<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi all,<div><br></div><div>Sorry for the late notice - our next MPI-3 Tools TelCon is</div><div>scheduled for next Monday 2/21 at the usual time 8am</div><div>PST, 11m EST, 5pm MEZ. I know that this is a holiday</div><div>for some of you (including us at LLNL), but moving it</div><div>would probably cause more problems than it would</div><div>help and I didn't want to cancel since we only have</div><div>a few weeks before we have to have the MPIT document</div><div>ready for a first reading.</div><div><br></div><div>If you can't make it, please feel free to send comments</div><div>to the email list, for the rest Jeff has setup a Webex</div><div>as usual:</div><div><br></div><div><a class="ext-link" href="https://cisco.webex.com/ciscosales/j.php?ED=160088522&UID=0&PW=NMzcyMGEyNjNi&RT=MiMxMQ==">https://cisco.webex.com/ciscosales/j.php?ED=160088522&UID=0&PW=NMzcyMGEyNjNi&RT=MiMxMQ%3D%3D</a></div><div>Password: tools</div><div><br></div><div>The information is also on the Wiki.</div><div><br></div><div>The main point on the agenda is to go over the feedback</div><div>on the MPIT draft from the last forum meeting and to</div><div>discuss how to proceed.</div><div><br></div><div>The open issues are (as far as I can see):</div><div><br></div><div>- Naming: people wanted us to move into the MPI namespace</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- Which prefix should we use?</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- How do we distinguish the semantics?</div><div><br></div><div>- Types: people didn't like a separate type system</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- Can we use the MPI type systems?</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- Can we address this otherwise?</div><div><br></div><div>- Threading: what are the implications on threading?</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- Do we need to specify thread support?</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- What is the impact on sessions?</div><div><br></div><div>- What are the semantics of MPIT_Init if called before MPI_Init?</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- Do all processes have to call it and what does this mean?</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- How do we handle the case of an implementation that</div><div><span class="Apple-tab-span" style="white-space:pre"> </span> uses fork in MPI_Init to spawn rank processes?</div><div><br></div><div>- Smaller issues</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- Inclusion of BOOLEAN in the type system and implications for C</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- How to handle variables that are strings?</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- Connection between timer variables and values from MPI_Wtime</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- Overlap/Distinction of MPI and MPIT return codes</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- How do we deal with 30 character limit on names?</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- Clarification on NULL buffer passed to routines returning strings</div><div><br></div><div>If I missed anything, please add it to the list - also, any further</div><div>feedback on the text would be great! The draft is on the tools</div><div>Wiki and on ticket #266.</div><div><br></div><div>Thanks!</div><div><br></div><div>Martin</div><div><br></div><div><br><div>
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div>________________________________________________________________________</div><div>Martin Schulz, <a href="mailto:schulzm@llnl.gov">schulzm@llnl.gov</a>, <a href="http://people.llnl.gov/schulzm">http://people.llnl.gov/schulzm</a></div><div>CASC @ Lawrence Livermore National Laboratory, Livermore, USA</div><div><br></div></div></div><br class="Apple-interchange-newline">
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