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Dear all, MPI Collective WG is meeting today in a bit more than one hour. Please join us to discuss the different topics listed below. Tony Skjellum (TNTECH) is inviting you to a scheduled Zoom meeting. Topic: MPI WG Collective (Persistent too)</div>
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<p>Dear all,</p>
<p><br>
</p>
<p>MPI Collective WG is meeting today in a bit more than one hour.</p>
<p>Please join us to discuss the different topics listed below.</p>
<p><br>
</p>
<p><br>
</p>
<p></p>
<div><font face="Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif" size="3" color="black" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif, serif, "EmojiFont";"><span style="font-size:12pt;">Tony
<span class="highlight" id="0.657177892660256" name="searchHitInReadingPane">Skjellum</span> (TNTECH) is inviting you to a scheduled Zoom meeting.</span></font></div>
<div><font face="Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif" size="3" color="black" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif, serif, "EmojiFont";"><span style="font-size:12pt;"><br>
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MPI WG Collective (Persistent too)</span></font></div>
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This is a recurring meeting Meet anytime</span></font></div>
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Zoom Meeting</span></font></div>
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ID: 858 9529 9644</span></font></div>
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mpi4eva</span></font></div>
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<br>
<p></p>
<p>--------------------------------</p>
<p><br>
</p>
<p></p>
<div>
<p style="line-height: 100%; margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">AGENDA - FEB 25, 2026</font></font></font></p>
<p style="line-height: 100%; margin-bottom: 0.2in"><br>
<br>
</p>
<ol>
<li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Reconstitution - subsume partitioned, persistent, point-to-point
and collective discussions</font></font></font></p>
</li><li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Items for good of the order form participants not covered
below</font></font></font></p>
</li><li>
<p><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Align with hybrid/streams work in pt2pt scope</font></font></font></p>
</li></ol>
<p style="margin-bottom: 0in"><br>
</p>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">BIG PICTURE AGENDA FOR GROUP, NOT EVERYTHING FOR FIRST MEETING.</font></font></font></p>
<p><br>
<br>
</p>
<ol>
<li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Discuss
<b>partitioned collective </b>status and plans</font></font></font></p>
<ol>
<li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Prior papers</font></font></font></p>
</li><li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Issues with synchronizing collectives</font></font></font></p>
</li><li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Prototypes</font></font></font></p>
</li><li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">New ideas with buffer management</font></font></font></p>
</li><li>
<p><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Path to standardization</font></font></font></p>
</li></ol>
</li><li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Corollary issues with
<b>persistent collectives</b></font></font></font></p>
<ol>
<li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Non-blocking init/free - not allowed<br>
</font></font></font></p>
</li></ol>
</li><li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Related issue - handoff of control of user state</font></font></font></p>
<ol>
<li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Handling the registration and registration of index vectors
and data pointers</font></font></font></p>
</li><li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">C++ way</font></font></font></p>
</li><li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">C (and Fortran) way with registration callbacks at free</font></font></font></p>
</li><li>
<p><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Removing ambiguity in the “zero time use case” and whenever a free is allowed to lazy
in MPI that holds user state (so it can be released before MPI_Finalize).</font></font></font></p>
</li></ol>
</li></ol>
<p><br>
<br>
</p>
<ol start="4">
<li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Managing unexpected state in partitioned (and maybe persistent)
operations</font></font></font></p>
<ol>
<li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Elimination of PBUF_PREPARE in all partitioned considerations</font></font></font></p>
</li><li>
<p><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Considering to “generalize” point-to-point partitioned to enable a) persistence better;
b) buffer pools</font></font></font></p>
</li></ol>
</li></ol>
<p><br>
<br>
</p>
<ol start="5">
<li>
<p><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Streaming collectives</font></font></font></p>
</li><li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Other things we “owe” short term</font></font></font></p>
<ol>
<li>
<p><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">MPI_Parrived_any ticket — very useful with current partitioned point-to-point</font></font></font></p>
</li></ol>
</li><li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Document enhancements</font></font></font></p>
<ol>
<li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Revamping the collective chapter front-to-back (ask Puri
if he had some input on prior tries at this?)</font></font></font></p>
</li><li>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Making uniform the presentation of blocking, nonblocking,
persistent, and future (partitioned) collective</font></font></font></p>
</li><li>
<p><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Front matter needs a look for terms, definitions…</font></font></font></p>
</li></ol>
</li></ol>
<p style="margin-bottom: 0in"><br>
</p>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">---</font></font></font></p>
<p style="margin-bottom: 0in"><font color="#000000"><font face="Aptos, Aptos EmbeddedFont, Aptos MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont"><font size="3" style="font-size: 12pt">Running minutes will be captured and shared. Recording
whenever possible :-) </font></font></font></p>
<p style="line-height: 100%; margin-bottom: 0in"><br>
</p>
</div>
<br>
<p></p>
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