[QE-users] GRIR443 benchmark - is it running properly?

[Steve Brasier]

Hello all,

I'm currently trying to run a performance benchmark for an InfiniBand
cluster using QE 6.4.1 and the GRIR443
<https://github.com/QEF/benchmarks> benchmark
using:

srun --mpi=pmix /q-e-qe-6.4.1/bin/pw.x -nimage 4 -in grir443.in
-disk_io='none'

I haven't been able to complete a run yet due to running out of memory but
that's in line with QE's memory estimates, so I can deal with that. However
I was a bit surprised to see that except a tiny bit of data transfer at
initial startup, there's zero communications between the 4 nodes I'm using.
Is that expected behaviour for pw.x, or does that suggest something is
wrong?

QE passes the `run-tests-pw-parallel` test suite and results from running
`PW/examples/example01` on 4x nodes match the reference ones.

Thanks for any help, or even pointers to GRIR443 tutorials or results.

regards
Steve Brasier
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