Thanks for the report,
this is indeed a bug I fixed at https://github.com/open-mpi/ompi/pull/6790
meanwhile, you can manually download and apply the patch at
https://github.com/open-mpi/ompi/pull/6790.patch
Cheers,
Gilles
On 7/3/2019 1:30 AM, Gyevi-Nagy László via users wrote:
Hi,
I had some issues with spawning processes in Fortran. I currently use
Open MPI v4.0.1. I've looked into it and stumbled into a few errors in
ompi_comm_spawn_f().
If 8-byte integers are used, when the function is called with
array_of_errcodes=MPI_ERRCODES_IGNORE, the array c_array_of_errcodes
does not get allocated but it is freed before the function returns.
Also, when array_of_errcodes is not MPI_ERRCODES_IGNORE, size (the
size of the calling communicator) * sizeof(int) bytes are allocated
for c_array_of_errcodes, but it is filled - correctly - with maxprocs
(the number of spawned processes) integers in mpi_comm_spawn().
I also had trouble with -map-by node and mpi_comm_spawn. This bug has
since been fixed (Oct 6, 2018, commit 51acbf7) but I can only see it
on the master branch. Could you tell me when it will be available in a
stable release?
Thank you in advance,
László Gyevi-Nagy
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