1. 01 Aug, 2018 1 commit
    • Pavel Kus's avatar
      integration of C implementation of Cannon algorithm to ELPA · 3eb37776
      Pavel Kus authored
      this commit does not work, the generalized EVP problems fail from 2
      - Cannons algorithm does not work for the processor grid shape we use at
        the moment in tests (It only works if num. of process columns is a
        multiple of num. of process rows, which is not true in ELPA for 2 mpi
      - Cannons algorithm does not work as integrated to ELPA for larger
        matrices (not clear why at the moment)
      There are 2 new tests, which should work
      - test_cannon.c: it tests the new algorithm without going through
        Fortran, as it has been delivered
      - test_c_bindings: it tests transfering a 2D fortran matrix to C and
        back, as it is done with the cannons algorithm in the normal ELPA