[mpich-discuss] Race condition in MPI3 (Fortran, shared memory)

[C.Friedrich]

Thanks for the suggestion! Adding MPI_WIN_SYNC in this way:
      do i = 1,10000
        call mpe_win_fence(a,0,Nwin,err)
        a = a + 1
        call mpi_win_sync(Nwin,err)
        call mpe_win_fence(a,0,Nwin,err)
      enddo
does not work. The compiled executable either issues the error
Fatal error in MPI_Win_sync: Wrong synchronization of RMA calls , error
stack:
MPI_Win_sync(115)..: MPI_Win_sync(win=0xa0000000) failed
MPID_Win_sync(1805): Wrong synchronization of RMA calls
or simply dies (without writing the numbers). Perhaps I use it
incorrectly...

Christoph



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Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt,
Prof. Dr. Sebastian M. Schmidt
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