Exercise session 13: Lustre I/O¶
The files for the exercises can be found in Exercises/HPE/day4/VH1-io.
Untar the file and you'll find a full I/O experiment with striping.
Alternatively, look again at the MPI exercises with Apprentice If you did not do this before, set PAT_RT_SUMMARY=0. You get trace data per rank when you do this (huge file). Set only 2 cycles in the input file (indat). Use app2 on the .ap2 file to see new displays (see help).
Materials¶
Archived materials on LUMI:
-
Exercise assignments in
/appl/local/training/4day-20231003/files/LUMI-4day-20231003-Exercises_HPE.pdf -
Exercises as bizp2-compressed tar file in
/appl/local/training/4day-20231003/files/LUMI-4day-20231003-Exercises_HPE.tar.bz2 -
Exercises as uncompressed tar file in
/appl/local/training/4day-20231003/files/LUMI-4day-20231003-Exercises_HPE.tar
Q&A¶
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Is there a typo in the README? For the
lfs setstripe -c ${STRIPE_COUNT} -s ${STRIPE_SIZE} ${RUNDIR}/outputshould the capital-Sbe used instead of-s?- Indeed. I wonder how this was never noted, the error is in the slide also which has been used for 2 years...
It turns out to be wrong on the slide (corrected version is now available), wrong in the README (in the project directory, archived version corrected), but correct in the script where
-Sis used.
- Indeed. I wonder how this was never noted, the error is in the slide also which has been used for 2 years...
It turns out to be wrong on the slide (corrected version is now available), wrong in the README (in the project directory, archived version corrected), but correct in the script where