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VI4IO / io500-app

Development version of the new IO-500 Application
MIT License
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-Y flag is applied inconsistently between bash and C tests #19

Closed carlilek closed 4 years ago

carlilek commented 4 years ago

The C app correctly only applies the -Y flag to the mdtest write phases, while the io500_fixed.sh script applies it to all phases of mdtest, which skews the results (at least for certain filesystems) away from the SC19 results.

I believe this is the section of io500_fixed.sh that is incorrect:

183 params_md_easy="-F -P -Y -d $io500_workdir/mdt_easy -n $io500_mdtest_easy_files_per_proc $io500_mdt est_easy_params -x $io500_workdir/mdt_easy-stonewall -N 1" 184 result_file=$io500_result_dir/$phase.txt

I believe that the -Y flag should be added in the if [[ "$1" == "write ]]; then section in order to maintain consistency with SC19 testing and the C app.

The mdtest_hard section has the same issue.

adilger commented 4 years ago

This is fixed in io-500-dev commit 3de4e2d795 to remove the -Y flag from the read phases, which was unintentional.