Open bartoldeman opened 1 year ago
@ericch1 FYI
Thanks for the info! I think it can me a big difference for users using MPI IO aware libraries/softwares.
@vanzonr
In the same way, I have been unable to use MPI IO hints with OpenMPI 4.0.3.
With 4.1.1 it seems ok. So I will surely ask soon to rebuild a PETSc version to switch to a more recent OpenMPI version. I am waiting to see the conclusion of this OpenMPI ticket:
Interesting. I wonder why it is off by default ? Doesn't make a whole lot of sense for MPI
Good question. Should test this a little to see what happens on non-Lustre/GPFS fs, if it complains or not.
Maybe here is a clue:
They are talking about a bug with GPFS in Intel MPI Library 2019 Update 5... Would worth to take care in fact where and when this is activated...
Suggested by Eric Chamberland in a ticket.