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Hi, Jim
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<div>FYI. Darshan now can capture the I/O activities of PnetCDF,</div>
<div>in addition to the already MPI-IO and POSIX-IO.</div>
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<div>Wei-keng </div>
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<div>On Aug 9, 2023, at 6:22 PM, Wei-Keng Liao <wkliao@northwestern.edu> wrote:</div>
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In that case, I have the E3SM-IO benchmark that has a fairly complicate I/O
<div>partitioning pattern. It used the decomposition maps generated from PIO.</div>
<div><a href="https://urldefense.com/v3/__https://github.com/Parallel-NetCDF/E3SM-IO__;!!Dq0X2DkFhyF93HkjWTBQKhk!UJAnknjDPQWY43szbAutlokjDrSHyBOcTlhEOChqYtThxnr812hxwvb8aSmHcEPiNOxNdOUHZi9Z2fyXbg2j6JH1HTo$">https://github.com/Parallel-NetCDF/E3SM-IO</a><br>
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<div>Wei-keng </div>
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<div>On Aug 9, 2023, at 6:17 PM, Jim Edwards <jedwards@ucar.edu> wrote:</div>
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I think that your example case is too simple - it's doing a simple block decomposition.</div>
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In order to get the performance difference I am observing I need to do a more complicated</div>
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mapping. I will work on a program that reproduces the problem without pio but it may take a
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while. <br>
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