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<p class="MsoNormal">Hi Howard,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I think for any provider that needs to pin memory during memory registration, using fork can cause data corruption, thus will cause problem.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The EFA provider registered a fork callback function to prevent user from using fork, unless they enable the additional fork support.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Sincerely,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Wei Zhang<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Libfabric-users <libfabric-users-bounces@lists.openfabrics.org> on behalf of Howard Pritchard <hppritcha@gmail.com><br>
<b>Date: </b>Wednesday, November 24, 2021 at 1:47 PM<br>
<b>To: </b>"libfabric-users@lists.openfabrics.org" <libfabric-users@lists.openfabrics.org><br>
<b>Subject: </b>[EXTERNAL] [libfabric-users] OFI libfabric and forking<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi All, <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Before I open an issue against libfabric, I've got a high level question.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">If an application process initializes libfabric, and in particular, uses the memory monitor infrastructure, should the application be able to fork additional processes without problems?<o:p></o:p></p>
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<p class="MsoNormal">Assume the forked processes are not utilizing libfabric in any way.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I just wanted to get a sanity check before opening an issue post Thanksgiving holidays.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Howard<o:p></o:p></p>
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