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Closed Some big worries with spm and recent intel compilers
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  • Some big worries with spm and recent intel compilers

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  • Closed Issue created by Andrea Piacentini

    I am trying to install pastix on some of our servers.
    On the Météo-France server (our main target) we'r bound to intel 16.0.1.150 with intelmpi 5.1.2.150. In this version of the compiler, mkl does not contain LAPACKE, therefore we cannot even compile.

    Lucky case, my machine, intel 16.0.4.258 with intelmpi/5.1.3.223. Compilation ok, tests ok (but hb ) no problems with the wrapper/f90 tests.

    More recent: intel 17.0.4.196 or intel/18.0.1.163 compilation is OK, but the flaplacian and both fmultilap tests fail.
    Some debug with intel17 shows that flaplacian passes if we comment out the deallocate at line 178:

      call spmCheckAxb( dparm(DPARM_EPSILON_REFINEMENT), nrhs, spm, x0_ptr, spm%n, b_ptr, spm%n, x_ptr, spm%n, info )
    
      call spmExit( spm )
      !AP INTEL17 deallocate( spm )
      deallocate(x0)
      deallocate(x)

    The fmultilap case works well with the test_mt.in input parameters set if we comment out the analogous deallocate at line 557

            call spmExit( sys_array(im)%spm )
            !AP INTEL17 deallocate( sys_array(im)%spm )
         end do
    

    Yet the problem is deeper when running with the test_seq.in input parameters set (notice that "check and correct" is disabled, therefore it runs through spmConvert):

     !====================================================================!
      Outer iteration:            1
     !--------------------------------------------------------------------!
      Nb of factorization performed in parallel      =            1
      Nb of threads used by PaStiX per factorization =            5
    *** Error in `./fmultilap': double free or corruption (out): 0x00002b6e1d085400 ***
    ======= Backtrace: =========
    [...]
    fmultilap          00000000004FBB49  spmExit                   208  spm.c
    fmultilap          000000000051BDAF  z_spmConvertIJV2C          84  z_spm_convert_to_csc.c
    fmultilap          00000000004FC13E  spmConvert                391  spm.c
    fmultilap          000000000041A279  spmf_mp_spmconver         461  spmf.f90
    fmultilap          00000000004159FE  fmultilap_IP_mult         859  fmultilap.f90
    fmultilap          0000000000410E73  MAIN__                    292  fmultilap.f90
    Edited by Andrea Piacentini

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