1. 26 Feb, 2014 2 commits
    • Andreas Marek's avatar
      ELPA_development_version_qr: Changes in OpenMP detection · 94020ebc
      Andreas Marek authored
      The Intel Fortran compiler accepts the flag "-fopenmp" for compilation
      with OpenMP. However, the Intel MPI compiler wrapper does not.
      With the Intel compiler, this leads to the fact, that if ELPA is compiled
      with the "-fopenmp" flag a not thread-save version of the Intel MPI
      library is used and the test (with make check) fails.
      
      Intel promised to solve this in the future.
      
      However, for now the problem is solved in the user friendly way that no
      manipulation of the MPI compiler wrappers have to be done:
      
      For detecting the OpenMP compiler flags, instead of the predefined
      macro "AC_OPENMP" of autoconf a modified macro "AX_ELPA_OPENMP"
      is used, which first checks "-openmp" and only then "-fopenmp".
      Thus it is ensured that the Intel compiler (and mpi compiler wrapper)
      does not get confused.
      
      This is invisible for users calling "configure" during the installation
      process.
      94020ebc
    • Andreas Marek's avatar
  2. 10 Dec, 2013 2 commits
    • Andreas Marek's avatar
      Elpa_development_version_qr · 15dcc76b
      Andreas Marek authored
      Removed a forgotten C-preprocessor error flag.
      Futhermore, describe in the documentation why at the moment a
      build of Bluegene P/Q kernels and OpenMP is not allowed.
      15dcc76b
    • Andreas Marek's avatar
      Add parallel build functionality in ELPA_development_version_qr · 0cf41397
      Andreas Marek authored
      Automake does normally not understand the dependencies of Fortran 90
      modules, thus a parallel build will almost certainly fail.
      
      As in ELPA 2011.12.002, the ELPA_development_version_qr  now
      includes scripts from the fdep project (see git.schokokeks.org/fdep)
      which cirumvents this problem.
      
      Thanks to Lorenz Huedepohl, now a parallel build works.
      0cf41397
  3. 09 Dec, 2013 1 commit
    • Andreas Marek's avatar
      ELPA_development_version_qr: updated build procedure · 304b539c
      Andreas Marek authored
      Identical to ELPA 2013.11.001 the build procedure is updated
      
        - updated INSTALL documentation
        - improved description of kernels src/elpa2_kernels/README_elpa2_kernels.txt
        - improved OpenMP builds:
            * usage of OpenMP can now be specified with
              "--enable-openmp" or "--with-openmp"
        - improved checks for AVX build (identical to ELPA 2013.08.003):
           * if AVX kernels are specified AVX compilation is tested
           * the option "--with-avx-optimization" automatically updates
             CFLAGS and CXXFLAGS with optimization flags
      304b539c
  4. 29 Nov, 2013 1 commit
    • Andreas Marek's avatar
      QR decompostion functionality in branch ELPA_development_version_qr · 52cda2cf
      Andreas Marek authored
      Now, the branch ELPA_development_version_qr contains the full QR
      functionality, which was introduced by Auckenthaler in the (obsolete)
      ELPA_development_version_branch
      
      Changes are:
      - build procedure with configure like the other branches/releases
      - renaming of a few files
      
      The QR decomposition was tested for a few matrices and gave correct
      results
      52cda2cf
  5. 31 Oct, 2013 1 commit
  6. 28 Oct, 2013 3 commits
    • Andreas Marek's avatar
      Introducing OpenMP functionality in ELPA_development_version_OpenMP · 48e712ef
      Andreas Marek authored
      This commit introduces OpenMP functionality in the
      ELPA_development_version_OpenMP branch.
      
      It contains several bugfixes to the OpenMP functionality in the
      branch "ELPA_development_version", the later will soon be deleted
      since the new branch is the new reference implementation.
      
      The current branch contains the following features/bugfixes:
      - building of the OpenMP version of ELPA via configure and the
        "--with-openmp" flag. The build library contains a "_mt"
        (multi-threaded) in its name.
        The configure procedure should (hopefully) determine for each
        compiler the neccessary OpenMP flags.
        If the "--with-openmp" flag is ommitted exactly the same code
        as in the ELPA 2013.08.001 release is used and build in the
        same way
      - The example test cases print which kernels have been used and
        how many OpenMP threads are used at runtime
      - correct handling of OpenMP stack arrays: the previous implementation
        caused compiler dependent segmentation faults
      - OpenMP capability with all available kernels: the correctness of
        the computations have been checked for all kernels except the
        Bluegene (P/Q) versions
      48e712ef
    • Andreas Marek's avatar
      Creating of ELPA_development_version_OpenMP · bc9a3d07
      Andreas Marek authored
      Based on the ELPA 2013.08.001 a development version for ELPA OpenMP
      has been created
      bc9a3d07
    • Andreas Marek's avatar
      BUGFIX and BUGFIX versioning · 9e3319b3
      Andreas Marek authored
      A bug in ELPA_2013.08 was fixed: due to typo in a preprocessor statement
      the kernels optimized for BLUGENE/P could not be used correctly.
      
      In course of this action, also a bugfix versioning scheme was
      introduced: in case of bugfixes they are versioned with an extra 3 digit
      number in the ELPA release name, i.e ELPA 2013.08 -> 2013.08.001
      
      Consistently any new release of ELPA will from now on start on the minor
      level "000".
      9e3319b3
  7. 13 Aug, 2013 1 commit
    • Andreas Marek's avatar
      Update of Install documentation · 82eaba06
      Andreas Marek authored
      It is pointed out that it is mandatory to set the variables
      "BLACS_LDFLAGS" and "BLACS_FCFLAGS" at build time.
      
      Furthermore, it is clarified how to set individual optimization
      flags at build time
      82eaba06
  8. 12 Aug, 2013 1 commit
    • Andreas Marek's avatar
      Change of versioning of ELPA lib and the API · 411999c8
      Andreas Marek authored
      Thanks to a comment to the Debian community, the versioning
      of the ELPA library and its API are changed:
      
      - the API version nummer starts now with 0.0.0 and not
        anymore with the version number of the first ELPA release,
        i.e. 2011.12
      
      - if ELPA is installed as library, the files are now named
        elpa.so.API_VERSION. All references to the ELPA version
        and the used compiler vanished, since these are considered
        harmeful.
      
      Note, that at a later stage, if neccessary, the library name might
      also contain the uses MPI version.
      411999c8
  9. 08 Aug, 2013 1 commit
    • Andreas Marek's avatar
      Elpa release 2013.08 · b015b6e1
      Andreas Marek authored
      This commit releases ELPA version 2013.08
      
      It is identical with the latest commit version 2013.02_BETA, except:
      
      - rename ELPA_2013.02.BETA -> ELPA_2013.08
      - update of configure.ac
      - remove of src/elpa2.f90_save
      - remove of test/Makefile
      
      This version has been tested extensivly, however, there might always
      be some bugs.
      In case of questions please contact elpa-library@rzg.mpg.de or via
      the ELPA forum on http://elpa-lib.fhi-berlin.mpg.de/forum/index.php
      b015b6e1
  10. 25 Jul, 2013 1 commit
    • Andreas Marek's avatar
      Automake feature for this ELPA version · 00116c53
      Andreas Marek authored
      Similiar to ELPA_2011.12 this version of ELPA now supports automake.
      
      To the _source_ code of ELPA the following changes had to be made:
      
      -elpa2.F90 now use the create "config-f90.h" file to choose via
       preprocessor switches which kernel was defined by the user
      
      - the SSE-AVX intrinsic kernels of A. Heinecke had to be changed such
        that they support "internal linkage" for the building of a shared
        library.
      
      The following other changes were made to the documentation
      
      - elpa2_kernels/README_elpa2_kernels.txt was updated; the new configure
        targets are explained
      
      - README, INSTALL were updated
      
      To high propability this commit is the last one, before this beta
      version	will become an official release
      00116c53
  11. 15 Jul, 2013 1 commit
    • Andreas Marek's avatar
      Automake build feature for ELPA_2011.12 · 5306eaa1
      Andreas Marek authored
      ELPA version 2011.12 can now be build with automake into
      a shared/static library. This should help the bundling in
      linux distributions
      
      The other versions of ELPA will be updated soon
      5306eaa1