configure.ac 59.1 KB
Newer Older
1
AC_PREREQ([2.69])
2

3
4
# The version is set in elpa.spec, to have a single point of reference
AC_INIT([elpa],m4_esyscmd_s([awk '/^ *Version:/ {print $2;}' elpa.spec]), [elpa-library@mpcdf.mpg.de])
5
AC_SUBST([PACKAGE_VERSION])
6

7
AC_CONFIG_SRCDIR([src/elpa.F90])
8
9

AM_INIT_AUTOMAKE([foreign -Wall subdir-objects])
10

11
12
13
14
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_HEADERS([config.h])
AM_SILENT_RULES([yes])

15
16
# ABI version
#
17
18
19
20
21
22
23
24
25
26
27
28
29
# Set the libtool library version, see LIBRARY_INTERFACE
#
# See http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
#
# [c:r:a]
#
# c: The currently implement interface
# r: The revision number of the current interface, that is the number
#    of released source-code changes for the current interface
# a: The "age" is the number of interfaces prior to c that are also supported
#    by the current interface, as they are ABI compatible (e.g. only new symbols
#    were added by the new interface)
#
30
AC_SUBST([ELPA_SO_VERSION], [14:0:0])
31

32
33
34
35
36
37
# AC_DEFINE_SUBST(NAME, VALUE, DESCRIPTION)
# -----------------------------------------
AC_DEFUN([AC_DEFINE_SUBST], [
AC_DEFINE([$1], [$2], [$3])
AC_SUBST([$1], ['$2'])
])
38
39
40

# API Version
AC_DEFINE([EARLIEST_API_VERSION], [20170403], [Earliest supported ELPA API version])
41

42
AC_DEFINE_SUBST(CURRENT_API_VERSION, 20190524, "Current ELPA API version")
Andreas Marek's avatar
Andreas Marek committed
43
44
# Autotune Version
AC_DEFINE([EARLIEST_AUTOTUNE_VERSION], [20171201], [Earliest ELPA API version, which supports autotuning])
45
46
AC_DEFINE([CURRENT_AUTOTUNE_VERSION], [20190524], [Current ELPA autotune version])
AC_DEFINE_SUBST(CURRENT_AUTOTUNE_VERSION, 20190524, "Current ELPA autotune version")
47

48
49
50
51
52
AX_CHECK_GNU_MAKE()
if test x$_cv_gnu_make_command = x ; then
        AC_MSG_ERROR([Need GNU Make])
fi

53
54
enable_legacy=no

Andreas Marek's avatar
Andreas Marek committed
55
56
AC_MSG_CHECKING(whether legacy interface should be provided)
AC_ARG_ENABLE([legacy-interface],
57
58
              AS_HELP_STRING([--enable-legacy-interface],
                             [build legacy API, default no]),
Andreas Marek's avatar
Andreas Marek committed
59
60
              [
	       if test x"$enableval" = x"yes"; then
61
	         enable_legacy=yes
Andreas Marek's avatar
Andreas Marek committed
62
63
64
65
	       else
	         enable_legacy=no
	       fi
	       ],
66
              [enable_legacy=no])
Andreas Marek's avatar
Andreas Marek committed
67
AC_MSG_RESULT([${enable_legacy}])
68
AM_CONDITIONAL([ENABLE_LEGACY],[test x"$enable_legacy" = x"yes"])
Andreas Marek's avatar
Andreas Marek committed
69
70
71
72
if test x"${enable_legacy}" = x"yes"; then
        AC_DEFINE([ENABLE_LEGACY], [1], [enable legacy interface])
fi

Andreas Marek's avatar
Andreas Marek committed
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
AC_MSG_CHECKING(whether in C interface the error argument should be optional)
AC_ARG_ENABLE([optional-argument-in-C-API],
              AS_HELP_STRING([--enable-optional-argument-in-C-API],
                             [do not build C API with error argument as optional, default no]),
              [
	       if test x"$enableval" = x"yes"; then
	         optional_c_error_argument=yes
	       else
	         optional_c_error_argument=no
	       fi
	       ],
              [optional_c_error_argument=no])
AC_MSG_RESULT([${optional_c_error_argument}])
AM_CONDITIONAL([OPTIONAL_C_ERROR_ARGUMENT],[test x"$enable_legacy" = x"yes"])
if test x"${optional_c_error_argument}" = x"yes"; then
        AC_DEFINE([OPTIONAL_C_ERROR_ARGUMENT], [1], [enable error argument in C-API to be optional])
fi

91
92
93
94
95

# gnu-make fortran module dependencies
m4_include([fdep/fortran_dependencies.m4])
FDEP_F90_GNU_MAKE_DEPS

96

97
dnl OpenMP
98
m4_include([m4/ax_elpa_openmp.m4])
99
100
AC_MSG_CHECKING(whether --enable-openmp is specified)
AC_ARG_ENABLE([openmp],
101
102
              AS_HELP_STRING([--enable-openmp],
                             [use OpenMP threading, default no.]),
Andreas Marek's avatar
Andreas Marek committed
103
104
105
106
107
108
109
              [
	       if test x"$enableval" = x"yes"; then
	         enable_openmp=yes
	       else
	         enable_openmp=no
	       fi
	       ],
110
              [enable_openmp=no])
111
112
113
AC_MSG_RESULT([${enable_openmp}])
AM_CONDITIONAL([WITH_OPENMP],[test x"$enable_openmp" = x"yes"])
if test x"${enable_openmp}" = x"yes"; then
114
        AC_DEFINE([WITH_OPENMP], [1], [use OpenMP threading])
115
116
fi

117

118
119
dnl mpi
AC_ARG_WITH(mpi, [AS_HELP_STRING([--with-mpi=[[yes|no]]], [compile with MPI. Default: yes])],,[with_mpi=yes])
120
AM_CONDITIONAL([WITH_MPI],[test x"$with_mpi" = x"yes"])
121
if test x"${with_mpi}" = x"yes"; then
122
  AC_DEFINE([WITH_MPI], [1], [use MPI])
123
124
fi

125
126
127
128
129
130

dnl Scalapack tests
AC_MSG_CHECKING(whether --enable-scalapack-tests is specified)
AC_ARG_ENABLE([scalapack-tests],
              AS_HELP_STRING([--enable-scalapack-tests],
                             [build SCALAPACK test cases for performance comparison, needs MPI, default no.]),
Andreas Marek's avatar
Andreas Marek committed
131
132
133
134
135
136
137
              [
	       if test x"$enableval" = x"yes"; then
	         enable_scalapack_tests=yes
	       else
	         enable_scalapack_tests=no
	       fi
	       ],
138
139
140
141
142
143
144
145
146
147
148
149
              [enable_scalapack_tests="no"])
AC_MSG_RESULT([$enable_scalapack_tests])
if test x"${enable_scalapack_tests}" = x"yes"; then
        if test x"$with_mpi" = x"no"; then
                AC_MSG_ERROR([You cannot build the SCALAPCK test cases without MPI])
        fi
        AC_DEFINE([WITH_SCALAPACK_TESTS], [1], [build SCALAPACK test cases])
fi
AM_CONDITIONAL([WITH_SCALAPACK_TESTS], [test x"$enable_scalapack_tests" = x"yes"])


dnl C
150
AC_LANG_PUSH([C])
151

152
153
154
155
156
157
AX_PROG_CC_MPI([test x"$with_mpi" = x"yes"],[found_mpi_c=yes],[found_mpi_c=no])
if test x"$with_mpi" = x"yes"; then
  if test x"$found_mpi_c" = x"no"; then
    AC_MSG_ERROR([Could not compile an MPI C program])
  fi
fi
158

159
if test x"${enable_openmp}" = x"yes"; then
160
161
162
163
164
  AX_ELPA_OPENMP
  if test "$ac_cv_prog_cc_openmp" = unsupported; then
    AC_MSG_ERROR([Could not compile a C program with OpenMP, adjust CFLAGS])
  fi
  CFLAGS="$OPENMP_CFLAGS $CFLAGS"
165
fi
166

Andreas Marek's avatar
Andreas Marek committed
167
168
169
c11_standard=no
AX_CHECK_COMPILE_FLAG([-std=gnu11], [
  c11_standard=yes
170
], [
Andreas Marek's avatar
Andreas Marek committed
171
172
  echo "C compiler cannot compile -std=gnu11 code"
  echo "testing -std=c11.."
173
])
Andreas Marek's avatar
Andreas Marek committed
174
if test x"$c11_standard" = x"yes"; then
Andreas Marek's avatar
Andreas Marek committed
175
176
177
  CFLAGS+=" -std=gnu11"
fi

Andreas Marek's avatar
Andreas Marek committed
178
if test x"$c11_standard" = x"no"; then
Andreas Marek's avatar
Andreas Marek committed
179
180
181
182
183
184
  AX_CHECK_COMPILE_FLAG([-std=c11], [
    c11_standard=yes
  ], [
    echo "C compiler cannot compile C11 code"
    exit -1
  ])
Andreas Marek's avatar
Andreas Marek committed
185
  if test x"$c11_standard" = x"yes"; then
Andreas Marek's avatar
Andreas Marek committed
186
187
188
    CFLAGS+=" -std=c11"
  fi
fi
189

190
191
AX_EXT

Andreas Marek's avatar
Andreas Marek committed
192
193
194
195
196
dnl heterogenous-cluster-support
AC_MSG_CHECKING(whether heterogenous-cluster-support should be enabled)
AC_ARG_ENABLE([heterogenous-cluster-support],
              AS_HELP_STRING([--heterogenous-cluster-support],
                             [allow ELPA to automatically switch to a kernel supported on all CPUs of a cluster (only works for Intel CPUs at the moment), default no. Activate only if necessary has a performance penalty! This feature is exerpimental!]),
197
198
              [
	       if test x"$enableval" = x"yes"; then
Andreas Marek's avatar
Andreas Marek committed
199
	         enable_heterogenous_cluster_support=yes
200
	       else
Andreas Marek's avatar
Andreas Marek committed
201
	         enable_heterogenous_cluster_support=no
202
203
	       fi
	       ],
Andreas Marek's avatar
Andreas Marek committed
204
205
206
207
              [enable_heterogenous_cluster_support="no"])
AC_MSG_RESULT([$enable_heterogenous_cluster_support])
if test x"${enable_heterogenous_cluster_support}" = x"yes"; then
  AC_DEFINE([HAVE_HETEROGENOUS_CLUSTER_SUPPORT], [1], [automatically support clusters with different Intel CPUs])
208
fi
Andreas Marek's avatar
Andreas Marek committed
209
AM_CONDITIONAL([HAVE_HETEROGENOUS_CLUSTER_SUPPORT],[test x"$enable_heterogenous_cluster_support" = x"yes"])
210

Andreas Marek's avatar
WIP    
Andreas Marek committed
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
dnl 64bit integer support for BLACS/LAPACK/SCALAPACK
AC_MSG_CHECKING(whether 64bit integers should be used for math libraries (BLAS/LAPACK/SCALAPACK))
AC_ARG_ENABLE([64bit-integer-support],
              AS_HELP_STRING([--64bit-integer-support],
                             [allows to link against the 64bit integer versions of the math libraries BLAS, LAPACK, and SCALAPACK]),
              [
	       if test x"$enableval" = x"yes"; then
	         enable_64bit_integer_support=yes
	       else
	         enable_64bit_integer_support=no
	       fi
	       ],
              [enable_64bit_integer_support="no"])
AC_MSG_RESULT([$enable_64bit_integer_support])
if test x"${enable_64bit_integer_support}" = x"yes"; then
  AC_DEFINE([HAVE_64BIT_INTEGER_SUPPORT], [1], [allow to link against the 64bit integer versions of math libraries])
fi
AM_CONDITIONAL([HAVE_64BIT_INTEGER_SUPPORT],[test x"$enable_64bit_integer_support" = x"yes"])






235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
AC_MSG_CHECKING(whether C compiler can use _Generic )
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
int main(int argc, char **argv) {
#define elpa_set(e, name, value, error) _Generic((value), \
                int: \
                  elpa_set_integer, \
                \
                double: \
                  elpa_set_double \
        )(e, name, value, error)

  return 0;
}
    ])],
    [can_compile_generic=yes],
    [can_compile_generic=no]
  )
AC_MSG_RESULT([${can_compile_generic}])
if test x"$can_compile_generic" != x"yes"; then
  AC_MSG_ERROR([C compiler cannot handle _Generic statement! Upgrade or change C compiler])
fi
AC_DEFINE([HAVE_VSX_SSE],[1],[Altivec VSX intrinsics are supported on this CPU])

258
AC_PROG_INSTALL
259
260
AM_PROG_AR
AM_PROG_AS
261
AC_PROG_CC_C99
262
AM_PROG_CC_C_O
263
AC_LANG_POP([C])
Andreas Marek's avatar
Andreas Marek committed
264
265

# Fortran
266
AC_LANG_PUSH([Fortran])
Andreas Marek's avatar
Andreas Marek committed
267
m4_include([m4/ax_prog_fc_mpi.m4])
268
269
270
271
272
273
AX_PROG_FC_MPI([test x"$with_mpi" = x"yes"],[found_mpi_f=yes],[found_mpi_f=no])
if test x"$with_mpi" = x"yes"; then
  if test x"$found_mpi_f" = x"no"; then
    AC_MSG_ERROR([Could not compile an MPI Fortran program])
  fi
fi
274

275
AC_FC_SRCEXT([F90])
276
277
278
279
280
AC_FC_FREEFORM
AC_FC_MODULE_FLAG
AC_FC_MODULE_OUTPUT_FLAG
AC_FC_LIBRARY_LDFLAGS

281

282
if test x"${enable_openmp}" = x"yes"; then
283
284
285
286
287
  AX_ELPA_OPENMP
  if test "$ac_cv_prog_fc_openmp" = unsupported; then
    AC_MSG_ERROR([Could not compile a Fortran program with OpenMP, adjust FCFLAGS])
  fi
  FCFLAGS="$OPENMP_FCFLAGS $FCFLAGS"
288
289
fi

290
291
dnl check which MPI binray invokes a MPI job
if test x"$with_mpi" = x"yes"; then
Andreas Marek's avatar
Andreas Marek committed
292
  AC_CHECK_PROGS([MPI_BINARY], [mpiexec.hydra mpiexec mpirun poe runjob srun aprun], [no])
293
  if test x"$MPI_BINARY" = x"no"; then
Andreas Marek's avatar
Andreas Marek committed
294
    AC_MSG_ERROR([Could not find either of the MPI binaries: mpiexec.hydra, mpiexec, mpirun, poe, runjob, srun, aprun])
295
296
297
  fi
fi

298
299
300
dnl build with the possibilty to redirect stdout and stderr
dnl per MPI task in a file
AC_MSG_CHECKING(whether stdout/stderr file redirect should be enabled)
301
AC_ARG_ENABLE([redirect],
302
303
              [AS_HELP_STRING([--enable-redirect],
                              [for test programs, allow redirection of stdout/stderr per MPI taks in a file (useful for timing), default no.])],
Andreas Marek's avatar
Andreas Marek committed
304
305
306
307
308
309
310
              [
               if test x"$enableval" = x"yes"; then
                 enable_redirect=yes
               else
                 enable_redirect=no
               fi
	       ],
311
              [enable_redirect=no])
312
313
AC_MSG_RESULT([${enable_redirect}])

314
315
316
317
318
319
320
321
322
323
dnl check whether single precision is requested
AC_MSG_CHECKING(whether ELPA library should contain also single precision functions)
AC_ARG_ENABLE(single-precision,
              [AS_HELP_STRING([--enable-single-precision],
                              [build with single precision])],
              [want_single_precision="$enableval"],
              [want_single_precision="no"])
AC_MSG_RESULT([${want_single_precision}])


324
325
dnl redirect
if test x"${enable_redirect}" = x"yes"; then
326
327
  AC_DEFINE([HAVE_REDIRECT], [1], [Redirect stdout and stderr of test programs per MPI tasks to a file])
fi
328
329
330
AM_CONDITIONAL([HAVE_REDIRECT],[test x"$enable_redirect" = x"yes"])

dnl build with ftimings support
331

Andreas Marek's avatar
Andreas Marek committed
332
AC_ARG_ENABLE([timings],
333
334
              [AS_HELP_STRING([--disable-timings],
                              [more detailed timing, default yes])],
Andreas Marek's avatar
Andreas Marek committed
335
336
337
338
339
340
341
              [
               if test x"$enableval" = x"yes"; then
                 enable_timings=yes
               else
                 enable_timings=no
               fi
	       ],
342
              [enable_timings=yes])
343
344
345
346

if test x"${enable_timings}" = x"yes"; then
  AC_DEFINE([HAVE_DETAILED_TIMINGS], [1], [Enable more timing])
fi
347
AM_CONDITIONAL([HAVE_DETAILED_TIMINGS], [test x"$enable_timings" = x"yes"])
348
349

dnl PAPI for ftimings
350
AC_LANG_PUSH([C])
351
AC_ARG_WITH([papi],
352
353
            [AS_HELP_STRING([--with-papi],
                            [Use PAPI to also measure flop count in the detailed timing (--enable-timing), disabled by default])],
Andreas Marek's avatar
Andreas Marek committed
354
355
356
357
358
359
360
            [
               if test x"$enableval" = x"yes"; then
                 with_papi=yes
               else
                 with_papi=no
               fi
	     ],
361
            [with_papi="no"])
362
363
if test x"${enable_timings}" = x"yes"; then
  if test x"$with_papi" = x"yes" ; then
364
    AC_SEARCH_LIBS([PAPI_library_init], [papi], [papi_found=yes], [papi_found=no])
365
366
    if test x"$papi_found" = x"no" ; then
      AC_MSG_ERROR(["Could not find usable PAPI installation, please install or adjust CFLAGS, LDFLAGS"])
367
368
369
370
    fi
    AC_DEFINE([HAVE_LIBPAPI], [1], [Use the PAPI library])
  fi
fi
371
AC_LANG_POP([C])
372

Pavel Kus's avatar
Pavel Kus committed
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
dnl Likwid
AC_LANG_PUSH([Fortran])
AC_ARG_WITH([likwid],
            [AS_HELP_STRING([--with-likwid=[[yes|no(default)|PATH]]],
                            [Use Likwid to measure performance in some parts of the library])],
            [with_likwid="$withval"],
            [with_likwid="no"])

if test x"$with_likwid" != x"no" ; then
  if test -d $with_likwid/lib ; then
    LDFLAGS="-L$with_likwid/lib $LDFLAGS"
  fi
  if test -d $with_likwid/lib64 ; then
    LDFLAGS="-L$with_likwid/lib64 $LDFLAGS"
  fi
  if test -d $with_likwid/include ; then
    FCFLAGS="-I$with_likwid/include $FCFLAGS"
  fi
  AC_SEARCH_LIBS([likwid_markerInit], [likwid], [liblikwid_found="yes"], [liblikwid_found="no"])
  if test x"$liblikwid_found" = x"no" ; then
    AC_MSG_ERROR([Could not find a usable likwid library, please adjust LDFLAGS])
  fi
  AC_MSG_CHECKING([whether we can use the likwid module in a Fortran program])
  AC_COMPILE_IFELSE([
       program foo
       use likwid

       implicit none

       call likwid_markerInit()
       call likwid_markerThreadInit()

       call likwid_markerStartRegion("foobar")
       call likwid_markerStopRegion("foobar")

       call likwid_markerClose()
       end
    ],
    [AC_MSG_RESULT([yes])],
    [AC_MSG_RESULT([no])
     AC_MSG_ERROR([Could not compile a Fortran program using the likwid module, adjust FCFLAGS])])
  AC_DEFINE([HAVE_LIKWID], [1], [Use likwid])
fi
AC_LANG_POP([Fortran])

418
419
420
save_FCFLAGS=$FCFLAGS
save_LDFLAGS=$LDFLAGS

421
422
423
AC_ARG_VAR([SCALAPACK_LDFLAGS],[Extra LDFLAGS necessary to link a program with Scalapack])
AC_ARG_VAR([SCALAPACK_FCFLAGS],[Extra FCFLAGS necessary to compile a Fortran program with Scalapack])

424
425
FCFLAGS="$FCFLAGS $SCALAPACK_FCFLAGS"
LDFLAGS="$LDFLAGS $SCALAPACK_LDFLAGS"
426

427
dnl check whether fortran error_unit is defined
428
AC_MSG_CHECKING([whether Fortran module iso_fortran_env is available])
429
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
430
  program test_error_unit
431
    use iso_fortran_env, only : error_unit
432
433
434
435
436
437
438
439
    implicit none

    write(error_unit,*) "error_unit is defined"
  end program
])],
  [can_use_iso_fortran_env=yes],
  [can_use_iso_fortran_env=no]
)
440
AC_MSG_RESULT([${can_use_iso_fortran_env}])
441
442
443
444
if test x"${can_use_iso_fortran_env}" = x"yes" ; then
 AC_DEFINE([HAVE_ISO_FORTRAN_ENV],[1],[can use module iso_fortran_env])
fi

445

446
447
dnl check whether one can link with specified MKL (desired method)
AC_MSG_CHECKING([whether we can compile a Fortran program using MKL])
448
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
449
  program test_mkl
450
    use mkl_service
451
452
453
454
455
456
457
458
459
460
461
462
    character*198 :: string
    call mkl_get_version_string(string)
    write(*,'(a)') string
  end program
])],
  [can_compile_with_mkl=yes],
  [can_compile_with_mkl=no]
)
AC_MSG_RESULT([${can_compile_with_mkl}])

if test x"$can_compile_with_mkl" = x"yes" ; then
  AC_MSG_CHECKING([whether we can link a Fortran program with MKL])
463
  AC_LINK_IFELSE([AC_LANG_SOURCE([
464
    program test_mkl
465
      use mkl_service
466
467
468
469
470
      character*198 :: string
      call mkl_get_version_string(string)
      write(*,'(a)') string
    end program
  ])],
Andreas Marek's avatar
Andreas Marek committed
471
472
    [have_mkl=yes],
    [have_mkl=no]
473
  )
Andreas Marek's avatar
Andreas Marek committed
474
  AC_MSG_RESULT([${have_mkl}])
475
476
477
fi

dnl if not mkl, check all the necessary individually
478
if test x"${have_mkl}" = x"yes" ; then
479
480
481
482
  WITH_MKL=1
else

  dnl first check blas
483
  AC_SEARCH_LIBS([dgemm],[openblas satlas blas],[have_blas=yes],[have_blas=no])
Andreas Marek's avatar
Andreas Marek committed
484
485
  AC_MSG_CHECKING([whether we can link a program with a blas lib])
  AC_MSG_RESULT([${have_blas}])
486

487
  if test x"${have_blas}" = x"no" ; then
488
    AC_MSG_ERROR([could not link with blas: specify path])
489
  fi
490
  dnl now lapack
Andreas Marek's avatar
Andreas Marek committed
491
492
493
  AC_SEARCH_LIBS([dlarrv],[lapack],[have_lapack=yes],[have_lapack=no])
  AC_MSG_CHECKING([whether we can link a program with a lapack lib])
  AC_MSG_RESULT([${have_lapack}])
494

495
  if test x"${have_lapack}" = x"no" ; then
496
    AC_MSG_ERROR([could not link with lapack: specify path])
497
  fi
Andreas Marek's avatar
Andreas Marek committed
498

499
  if test x"${with_mpi}" = x"yes"; then
500
    dnl test whether scalapack already contains blacs
501
    scalapack_libs="mpiscalapack scalapack scalapack-openmpi"
502
503
504
505
506
    old_LIBS="$LIBS"
    for lib in ${scalapack_libs}; do
      LIBS="-l${lib} ${old_LIBS}"
      AC_MSG_CHECKING([whether -l${lib} already contains a BLACS implementation])
      AC_LINK_IFELSE([AC_LANG_FUNC_LINK_TRY([blacs_gridinit])],[blacs_in_scalapack=yes],[blacs_in_scalapack=no])
Andreas Marek's avatar
Andreas Marek committed
507
	       
508
509
510
511
512
      AC_MSG_RESULT([${blacs_in_scalapack}])
      if test x"${blacs_in_scalapack}" = x"yes"; then
        break
      fi
    done
513

514
515
    if test x"${blacs_in_scalapack}" = x"no"; then
      LIBS="${old_LIBS}"
516

517
518
      dnl Test for stand-alone blacs
      AC_SEARCH_LIBS([bi_f77_init],[mpiblacsF77init],[],[],[-lmpiblacs])
519
520
521
522
523
524

      dnl for debian
      AC_SEARCH_LIBS([blacs_gridinit],[blacs-openmpi],[have_blacs=yes],[have_blacs=no],[-lblacsCinit-openmpi -lscalapack-openmpi])
      if test x"${have_blacs}" = x"no"; then
        unset ac_cv_search_blacs_gridinit
      fi
525
      AC_SEARCH_LIBS([blacs_gridinit],[mpiblacs blacs],[have_blacs=yes],[have_blacs=no])
Andreas Marek's avatar
Andreas Marek committed
526

527
528
529
      if test x"${have_blacs}" = x"no"; then
        AC_MSG_ERROR([No usable BLACS found. If installed in a non-standard place, please specify suitable LDFLAGS and FCFLAGS as arguments to configure])
      fi
530
    fi
531

532
    AC_SEARCH_LIBS([pdtran],[$scalapack_libs],[have_scalapack=yes],[have_scalapack=no])
Andreas Marek's avatar
Andreas Marek committed
533

534
535
536
    if test x"${have_scalapack}" = x"no" ; then
      AC_MSG_ERROR([could not link with scalapack: specify path])
    fi
537
538
539
540
  fi

  dnl check whether we can link alltogehter
  AC_MSG_CHECKING([whether we can link a Fortran program with all blacs/scalapack])
541
  AC_LINK_IFELSE([AC_LANG_SOURCE([
542
543
    program dgemm_test

544
545
      integer , parameter:: M = 4, N = 3, K = 2
      real :: A(M,K), B(K,N), C(M,N)
546

547
      call dgemm('N','N',M,N,K,1.0,A,M,B,K,0.0,C,M)
548
549
550
551
552
553
554
555

     end program dgemm_test
     ])],
     [can_link_with_blacs_scalapack=yes],
     [can_link_with_blacs_scalapack=no]
   )
   AC_MSG_RESULT([${can_link_with_blacs_scalapack}])

556
   if test x"${can_link_with_blacs_scalapack}" = x"yes" ; then
557
558
     WITH_BLACS=1
   else
559
   AC_MSG_ERROR([We can neither link with MKL or another Scalpack. Please specify SCALAPACK_LDFLAGS and SCALAPACK_FCFLAGS!])
560
561
562
   fi
fi

563
564
565
566
dnl important: reset them again!
FCFLAGS=$save_FCFLAGS
LDFLAGS=$save_LDFLAGS

567

Andreas Marek's avatar
Andreas Marek committed
568
569
570
571
dnl check for intrinsic fortran function of 2003 standard
AC_MSG_CHECKING([whether we can use the intrinsic Fortran function "get_environment_variable"])


572
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
Andreas Marek's avatar
Andreas Marek committed
573
574
575
576
577
578
579
580
581
  program test_get_environment
    character(len=256) :: homedir
    call get_environment_variable("HOME",homedir)
  end program
])],
  [fortran_can_check_environment=yes],
  [fortran_can_check_environment=no]
)
AC_MSG_RESULT([${fortran_can_check_environment}])
582
583
584
if test x"${fortran_can_check_environment}" = x"yes" ; then
 AC_DEFINE([HAVE_ENVIRONMENT_CHECKING],[1],[Fortran can query environment variables])
fi
Andreas Marek's avatar
Andreas Marek committed
585

586

587
588
dnl check whether BAND_TO_FULL_BLOCKING is set
AC_MSG_CHECKING(whether BAND_TO_FLULL_BLOCKING is requested)
589
AC_ARG_ENABLE(band-to-full-blocking,[AS_HELP_STRING([--disable-band-to-full-blocking],
590
                                                    [build ELPA2 with blocking in band_to_full (default: enabled)])],
Andreas Marek's avatar
Andreas Marek committed
591
592
593
594
595
596
597
              [
               if test x"$enableval" = x"yes"; then
                 enable_band_to_full_blocking=yes
               else
                 enable_band_to_full_blocking=no
               fi
	       ],
598
599
	      [enable_band_to_full_blocking="yes"])
AC_MSG_RESULT([${enable_band_to_full_blocking}])
600

601
602
AM_CONDITIONAL([BAND_TO_FULL_BLOCKING],[test x"$enable_band_to_full_blocking" = x"yes"])
if test x"${enable_band_to_full_blocking}" = x"yes"; then
603
       AC_DEFINE([BAND_TO_FULL_BLOCKING], [1], [use blocking in trans_ev_band_to_full])
604
605
fi

606
607
608
609
610
611
612

AC_ARG_WITH([cuda-path],[AS_HELP_STRING([--with-cuda-path=PATH],[prefix where CUDA is installed @<:@default=auto@:>@])],
            [CUDA_INSTALL_PATH=$withval], [with_cuda=auto])

AC_ARG_WITH([cuda-sdk-path],[AS_HELP_STRING([--with-cuda-sdk-path=PATH],[prefix where CUDA SDK is installed @<:@default=auto@:>@])],
            [CUDA_SDK_INSTALL_PATH=$withval],[with_cuda_sdk=auto])

613

614
dnl setup nvcc flags and use them in later tests
615
616
617
user_sets_gpu_compute_capability="no"
AC_MSG_CHECKING(whether a GPU compute capability is specified)
AC_ARG_WITH([GPU-compute-capability],
618
619
620
            [AS_HELP_STRING([--with-GPU-compute-capability=VALUE],
                            [use compute capability VALUE for GPU version, default: "sm_35"])],
            [user_sets_gpu_compute_capability="yes"],[cuda_compute_capability="sm_35"])
621
622
AC_MSG_RESULT([${user_sets_gpu_compute_capability}])

623

624
625
626
627
628
629
630
631
632
633
634
dnl sanity check whether compute capability setting by user is reasonable
if test x"${user_sets_gpu_compute_capability}" = x"yes" ; then
  dnl the user must set a value which starts with "sm_"
  value=$(echo $withval | cut -c1-3)
  if test x"${value}" = x"sm_" ; then
    cuda_compute_capability=$withval
  else
    AC_MSG_ERROR([Unknown GPU compute capability set: ${withval}])
  fi
fi

Andreas Marek's avatar
Andreas Marek committed
635

636
637
dnl Test possibility of 'use mpi', if requested
if test x"${with_mpi}" = x"yes" ; then
638
639
  AC_ARG_ENABLE([mpi-module],
                AS_HELP_STRING([--disable-mpi-module],
Pavel Kus's avatar
Pavel Kus committed
640
                               [do not use the Fortran MPI module, get interfaces by 'include "mpif.h']),
Andreas Marek's avatar
Andreas Marek committed
641
642
643
644
645
646
647
                [
                 if test x"$enableval" = x"yes"; then
                   enable_mpi_module=yes
                 else
                   enable_mpi_module=no
                 fi
		 ],
648
649
                [enable_mpi_module=yes])
  if test x"${enable_mpi_module}" = x"yes" ; then
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
    AC_MSG_CHECKING(whether Fortran mpi module can be used)
    AC_COMPILE_IFELSE([AC_LANG_SOURCE([
      program test_mpi_module
        use mpi
        real :: time
        time = MPI_WTime()
      end program
    ])],
      [can_use_fortran_mpi_module=yes],
      [can_use_fortran_mpi_module=no]
    )
    AC_MSG_RESULT([${can_use_fortran_mpi_module}])
    if test x"${can_use_fortran_mpi_module}" = x"yes" ; then
      AC_DEFINE([HAVE_MPI_MODULE],[1],[can use the Fortran mpi module])
    else
665
      AC_MSG_ERROR([Could not compile a Fortran program with an 'use mpi' statement. You can try again with --disable-mpi-module])
666
    fi
667
  fi
Andreas Marek's avatar
Andreas Marek committed
668
fi
669
AC_LANG_POP([Fortran])
Andreas Marek's avatar
Andreas Marek committed
670

671
672
dnl Assemble the list of kernels to build
m4_pattern_forbid([elpa_m4])
Andreas Marek's avatar
Andreas Marek committed
673

674
675
676
m4_define(elpa_m4_generic_kernels, [
        real_generic
        real_generic_simple
Andreas Marek's avatar
Andreas Marek committed
677
        real_generic_simple_block4
678
        real_generic_simple_block6
679
680
681
        complex_generic
        complex_generic_simple
])
682

683
684
685
686
m4_define(elpa_m4_sse_assembly_kernels, [
        real_sse_assembly
        complex_sse_assembly
])
687

688
689
690
691
692
693
694
m4_define(elpa_m4_sse_kernels, [
        real_sse_block2
        real_sse_block4
        real_sse_block6
        complex_sse_block1
        complex_sse_block2
])
695

696
697
698
699
700
701
m4_define(elpa_m4_sparc64_kernels, [
        real_sparc64_block2
        real_sparc64_block4
        real_sparc64_block6
])

702
703
704
705
706
707
m4_define(elpa_m4_neon_arch64_kernels, [
        real_neon_arch64_block2
        real_neon_arch64_block4
        real_neon_arch64_block6
])

708
709
710
711
712
713
m4_define(elpa_m4_vsx_kernels, [
        real_vsx_block2
        real_vsx_block4
        real_vsx_block6
])

714
715
716
717
718
719
720
m4_define(elpa_m4_avx_kernels, [
        real_avx_block2
        real_avx_block4
        real_avx_block6
        complex_avx_block1
        complex_avx_block2
])
Andreas Marek's avatar
Andreas Marek committed
721

722
723
724
725
726
727
728
m4_define(elpa_m4_avx2_kernels, [
        real_avx2_block2
        real_avx2_block4
        real_avx2_block6
        complex_avx2_block1
        complex_avx2_block2
])
Andreas Marek's avatar
Andreas Marek committed
729

730
731
732
733
734
735
736
m4_define(elpa_m4_avx512_kernels, [
        real_avx512_block2
        real_avx512_block4
        real_avx512_block6
        complex_avx512_block1
        complex_avx512_block2
])
Andreas Marek's avatar
Andreas Marek committed
737

738
739
740
741
m4_define(elpa_m4_bgp_kernels, [
        real_bgp
        complex_bgp
])
Andreas Marek's avatar
Andreas Marek committed
742

743
744
745
746
m4_define(elpa_m4_bgq_kernels, [
        real_bgq
        complex_bgq
])
Andreas Marek's avatar
Andreas Marek committed
747

748
m4_define(elpa_m4_gpu_kernels, [
749
750
        real_gpu
        complex_gpu
751
])
752

753
m4_define(elpa_m4_kernel_types, [generic sparc64 neon_arch64 vsx sse sse_assembly avx avx2 avx512 bgp bgq gpu])
754

755
756
757
758
m4_define(elpa_m4_all_kernels,
          m4_foreach_w([elpa_m4_type],
                       elpa_m4_kernel_types,
                       [m4_foreach_w([elpa_m4_kernel],[elpa_m4_]elpa_m4_type[_kernels],elpa_m4_kernel )]))
Andreas Marek's avatar
Andreas Marek committed
759

760
761
762
763
m4_define(elpa_m4_real_kernels,
          m4_foreach_w(elpa_m4_kernel,
                       elpa_m4_all_kernels,
                       [m4_bmatch(elpa_m4_kernel,real,elpa_m4_kernel) ]))
Andreas Marek's avatar
Andreas Marek committed
764

765
766
767
768
m4_define(elpa_m4_complex_kernels,
          m4_foreach_w(elpa_m4_kernel,
                       elpa_m4_all_kernels,
                       [m4_bmatch(elpa_m4_kernel,complex,elpa_m4_kernel) ]))
769

770
771
772
773
774
775
776
777
778
779
780
781
782
dnl
dnl ELPA_SELECT_KERNELS([flagname],[default])
dnl
dnl  default should be one of `enable' or `disable'
dnl
AC_DEFUN([ELPA_SELECT_KERNELS], [
        AC_ARG_ENABLE(m4_bpatsubst($1,[_],[-]),[AS_HELP_STRING([--]m4_case([$2],[enable],[disable],[disable],[enable])[-]m4_bpatsubst($1,[_],[-]),
                m4_case([$2],[enable],[do not build],[disable],[build])[ ]m4_toupper($1)[ kernels, default: $2d])],
                      [],[enable_$1=]m4_case([$2],[enable],[yes],[disable],[no]))
        m4_foreach_w(elpa_m4_kernel,elpa_m4_$1_kernels,[
                use_[]elpa_m4_kernel[=$enable_$1]
        ])
])
783

784
785
dnl Modify list of kernels with configure arguments
ELPA_SELECT_KERNELS([generic],[enable])
786
ELPA_SELECT_KERNELS([sparc64],[disable])
787
ELPA_SELECT_KERNELS([neon_arch64],[disable])
788
ELPA_SELECT_KERNELS([vsx],[disable])
789
790
791
792
ELPA_SELECT_KERNELS([sse],[enable])
ELPA_SELECT_KERNELS([sse_assembly],[enable])
ELPA_SELECT_KERNELS([avx],[enable])
ELPA_SELECT_KERNELS([avx2],[enable])
793
ELPA_SELECT_KERNELS([avx512],[enable])
794
795
796
797
798
799
800
ELPA_SELECT_KERNELS([gpu],[disable])
ELPA_SELECT_KERNELS([bgp],[disable])
ELPA_SELECT_KERNELS([bgq],[disable])

m4_foreach_w([elpa_m4_kind],[real complex],[
        default_[]elpa_m4_kind[]_kernel=""
])
801

802
if test x"${enable_bgp}" = x"yes" -o x"$enable_bgq" = x"yes"; then
803
        m4_foreach_w([elpa_m4_kernel], elpa_m4_sparc64_kernels elpa_m4_neon_arch64_kernels elpa_m4_vsx_kernels elpa_m4_sse_kernels elpa_m4_avx_kernels elpa_m4_avx2_kernels elpa_m4_avx512_kernels, [
804
805
806
807
808
809
810
811
812
813
814
815
                if x"$use_[]elpa_m4_kernel[]" = x"yes" ; then
                        echo "Disabling elpa_m4_kernel due to BGP/BGQ option"
                fi
                use_[]elpa_m4_kernel[]=no
        ])
fi


dnl Deal with --with-fixed-[real|complex]-kernel arguments
m4_foreach_w([elpa_m4_kind],[real complex],[
        AC_ARG_WITH([fixed-]elpa_m4_kind[-kernel], m4_expand([AS_HELP_STRING([--with-fixed-]elpa_m4_kind[-kernel]=KERNEL,
                [compile with only a single specific ]elpa_m4_kind[ kernel. Available kernels are:]
816
817
                 m4_foreach_w([elpa_m4_kernel],m4_expand(elpa_m4_[]elpa_m4_kind[]_kernels),[m4_bpatsubst(elpa_m4_kernel,elpa_m4_kind[]_,[]) ]))]),
                 [fixed_]elpa_m4_kind[_kernel="]elpa_m4_kind[_$withval"],[fixed_]elpa_m4_kind[_kernel=""])
818
        if test -n "$fixed_[]elpa_m4_kind[]_kernel" ; then
819
                found="no"
820
821
822
                m4_foreach_w([elpa_m4_otherkernel],m4_expand(elpa_m4_[]elpa_m4_kind[]_kernels),[
                        if test "$fixed_]elpa_m4_kind[_kernel" = "]elpa_m4_otherkernel[" ; then
                                use_[]elpa_m4_otherkernel[]=yes
823
                                found="yes"
824
825
826
827
                        else
                                use_[]elpa_m4_otherkernel[]=no
                        fi
                ])
828
829
830
                if test x"$found" = x"no" ; then
                        AC_MSG_ERROR([Invalid kernel "$fixed_]elpa_m4_kind[_kernel" specified for --with-fixed-]elpa_m4_kind[-kernel])
                fi
831
832
833
834
                default_[]elpa_m4_kind[]_kernel="$fixed_[]elpa_m4_kind[]_kernel"
                AC_DEFINE([WITH_FIXED_]m4_toupper(elpa_m4_kind)[_KERNEL],[1],[use only one specific ]elpa_m4_kind[ kernel (set at compile time)])
        fi
])
835

836
837
838
839
840
841
842
AC_ARG_WITH(gpu-support-only, [AS_HELP_STRING([--with-gpu-support-only],
            [Compile and always use the GPU version])],
            [],[with_gpu_support_only=no])
if test x"$with_gpu_support_only" = x"yes" ; then
        m4_foreach_w([elpa_m4_kernel],elpa_m4_all_kernels,[
                      use_[]elpa_m4_kernel[]=no
        ])
843
844
        use_real_gpu=yes
        use_complex_gpu=yes
845
fi
846

847

848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
dnl
dnl  ELPA_KERNEL_DEPENDS([kernel],[other kernels])
dnl
dnl   Switch on each of the other kernels if the given kernel is selected
dnl
AC_DEFUN([ELPA_KERNEL_DEPENDS],[
          if test x"$use_$1" = x"yes"; then
                  m4_foreach_w([elpa_m4_requiredkernel],[$2],[
                               if test x"$use_[]elpa_m4_requiredkernel[]" = x"no" ; then
                                       echo "Enabling elpa_m4_requiredkernel kernel, is a prerequisite for $1"
                               fi
                               use_[]elpa_m4_requiredkernel[]=yes
                  ])
          fi
])
863
m4_foreach_w([elpa_m4_arch],[sparc64 neon_arch64 vsx sse avx avx2 avx512],[
864
865
866
867
        ELPA_KERNEL_DEPENDS([real_]elpa_m4_arch[_block6], [real_]elpa_m4_arch[_block4 real_]elpa_m4_arch[_block2])
        ELPA_KERNEL_DEPENDS([real_]elpa_m4_arch[_block4], [real_]elpa_m4_arch[_block2])
        ELPA_KERNEL_DEPENDS([complex_]elpa_m4_arch[_block2], [complex_]elpa_m4_arch[_block1])
])
868

869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
m4_foreach_w([elpa_m4_type],elpa_m4_kernel_types,[
        need_[]elpa_m4_type=no
        need_[]elpa_m4_type[]_kernels=""
        m4_foreach_w([elpa_m4_kernel],m4_expand([elpa_m4_]elpa_m4_type[_kernels]),[
                if test x"$use_[]elpa_m4_kernel" = x"yes" ; then
                        need_[]elpa_m4_type=yes
                        need_[]elpa_m4_type[]_kernels="$need_[]elpa_m4_type[]_kernels elpa_m4_kernel"
                fi
        ])
])
m4_foreach_w([elpa_m4_type],elpa_m4_kernel_types,[
        if test x"$need_[]elpa_m4_type[]" = x"yes" ; then
               echo "Using m4_toupper(elpa_m4_type) for kernels$need_[]elpa_m4_type[]_kernels"
        fi
])
m4_foreach_w([elpa_m4_type],elpa_m4_kernel_types,[
        if test x"$need_[]elpa_m4_type[]" != x"yes" ; then
               echo "Not using m4_toupper(elpa_m4_type) as no selected kernel needs it"
        fi
])
889

890

891
892
893
dnl the list of kernels is now assembled
dnl choosing a default kernel

894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
m4_foreach_w([elpa_m4_kind],[real complex],[
        AC_ARG_WITH([default-]elpa_m4_kind[-kernel], m4_expand([AS_HELP_STRING([--with-default-]elpa_m4_kind[-kernel]=KERNEL,
                [set a specific ]elpa_m4_kind[ kernel as default kernel. Available kernels are:]
                 m4_foreach_w([elpa_m4_kernel],m4_expand(elpa_m4_[]elpa_m4_kind[]_kernels),[m4_bpatsubst(elpa_m4_kernel,elpa_m4_kind[]_,[]) ]))]),
                 [default_]elpa_m4_kind[_kernel="]elpa_m4_kind[_$withval"],[default_]elpa_m4_kind[_kernel=""])
        #if test -n "$default_[]elpa_m4_kind[]_kernel" ; then
        #        found="no"
        #        m4_foreach_w([elpa_m4_otherkernel],m4_expand(elpa_m4_[]elpa_m4_kind[]_kernels),[
        #                if test "$default_]elpa_m4_kind[_kernel" = "]elpa_m4_otherkernel[" ; then
        #                        use_[]elpa_m4_otherkernel[]=yes
        #                        found="yes"
        #                else
        #                        use_[]elpa_m4_otherkernel[]=no
        #                fi
        #        ])
        #        if test x"$found" = x"no" ; then
        #                AC_MSG_ERROR([Invalid kernel "$default_]elpa_m4_kind[_kernel" specified for --with-default-]elpa_m4_kind[-kernel])
        #        fi
        #        AC_DEFINE([WITH_DEFAULT_]m4_toupper(elpa_m4_kind)[_KERNEL],[1],[use specific ]elpa_m4_kind[ default kernel (set at compile time)])
        #fi
])



918
919
920
m4_foreach_w([elpa_m4_kind],[real complex],[
        m4_foreach_w([elpa_m4_kernel],
                     m4_foreach_w([elpa_m4_cand_kernel],
921
                                  elpa_m4_avx512_kernels elpa_m4_avx2_kernels elpa_m4_avx_kernels elpa_m4_sse_kernels elpa_m4_sse_assembly_kernels elpa_m4_sparc64_kernels elpa_m4_neon_arch64_kernels elpa_m4_vsx_kernels elpa_m4_generic_kernels,
922
923
924
925
926
927
928
929
930
931
932
933
934
                                  [m4_bmatch(elpa_m4_cand_kernel,elpa_m4_kind,elpa_m4_cand_kernel)] ),
                     [
                     if test -z "$default_[]elpa_m4_kind[]_kernel"; then
                             if test x"$use_[]elpa_m4_kernel" = x"yes"; then
                                     default_[]elpa_m4_kind[]_kernel="elpa_m4_kernel"
                             fi
                     fi
                     ])
        if test -z "$default_[]elpa_m4_kind[]_kernel"; then
                AC_MSG_ERROR([Internal error, could not determine a default kernel])
        fi
        # find the number of this kernel
        ELPA_2STAGE_[]m4_toupper(elpa_m4_kind)[]_DEFAULT=`grep -i '^ *X(ELPA_2STAGE_'$default_[]elpa_m4_kind[]_kernel'\>' $srcdir/elpa/elpa_constants.h.in | \
935
                                                                perl -pe 's/^[[^,]]*, *//; s/,.*//;'`
936
937
        AC_SUBST([ELPA_2STAGE_]m4_toupper(elpa_m4_kind)[_DEFAULT])
])
Andreas Marek's avatar
Andreas Marek committed
938

939
940
941
942
943
944
945
dnl #include <fjmfunc.h>
dnl #include <emmintrin.h>
dnl int main(int argc, char **argv) {
dnl   __m128d q;
dnl   __m128d h1 = _fjsp_neg_v2r8(q);
dnl   return 0;
dnl }
946
AC_LANG_PUSH([C])
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967

if test x"${need_vsx}" = x"yes"; then
  AC_MSG_CHECKING(whether we can compile Altivec VSX with intrinsics in C)
  AC_COMPILE_IFELSE([AC_LANG_SOURCE([
#include <altivec.h>
int main(int argc, char **argv) {
  __vector double a, b, c;
  c = vec_add(a,b);
  return 0;
}
    ])],
    [can_compile_vsx=yes],
    [can_compile_vsx=no]
  )
  AC_MSG_RESULT([${can_compile_vsx}])
  if test x"$can_compile_vsx" != x"yes"; then
    AC_MSG_ERROR([Could not compile test program, try with --disable-vsx, or adjust the C compiler or CFLAGS])
  fi
  AC_DEFINE([HAVE_VSX_SSE],[1],[Altivec VSX intrinsics are supported on this CPU])
fi

968
969
970
if test x"${need_sparc64}" = x"yes"; then
  AC_MSG_CHECKING(whether we can compile SPARC64 with intrinsics in C)
  AC_COMPILE_IFELSE([AC_LANG_SOURCE([
Andreas Marek's avatar
Andreas Marek committed
971
972
#include <fjmfunc.h>
#include <emmintrin.h>
973
int main(int argc, char **argv) {
Andreas Marek's avatar
Andreas Marek committed
974
975
  __m128d  tau1;
  __m128d h1 = _fjsp_neg_v2r8(tau1);
976
977
978
979
980
981
982
983
984
985
986
987
  return 0;
}
    ])],
    [can_compile_sparc64=yes],
    [can_compile_sparc64=no]
  )
  AC_MSG_RESULT([${can_compile_sparc64}])
  if test x"$can_compile_sparc64" != x"yes"; then
    AC_MSG_ERROR([Could not compile test program, try with --disable-sparc64, or adjust the C compiler or CFLAGS])
  fi
  AC_DEFINE([HAVE_SPARC64_SSE],[1],[SPARC64 intrinsics are supported on this CPU])
fi
Andreas Marek's avatar
Andreas Marek committed
988

989
990
991
992
993
994
if test x"${need_neon_arch64}" = x"yes"; then
  AC_MSG_CHECKING(whether we can compile NEON ARCH64 with intrinsics in C)
  AC_COMPILE_IFELSE([AC_LANG_SOURCE([
#include <arm_neon.h>
int main(int argc, char **argv) {
  __Float64x2_t  x1, x2, x3, x4;
Andreas Marek's avatar
Andreas Marek committed
995
  x4 = vfmaq_f64(x1, x2, x3);
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
  return 0;
}
    ])],
    [can_compile_neon_arch64=yes],
    [can_compile_neon_arch64=no]
  )
  AC_MSG_RESULT([${can_compile_neon_arch64}])
  if test x"$can_compile_neon_arch64" != x"yes"; then
    AC_MSG_ERROR([Could not compile test program, try with --disable-neon_arch64, or adjust the C compiler or CFLAGS])
  fi
  AC_DEFINE([HAVE_NEON_ARCH64_SSE],[1],[NEON_ARCH64 intrinsics are supported on this CPU])
fi


1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
if test x"${need_sse}" = x"yes"; then
  AC_MSG_CHECKING(whether we can compile SSE3 with gcc intrinsics in C)
  AC_COMPILE_IFELSE([AC_LANG_SOURCE([
#include <x86intrin.h>
int main(int argc, char **argv) {
  double* q;
  __m128d h1 = _mm_loaddup_pd(q);
  return 0;
}
    ])],
    [can_compile_sse=yes],
    [can_compile_sse=no]
  )
  AC_MSG_RESULT([${can_compile_sse}])
  if test x"$can_compile_sse" != x"yes"; then
    AC_MSG_ERROR([Could not compile test program, try with --disable-sse, or adjust the C compiler or CFLAGS])
  fi
  AC_DEFINE([HAVE_SSE_INTRINSICS],[1],[gcc intrinsics SSE is supported on this CPU])
Andreas Marek's avatar
Andreas Marek committed
1028
1029
1030
fi


1031
1032
if test x"${need_sse_assembly}" = x"yes"; then
  AC_MSG_CHECKING(whether double-precision SSE assembly kernels can be compiled)
Andreas Marek's avatar
Andreas Marek committed
1033

Andreas Marek's avatar
Andreas Marek committed
1034
  $CC $CFLAGS -c $srcdir/src/elpa2/kernels/asm_x86_64_double_precision.s -o conftest.o 2>&5
Andreas Marek's avatar
Andreas Marek committed
1035

1036
1037
1038
1039
1040
1041
1042
1043
  if test "$?" == 0; then
    can_compile_sse_asm_double=yes
  else
    can_compile_sse_asm_double=no
  fi
  rm -f ./conftest.o
  AC_MSG_RESULT([${can_compile_sse_asm_double}])
  if test x"$can_compile_sse_asm_double" != x"yes"; then
1044
    AC_MSG_ERROR([Could not compile test program, try with --disable-sse-assembly, or adjust the C compiler or CFLAGS. Possibly (some of) the flags " $SIMD_FLAGS " solve this issue])
1045
  fi
1046

1047
1048
  if test x"${want_single_precision}" = x"yes" ; then
    AC_MSG_CHECKING(whether single-precision SSE assembly kernels can be compiled)
1049

Andreas Marek's avatar
Andreas Marek committed
1050
    $CC $CFLAGS -c $srcdir/src/elpa2/kernels/asm_x86_64_single_precision.s -o conftest.o 2>&5
1051

1052
1053
1054
1055
1056
1057
1058
1059
    if test "$?" == 0; then
      can_compile_sse_asm_single=yes
    else
      can_compile_sse_asm_single=no
    fi
    rm -f ./conftest.o
    AC_MSG_RESULT([${can_compile_sse_asm_single}])
    if test x"$can_compile_sse_asm_single" != x"yes"; then
1060
      AC_MSG_ERROR([Could not compile test program, try with --disable-sse-assembly, or adjust the C compiler or CFLAGS. Possibly (some of) the flags " $SIMD_FLAGS " solve this issue])
1061
1062
    fi
  fi
Andreas Marek's avatar
Andreas Marek committed
1063
1064
1065
1066
fi



1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
if test x"${need_avx}" = x"yes"; then
  dnl check whether one can compile AVX gcc intrinsics
  AC_MSG_CHECKING([whether we can compile AVX gcc intrinsics in C])
  AC_COMPILE_IFELSE([AC_LANG_SOURCE([
   #include <x86intrin.h>
   int main(int argc, char **argv){
   double* q;
   __m256d a1_1 = _mm256_load_pd(q);
   return 0;
   }
   ])],
   [can_compile_avx=yes],
   [can_compile_avx=no]
  )
  AC_MSG_RESULT([${can_compile_avx}])
  if test x"$can_compile_avx" != x"yes"; then
1083
    AC_MSG_ERROR([Could not compile a test program with AVX, try with --disable-avx, or adjust the C compiler or CFLAGS. Possibly (some of) the flags " $SIMD_FLAGS " solve this issue])
1084
1085
  fi
  AC_DEFINE([HAVE_AVX],[1],[AVX is supported on this CPU])
1086
1087
1088
fi


1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
if test x"${need_avx2}" = x"yes"; then
  AC_MSG_CHECKING([whether we can compile AVX2 gcc intrinsics in C])
  AC_COMPILE_IFELSE([AC_LANG_SOURCE([
   #include <x86intrin.h>
   int main(int argc, char **argv){
   double* q;
   __m256d q1 = _mm256_load_pd(q);
   __m256d y1 = _mm256_fmadd_pd(q1, q1, q1);
   return 0;
   }
   ])],
   [can_compile_avx2=yes],
   [can_compile_avx2=no]
  )
  AC_MSG_RESULT([${can_compile_avx2}])
  if test x"$can_compile_avx2" != x"yes"; then
1105
    AC_MSG_ERROR([Could not compile a test program with AVX2, try with --disable-avx2, or adjust the C compiler or CFLAGS.  Possibly (some of) the flags " $SIMD_FLAGS " solve this issue])
1106
1107
  fi
  AC_DEFINE([HAVE_AVX2],[1],[AVX2 is supported on this CPU])
1108
1109
fi

1110

1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
if test x"${need_avx512}" = x"yes"; then
  AC_MSG_CHECKING([whether we can compile AVX512 gcc intrinsics in C])
  AC_COMPILE_IFELSE([AC_LANG_SOURCE([
   #include <x86intrin.h>
   int main(int argc, char **argv){
   double* q;
   __m512d q1 = _mm512_load_pd(q);
   __m512d y1 = _mm512_fmadd_pd(q1, q1, q1);
   return 0;
   }
   ])],
   [can_compile_avx512=yes],
   [can_compile_avx512=no]
  )
  AC_MSG_RESULT([${can_compile_avx512}])
  if test x"$can_compile_avx512" != x"yes"; then
1127
    AC_MSG_ERROR([Could not compile a test program with AVX512, adjust the C compiler or CFLAGS. Possibly (some of) the flags " $SIMD_FLAGS " solve this issue])
1128
1129
  fi
  AC_DEFINE([HAVE_AVX512],[1],[AVX512 is supported on this CPU])
Andreas Marek's avatar
Andreas Marek committed
1130
1131

  if test x"$can_compile_avx512" = x"yes"; then
1132
    AC_MSG_CHECKING([whether we compile for Xeon])
1133
    AC_COMPILE_IFELSE([AC_LANG_SOURCE([
Andreas Marek's avatar
Andreas Marek committed
1134
1135
1136
     #include <x86intrin.h>
     int main(int argc, char **argv){
     __m512d sign;
1137
     __m512d h1_real;
Andreas Marek's avatar
Andreas Marek committed
1138
1139
1140
1141
1142
1143
1144
1145

     __m512d x1 = _mm512_xor_pd(h1_real, sign);
     return 0;
     }
     ])],
     [can_compile_avx512_xeon=yes],
     [can_compile_avx512_xeon=no]
    )
1146
1147
1148
    AC_MSG_RESULT([${can_compile_avx512_xeon}])

    AC_MSG_CHECKING([whether we compile for Xeon PHI])
1149
    AC_COMPILE_IFELSE([AC_LANG_SOURCE([
Andreas Marek's avatar
Andreas Marek committed
1150
1151
1152
1153
     #include <x86intrin.h>
     int main(int argc, char **argv){
     __m512d sign;
     __m512d h1;
Andreas Marek's avatar
Andreas Marek committed
1154
     __m512d h2_real;
Andreas Marek's avatar
Andreas Marek committed
1155

1156
     __m512d x1 = (__m512d) _mm512_xor_epi64((__m512i) h2_real, (__m512i) sign);
Andreas Marek's avatar
Andreas Marek committed
1157
1158
1159
1160
1161
1162
     return 0;
     }
     ])],
     [can_compile_avx512_xeon_phi=yes],
     [can_compile_avx512_xeon_phi=no]
    )
1163
1164
    AC_MSG_RESULT([${can_compile_avx512_xeon_phi}])

1165
1166
1167
1168
1169
1170
    # this is needed for the intel compiler
    if test x"$can_compile_avx512_xeon" = x"yes" ; then
      if test x"$can_compile_avx512_xeon_phi" = x"yes" ; then
        # we want only one to be true; this is ugly but could not come up with a better way
        grep Phi /proc/cpuinfo > /dev/null
        if test x"$?" = x"0" ; then
1171
	  echo "Xeon PHI found ... disabling AVX512 Xeon"
1172
1173
1174
1175
1176
          can_compile_avx512_xeon=no
        fi
      fi
    fi

Andreas Marek's avatar
Andreas Marek committed
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
    if test x"$can_compile_avx512_xeon" = x"yes"; then
      AC_DEFINE([HAVE_AVX512_XEON],[1],[AVX512 for Xeon is supported on this CPU])
    else
      if test x"$can_compile_avx512_xeon_phi" = x"yes"; then
        AC_DEFINE([HAVE_AVX512_XEON_PHI],[1],[AVX512 for Xeon-PHI is supported on this CPU])
      else
        AC_MSG_ERROR([Oho! We can neither compile AVX512 intrinsics for Xeon nor Xeon Phi. This should not happen!])
      fi
    fi
  fi
1187
fi
1188
AC_LANG_POP([C])
1189
1190


1191
1192
1193
1194
1195
1196
1197
AC_LANG_PUSH([Fortran])
if test x"${need_bgp}" = x"yes"; then
  AC_MSG_CHECKING([whether we can compile with BGP intrinsics])
  AC_LINK_IFELSE([AC_LANG_SOURCE([
    program test_bgp
      complex*16 :: y3,q3,h2
      y3 = fxcpmadd(y3,q3,h2)
1198

1199
1200
1201
1202
1203
1204
1205
1206
1207
    end program
  ])],
    [can_compile_bgp=yes],
    [can_compile_bgp=no]
  )
  AC_MSG_RESULT([${can_compile_bgp}])
  if test x"$can_compile_bgp" != x"yes"; then
    AC_MSG_ERROR([Could not compile a test program with BGP intrinsics, adjust the FC compiler or FCFLAGS])
  fi
1208
1209
fi

Andreas Marek's avatar
Andreas Marek committed
1210

1211
1212
1213
1214
1215
1216
1217
if test x"${need_bgq}" = x"yes"; then
  AC_MSG_CHECKING([whether we can compile with BGQ intrinsics])
  AC_LINK_IFELSE([AC_LANG_SOURCE([
    program test_bgq
      VECTOR(REAL(8))::QPX_h2
      real*8         :: hh(10,2)
      QPX_h2 = VEC_SPLATS(hh(2,2))
Andreas Marek's avatar
Andreas Marek committed
1218

1219
1220
1221
1222
1223
1224
1225
1226
1227
    end program
  ])],
    [can_compile_bgq=yes],
    [can_compile_bgq=no]
  )
  AC_MSG_RESULT([${can_compile_bgq}])
  if test x"$can_compile_bgq" != x"yes"; then
    AC_MSG_ERROR([Could not compile a test program with BGQ intrinsics, adjust the FC compiler or FCFLAGS])
  fi
1228
fi
1229
AC_LANG_POP([Fortran])
1230

1231
1232
1233
1234
1235
1236
1237
1238
if test x"${need_gpu}" = x"yes" ; then
  AC_LANG_PUSH([C])
  CUDA_CFLAGS="$CUDA_CFLAGS -arch $cuda_compute_capability -O2 -I$CUDA_INSTALL_PATH/include"
  LDFLAGS="$LDFLAGS -L$CUDA_INSTALL_PATH/lib64"
  NVCCFLAGS="$NVCCFLAGS $CUDA_CFLAGS $CUDA_LDFLAGS"
  NVCC="nvcc"
  AC_SUBST(NVCC)
  AC_SUBST(NVCCFLAGS)
1239

1240
1241
1242
1243
1244
  dnl check whether nvcc compiler is found
  AC_CHECK_PROG(nvcc_found,nvcc,yes,no)
  if test x"${nvcc_found}" = x"no" ; then
    AC_MSG_ERROR([nvcc not found; try to set the cuda-path or disable GPU support])
  fi
1245

1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
  dnl check whether we find cublas
  AC_SEARCH_LIBS([cublasDgemm],[cublas],[have_cublas=yes],[have_cublas=no])
  if test x"${have_cublas}" = x"no"; then
    AC_MSG_ERROR([Could not link cublas; try to set the cuda-path or disable GPU support])
  fi
  AC_SEARCH_LIBS([cudaMemcpy],[cudart],[have_cudart=yes],[have_cudart=no])
  if test x"${have_cudart}" = x"no"; then
    AC_MSG_ERROR([Could not link cudart; try to set the cuda-path or disable GPU support])
  fi
  AC_LANG_POP([C])
1256
1257
fi

Andreas Marek's avatar
Andreas Marek committed
1258

1259
1260
1261
1262
m4_foreach_w([elpa_m4_kernel],elpa_m4_all_kernels,[
  AM_CONDITIONAL([WITH_]m4_toupper(elpa_m4_kernel)[_KERNEL],[test x"$use_[]elpa_m4_kernel[]" = x"yes"])
  if test x"$use_[]elpa_m4_kernel[]" = x"yes" ; then
    AC_DEFINE([WITH_]m4_toupper(elpa_m4_kernel)[_KERNEL],[1],[Build elpa_m4_kernel kernel])
1263
1264
1265
    kernel_defined=1
  else
    kernel_defined=0
1266
  fi
1267
1268
  [ELPA_2STAGE_]m4_toupper(elpa_m4_kernel)[_COMPILED]=$kernel_defined
  AC_SUBST([ELPA_2STAGE_]m4_toupper(elpa_m4_kernel)[_COMPILED])
1269
])
Andreas Marek's avatar
Andreas Marek committed
1270
1271


1272
1273
AM_CONDITIONAL([WITH_GPU_VERSION],[test x"$use_real_gpu" = x"yes" -o x"$use_complex_gpu" = x"yes"])
if test x"$use_real_gpu" = x"yes" -o x"$use_complex_gpu" = x"yes" ; then
1274
  AC_DEFINE([WITH_GPU_VERSION],[1],[enable GPU support])
1275
  AC_DEFINE([WITH_GPU_KERNEL],[1],[GPU kernel should be build])
1276
1277
1278
1279
1280
  ELPA_2STAGE_COMPLEX_GPU_COMPILED=1
  ELPA_2STAGE_REAL_GPU_COMPILED=1
else
  ELPA_2STAGE_COMPLEX_GPU_COMPILED=0
  ELPA_2STAGE_REAL_GPU_COMPILED=0
Andreas Marek's avatar
Andreas Marek committed
1281
fi
1282
1283
AC_SUBST([ELPA_2STAGE_COMPLEX_GPU_COMPILED])
AC_SUBST([ELPA_2STAGE_REAL_GPU_COMPILED])
Andreas Marek's avatar
Andreas Marek committed
1284

1285
1286
LT_INIT

1287
1288
1289
1290
1291
1292
DX_PDF_FEATURE(OFF)
DX_PS_FEATURE(OFF)
DX_MAN_FEATURE(ON)
DX_HTML_FEATURE(ON)
DX_INIT_DOXYGEN([ELPA], [Doxyfile], [docs])

Andreas Marek's avatar
Andreas Marek committed
1293
AC_MSG_CHECKING(whether assumed size Fortran arrays should be used)
1294
AC_ARG_ENABLE([assumed-size],
1295
                AS_HELP_STRING([--disable-assumed-size],
1296
1297
                               [do NOT use assumed-size Fortran arrays]),
                               [if test x"$enableval" = x"yes"; then
Andreas Marek's avatar
Andreas Marek committed
1298
                                  USE_ASSUMED_SIZE=yes
1299
1300
1301
                                else
                                  USE_ASSUMED_SIZE=no
                                fi],
1302
              [USE_ASSUMED_SIZE=yes])
1303
1304
1305
AC_MSG_RESULT([${USE_ASSUMED_SIZE}])
AM_CONDITIONAL([WITH_USE_ASSUMED_SIZE],[test x"$USE_ASSUMED_SIZE" = x"yes"])
if test x"${USE_ASSUMED_SIZE}" = x"yes" ; then
1306
  AC_DEFINE([USE_ASSUMED_SIZE],[1],[for performance reasons use assumed size Fortran arrays, even if not debuggable])
1307
1308
fi

Andreas Marek's avatar
Andreas Marek committed
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
AC_MSG_CHECKING(whether Fortran2008 features should be enabled)
AC_ARG_ENABLE([Fortran2008-features],
              AS_HELP_STRING([--enable-Fortran2008-features],
                             [enables some Fortran 2008 features, default yes.]),
			     [
			      if test x"$enableval" = x"yes"; then
			        enable_fortran2008_features=yes
		              else
			        enable_fortran2008_features=no
			      fi
			      ],
Andreas Marek's avatar
Andreas Marek committed
1320
              [enable_fortran2008_features=yes])
Andreas Marek's avatar
Andreas Marek committed
1321
1322
1323
1324
1325
1326
AC_MSG_RESULT([${enable_fortran2008_features}])
AM_CONDITIONAL([USE_FORTRAN2008],[test x"$enable_fortran2008_features" = x"yes"])
if test x"${enable_fortran2008_features}" = x"yes"; then
 AC_DEFINE([USE_FORTRAN2008], [1], [use some Fortran 2008 features])
fi

Andreas Marek's avatar
Andreas Marek committed
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
AC_MSG_CHECKING(whether autotuning functionality should be enabled)
AC_ARG_ENABLE([autotuning],
              AS_HELP_STRING([--enable-autotuning],
                             [enables autotuning functionality, default yes.]),
			     [
			      if test x"$enableval" = x"yes"; then
			        enable_autotuning=yes
		              else
			        enable_autotuning=no
			      fi
			      ],
              [enable_autotuning=yes])
AC_MSG_RESULT([${enable_autotuning}])
AM_CONDITIONAL([ENABLE_AUTOTUNING],[test x"$enable_autotuning" = x"yes"])
if test x"${enable_autotuning}" = x"yes"; then
 AC_DEFINE([ENABLE_AUTOTUNING], [1], [enable autotuning functionality])
fi

AC_MSG_CHECKING(whether C tests should be provided)
AC_ARG_ENABLE([c-tests],
              AS_HELP_STRING([--enable-c-tests],
                             [enables the C tests for elpa, default yes.]),
			     [
			      if test x"$enableval" = x"yes"; then
			        enable_c_tests=yes
		              else
			        enable_c_tests=no
			      fi
			      ],
              [enable_c_tests=yes])
AC_MSG_RESULT([${enable_c_tests}])
AM_CONDITIONAL([ENABLE_C_TESTS],[test x"$enable_c_tests" = x"yes"])
if test x"${enable_c_tests}" = x"yes"; then
 AC_DEFINE([ENABLE_C_TESTS], [1], [enable C tests])
fi

Andreas Marek's avatar
Andreas Marek committed
1363
1364
1365
1366
AC_MSG_CHECKING(whether we build for K-computer)
AC_ARG_ENABLE([K-computer],
              AS_HELP_STRING([--enable-K-computer],
                             [enable builds on K-Computer, default no.]),
Andreas Marek's avatar
Andreas Marek committed
1367
			     [if test x"$enableval" = x"yes"; then
Andreas Marek's avatar
Andreas Marek committed
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
			        enable_kcomputer=yes
		              else
				enable_kcomputer=no
			      fi],
              [enable_kcomputer=no])
AC_MSG_RESULT([${enable_kcomputer}])
AM_CONDITIONAL([BUILD_KCOMPUTER],[test x"$enable_kcomputer" = x"yes"])
if test x"${enable_kcomputer}" = x"yes"; then
 AC_DEFINE([BUILD_KCOMPUTER], [1], [build for K-Computer])
 FC_MODINC="-I"
  if test x"${USE_ASSUMED_SIZE}" = x"yes" ; then
    AC_MSG_ERROR(on K-computer you have to switch off assumed-size arrays!)
  fi
  if test x"${enable_fortran2008_features}" = x"yes" ; then
    AC_MSG_ERROR(on K-computer you have to switch off Fortran 2008 features!)
  fi
fi

Andreas Marek's avatar
Andreas Marek committed
1386
1387
1388
1389
AC_MSG_CHECKING(whether we build for NEC SX-Auroa)
AC_ARG_ENABLE([SX-Aurora],
              AS_HELP_STRING([--enable-SX-Aurora],
                             [enable builds on SX-Aurora, default no.]),
Andreas Marek's avatar
Andreas Marek committed
1390
			     [if test x"$enableval" = x"yes"; then
Andreas Marek's avatar
Andreas Marek committed
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
			        enable_sxaurora=yes
		              else
				enable_sxaurora=no
			      fi],
              [enable_kcomputer=no])
AC_MSG_RESULT([${enable_sxaurora}])
AM_CONDITIONAL([BUILD_KCOMPUTER],[test x"$enable_sxaurora" = x"yes"])
if test x"${enable_sxaurora}" = x"yes"; then
 AC_DEFINE([BUILD_SXAURORA], [1], [build for SX-Aurora])
 FC_MODINC="-I"
  #if test x"${USE_ASSUMED_SIZE}" = x"yes" ; then
  #  AC_MSG_ERROR(on K-computer you have to switch off assumed-size arrays!)
  #fi
  if test x"${enable_fortran2008_features}" = x"yes" ; then
    AC_MSG_ERROR(on SX-Aurora you have to switch off Fortran 2008 features!)
  fi
fi

Andreas Marek's avatar