Thanks Gilles
I realise this is “off topic”. I was hoping the Open-MPI ORTE/HNP message might
give me a clue where to look for my driver problem.
Regarding P/Q ratios, indeed P=2 & Q=16 does indeed give me better performance.
Kind regards
John,
I am not sure you will get much help here with a kernel crash caused
by a tweaked driver.
About HPL, you are more likely to get better performance with P and Q
closer (e.g. 4x8 is likely better then 2x16 or 1x32).
Also, HPL might have better performance with one MPI task per node and
a
Hi
I have generated this problem myself by tweaking the MTU of my 8 node Raspberry
Pi 4 cluster to 9000 bytes, but I would be grateful for any ideas/suggestions
on how to relate the Open-MPI ORTE message to my tweaking.
When I run HPL Linpack using my “improved” cluster, it runs quite happily
