On Fri, 27 Nov 2020, Dave Love wrote:
...
It's less dramatic in the case I ran, but there's clearly something
badly wrong which needs profiling. It's probably useful to know how
many ranks that's with, and whether it's the default striping. (I
assume with default ompio fs parameters.)
Hi Dave,
It was run the way hdf5's "make check" runs it - that's 6 ranks. I didn't
do anything interesting with striping so, unless t_bigio changed it, it'd
have a width of 1.
...
I can have a look with the current or older romio, unless someone else
is going to; we should sort this.
If you were willing, that would be brilliant, thanks :)
My concern is that openmpi 3.x is near, or at, end of life.
'Twas ever thus, but if it works?
Evidently it wouldn't fit the definition of "works" for some users,
otherwise there wouldn't have been a version 4!
I just didn't want Lustre MPI-IO support to be forgotten about,
considering the 4.x series is 2 years old now.
All the best,
Mark