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<p class="MsoNormal"><span style="font-size:11.0pt">HI All,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">It looks like we need to discuss an issue open by Rolf last week:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><a href="https://github.com/mpi-forum/mpi-issues/issues/435">https://github.com/mpi-forum/mpi-issues/issues/435</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">He does have a point that as the Sessions Model related text currently stands, there is no explicit prohibition of applications using Sessions asymmetrically.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">By asymmetric I mean that different MPI processes derive MPI communicators, files, or windows from sessions handles differently. The current text implies that this is not allowed, or at least leads to logical
inconsistencies, owing to the description of the collective behavior of Session finalize in the event that there are communicators, windows, or files still associated with a session handle when Session finalize is invoked.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I propose that for 4.1, we add an additional paragraph to 11.3 that states something to the effect that this asymmetry is not allowed, or at the minimum that if an application does so, the behavior of Session
finalize may be undefined.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Other ideas on how to address 435 would be welcome!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Howard<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#0B1A8C">Howard Pritchard<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#545961">Research Scientist<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#545961">HPC-ENV<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0B1A8C">Los Alamos National Laboratory<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0B1A8C">lanl.gov<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0B1A8C"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><a href="https://www.instagram.com/losalamosnatlab/"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0B1A8C;text-decoration:none"><img border="0" width="26" height="26" style="width:.2708in;height:.2708in" id="Picture_x0020_4" src="cid:image002.png@01D6FD5C.3900A350" alt="signature_493573494"></span></b></a><a href="https://twitter.com/LosAlamosNatLab"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0B1A8C;text-decoration:none"><img border="0" width="26" height="26" style="width:.2708in;height:.2708in" id="Picture_x0020_3" src="cid:image003.png@01D6FD5C.3900A350" alt="signature_1756087032"></span></b></a><a href="https://www.linkedin.com/company/los-alamos-national-laboratory/"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0B1A8C;text-decoration:none"><img border="0" width="26" height="26" style="width:.2708in;height:.2708in" id="Picture_x0020_2" src="cid:image004.png@01D6FD5C.3900A350" alt="signature_1451995439"></span></b></a><a href="https://www.facebook.com/LosAlamosNationalLab/"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0B1A8C;text-decoration:none"><img border="0" width="26" height="26" style="width:.2708in;height:.2708in" id="Picture_x0020_1" src="cid:image005.png@01D6FD5C.3900A350" alt="signature_1759973918"></span></b></a><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0B1A8C"><o:p></o:p></span></b></p>
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