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<P><SPAN class=078173211-25022008><FONT face=Arial><FONT color=#0000ff><FONT
size=2><SPAN
class=906190117-28022008>Hi </SPAN> everybody,</FONT></FONT></FONT></SPAN></P></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=078173211-25022008><SPAN class=906190117-28022008>Thank you for your time
today. It was a very good discussion. Here's what I captured (please add/modify
what I may have missed):</SPAN></SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=078173211-25022008><SPAN
class=906190117-28022008></SPAN></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=078173211-25022008><SPAN class=906190117-28022008>Present: Leonid Meyerguz
(Microsoft), Rich Graham (ORNL), Richard Barrett (ORNL), Torsten Hoefler (ISU),
Alexander Supalov (Intel)</SPAN></SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=078173211-25022008><SPAN
class=906190117-28022008></SPAN></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2>- Opens & introductions<SPAN
class=906190117-28022008> </SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN
class=906190117-28022008> </SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2>- Scope of the effort<SPAN
class=906190117-28022008> </SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> -
Rich</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> -
Minimum subset consistent with the rest of MPI, for performance/memory footprint
optimization</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> -
Danger of splitting MPI, hence against optional features in the
standard</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> -
Both blocking & nonblocking belong to the
core</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> -
Torsten</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> -
Some collectives may go into selectable
subsets</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> -
MPI_ANY_SOURCE considered harmful</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> -
Leonid</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> -
Flexible support for optional features, means for choosing and advertising level
of compliance/set of features</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> - See enclosed
email for Alexander's POV</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN
class=906190117-28022008></SPAN></FONT></FONT></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008>- General discussion
snapshots</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> - Support of
subsets: some or all? If some, possible linkage problems in static apps (or dead
calls). If all, where's the gain?</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> - Optional:
really optional (may be not present) or selectable (are present but may be
unused)?</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> - Performance
penalty for unused subsets: implementation matter or standard
choice?</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> - Portability
may be limited to certain class of applications (think FT, master-slave
runs)</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> - All we design
needs to be implementable, complexity needs to be
controlled</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> - An ability to
use certain set of subsets should not preclude pulling in other modules if
necessary</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> - Whatever we
do, it should not conflict with the ABI
efforts</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> - Need to stay
nice and be nicer wrt to the libraries (think threading) and keep things
simple</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN
class=906190117-28022008></SPAN></FONT></FONT></FONT></SPAN>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> - The
simplification argument, if put first, may not be liked by
some</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN
class=906190117-28022008></SPAN></FONT></FONT></FONT></SPAN> </DIV></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2>- Next steps</FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> - Please
comment on these minutes, and add/modify what I may have
missed</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> - I'll prepare
a couple of slides by next week summarizing our discussion so far; again, your
feedback will be most welcome</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078173211-25022008><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN class=906190117-28022008> - At the
meeting, it may be great to meet F2F briefly and discuss any
eventual loose ends before the presentation at the Forum; I'll see to
this</SPAN></FONT></FONT></FONT></SPAN></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=078173211-25022008></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=078173211-25022008>Best regards.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=078173211-25022008></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=078173211-25022008>Alexander</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=078173211-25022008></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=078173211-25022008>
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Alexander Supalov</SPAN></DIV>
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