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<p class="MsoNormal">The I/O is not through tensorflow. Its through h5py and numpy.load and I verified both without tensorflow import are getting traced. I already verified that import of tensorflow doesn’t change any environment variables. </p>
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<p class="MsoNormal">Hari</p>
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<p class="MsoNormal" style="border:none;padding:0in"><b>From: </b><a href="mailto:laytonjb@gmail.com">Jeffrey Layton</a><br>
<b>Sent: </b>Monday, July 6, 2020 9:41 AM<br>
<b>To: </b><a href="mailto:hdevarajan@anl.gov">Devarajan, Hariharan</a><br>
<b>Cc: </b><a href="mailto:darshan-users@lists.mcs.anl.gov">darshan-users@lists.mcs.anl.gov</a><br>
<b>Subject: </b>Re: [Darshan-users] Darshan not tracing with tensorflow import.</p>
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<p class="MsoNormal">About 2 months ago, I tried using Darshan to trace a TensorFlow2 DL training. I could not trace the input. What I _think_ happens is the TF2 uses mmap() for reading the input files and I don't think Darshan can capture that file IO. But
I'm not a Darshan expert so perhaps someone has tried this before and can help<o:p></o:p></p>
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<p class="MsoNormal">(BTW - it's possible to build TensorFlow so it doesn't use mmap() for reading files.)<o:p></o:p></p>
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<p class="MsoNormal">Jeff<o:p></o:p></p>
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<p class="MsoNormal">On Mon, Jul 6, 2020 at 1:08 PM Devarajan, Hariharan <<a href="mailto:hdevarajan@anl.gov">hdevarajan@anl.gov</a>> wrote:<o:p></o:p></p>
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<span style="color:#212121">Hello,</span><o:p></o:p></p>
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<span style="color:#212121"> </span><o:p></o:p></p>
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<span style="color:#212121">I was able to run my test program with 3.2.1 darshan. However, when i trace an app which load tensorflow it seems darshan doesn't produce trace. I am attaching two tars one with working example and one without. The only difference
between the two is in test.py where i import tensorflow on first line.</span><o:p></o:p></p>
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<span style="color:#212121"> </span><o:p></o:p></p>
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<span style="color:#212121">Can you please assist on how I can further debug the problem?
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<span style="color:#212121">Regards</span><o:p></o:p></p>
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<span style="color:#212121">Hariharan</span></p>
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<p class="MsoNormal" style="margin-left:4.8pt">_______________________________________________<br>
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<a href="https://lists.mcs.anl.gov/mailman/listinfo/darshan-users" target="_blank">https://lists.mcs.anl.gov/mailman/listinfo/darshan-users</a><o:p></o:p></p>
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