Paul Coffman

I am running into this same signal 6 failure in issue 7645 as well on the MPI_File_write_all in my 'alltoall transfer' ior if I increase the collective buffer size to...

I should add I have several apps and exercisers using hdf5 and pnetcdf that have horrendous MPI-IO collective buffering performance, but the reproducer is much more complicated, I think my...

OK I put the src code here: `/lus/flare/projects/Aurora_deployment/pkcoff/tickets/ior-cbperf/code/src` Just grep for 'ALL_TO_ALL_TRANSFER' to see what I changed from the base code. No even the baseline results are unacceptable in terms...