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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