Release candidate rc1 for ELPA 2020.05.001

Changelog

-Changelog for upcoming release
+Changelog for next release
 
 - not yet decided
 
-Changelog for ELPA 2020.05.001
+Changelog for ELPA 2020.05.001.rc1
+
 - improved documentation, including fixing of typos and errors in markdown
 - Fix a bug in the calling of Cannons algorithm which might lead to crashes
 for a squared process grid
+- improvements and bugfixes of the ELPA2 stage GPU version, see
+   https://arxiv.org/abs/2002.10991
+- bugfix for the build of AVX-512 KNL kernels
+- clean seperation of SIMD instructions for AVX and AVX2 kernels
+- better error checking for allocations / deallocations of CPU and GPU memory
+- experimental feature of matrix redistribution
+- bugfix in the cpuid tests
 
 Changelog for ELPA 2019.11.001
 

INSTALL.md

@@ -8,9 +8,7 @@ which makes it easier to install the *ELPA* library.
 
 The release ELPA 2018.11.001 was the last release, where the legacy API has been
 enabled by default (and can be disabled at build time).
-With release ELPA 2019.05.001 the legacy API is disabled by default, however,
-can be still switched on at build time.
-With the release ELPA 2019.11.001, the legacy API will be deprecated and not supported anymore.
+With the release ELPA 2019.11.001, the legacy API has been deprecated and the support has been closed.
 
 The release of ELPA 2020.05.001.rc1 does change the API and ABI compared to the release 2019.11.001, since
 the legacy API has been dropped.

configure.ac

@@ -27,7 +27,7 @@ AM_SILENT_RULES([yes])
 #    by the current interface, as they are ABI compatible (e.g. only new symbols
 #    were added by the new interface)
 #
-AC_SUBST([ELPA_SO_VERSION], [15:0:0])
+AC_SUBST([ELPA_SO_VERSION], [15:1:0])
 
 # AC_DEFINE_SUBST(NAME, VALUE, DESCRIPTION)
 # -----------------------------------------
@@ -39,11 +39,11 @@ AC_SUBST([$1], ['$2'])
 # API Version
 AC_DEFINE([EARLIEST_API_VERSION], [20170403], [Earliest supported ELPA API version])
 
-AC_DEFINE_SUBST(CURRENT_API_VERSION, 20191110, "Current ELPA API version")
+AC_DEFINE_SUBST(CURRENT_API_VERSION, 20200417, "Current ELPA API version")
 # Autotune Version
 AC_DEFINE([EARLIEST_AUTOTUNE_VERSION], [20171201], [Earliest ELPA API version, which supports autotuning])
-AC_DEFINE([CURRENT_AUTOTUNE_VERSION], [20190524], [Current ELPA autotune version])
-AC_DEFINE_SUBST(CURRENT_AUTOTUNE_VERSION, 20190524, "Current ELPA autotune version")
+AC_DEFINE([CURRENT_AUTOTUNE_VERSION], [20200417], [Current ELPA autotune version])
+AC_DEFINE_SUBST(CURRENT_AUTOTUNE_VERSION, 20200417, "Current ELPA autotune version")
 
 AX_CHECK_GNU_MAKE()
 if test x$_cv_gnu_make_command = x ; then

src/elpa.F90

@@ -111,7 +111,7 @@
 !>
 !>  ! We urge the user to always check the error code of all ELPA functions
 !>
-!>  if (elpa_init(20191110) /= ELPA_OK) then
+!>  if (elpa_init(20200417) /= ELPA_OK) then
 !>     print *, "ELPA API version not supported"
 !>     stop
 !>   endif
@@ -178,7 +178,7 @@
 !>
 !>   /*  We urge the user to always check the error code of all ELPA functions */
 !>
-!>   if (elpa_init(20191110) != ELPA_OK) {
+!>   if (elpa_init(20200417) != ELPA_OK) {
 !>     fprintf(stderr, "Error: ELPA API version not supported");
 !>     exit(1);
 !>   }
@@ -233,7 +233,7 @@
 !>  class(elpa_autotune_t), pointer :: tune_state
 !>  integer :: success
 !>
-!>  if (elpa_init(20191110) /= ELPA_OK) then
+!>  if (elpa_init(20200417) /= ELPA_OK) then
 !>     print *, "ELPA API version not supported"
 !>     stop
 !>   endif