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<DIV dir=ltr align=left><SPAN class=676300122-05122008><FONT face=Arial
color=#0000ff size=2>Hi,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=676300122-05122008><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=676300122-05122008><FONT face=Arial
color=#0000ff size=2>I'd like to review this proposal. Let's consider the
following scenario:</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=676300122-05122008><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=676300122-05122008><FONT face=Arial
color=#0000ff size=2>- In the MPI_Isend, MPI maps the send buffer into the
address space of the receiving process.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=676300122-05122008><FONT face=Arial
color=#0000ff size=2>- In the matching MPI_Recv, the receiving process makes a
copy of the mapped send buffer into the receive buffer.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=676300122-05122008><FONT face=Arial
color=#0000ff size=2>- Once the copy is complete, the send buffer is mapped back
into the sender address space during the wait/test call.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=676300122-05122008><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=676300122-05122008><FONT face=Arial
color=#0000ff size=2>What will happen one tries to access the send buffer in
between?</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=676300122-05122008><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=676300122-05122008><FONT face=Arial
color=#0000ff size=2>Best regards.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=676300122-05122008><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=676300122-05122008><FONT face=Arial
color=#0000ff size=2>Alexander</FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> mpi-22-bounces@lists.mpi-forum.org
[mailto:mpi-22-bounces@lists.mpi-forum.org] <B>On Behalf Of </B>Erez
Haba<BR><B>Sent:</B> Friday, December 05, 2008 10:48 PM<BR><B>To:</B> MPI
2.2<BR><B>Subject:</B> [Mpi-22] please review - Send Buffer Access (ticket
#45)<BR></FONT><BR></DIV>
<DIV></DIV><FONT face="Calibri, sans-serif" size=2>
<DIV>This proposal has passed 1<FONT size=1><SUP>st</SUP></FONT> voting and
needs reviewers. We need 3 <U>volunteers</U> to sign-off on this proposal,
plus the 3 chapter authors to sign-off on the text.</DIV>
<DIV> </DIV>
<DIV>The Chapter Authors for</DIV>
<DIV> </DIV>
<DIV>Chapter 3: Point-to-Point Communication</DIV>
<DIV>Chapter 5: Collective Communication</DIV>
<DIV>Chapter 11: One-Sided Communication</DIV>
<DIV> </DIV>
<DIV>Please add a comment to the ticket saying that you reviewed the proposal,
or please send me your comments.</DIV>
<DIV> </DIV>
<DIV>Send Buffer Access: <A
href="https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/45"><FONT
color=#0000ff><U>https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/45</U></FONT></A></DIV>
<DIV> </DIV>
<DIV>Thanks,</DIV>
<DIV>.Erez</DIV>
<DIV> </DIV></FONT><pre>---------------------------------------------------------------------
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