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<DIV dir=ltr align=left><SPAN class=718025205-09032010><FONT color=#0000ff
size=2 face=Arial>If you are using the default nemesis channel in MPICH 1.2.1, I
believe the eager/rendezvous threshold is set by the value
MPIDI_CH3_EAGER_MAX_MSG_SIZE in
src/mpid/ch3/channels/nemesis/include/mpidi_ch3_post.h. You can change it there
and then run make clean, make, make install in the top-level directory. Not sure
if it can be changed via an env variable.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=718025205-09032010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=718025205-09032010><FONT color=#0000ff
size=2 face=Arial>Rajeev</FONT></SPAN></DIV><BR>
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<FONT size=2 face=Tahoma><B>From:</B> mpich-discuss-bounces@mcs.anl.gov
[mailto:mpich-discuss-bounces@mcs.anl.gov] <B>On Behalf Of </B>Bin
Bao<BR><B>Sent:</B> Monday, March 08, 2010 7:05 PM<BR><B>To:</B>
mpich-discuss@mcs.anl.gov<BR><B>Subject:</B> Re: [mpich-discuss] A runtime
environment variable tocontroleager/rendezvous protocol?<BR></FONT><BR></DIV>
<DIV></DIV>I am actually using MPICH2 1.2.1, and don't have MPICH installed
yet. I was looking for the environment variable that gives me the control to
the eager/rendezvous protocol, but only found "MPICH_LONGVLONGTHRESH" in the
MPICH document, "Installation and User's Guide to MPICH, version
1.2.7".<BR><BR>Bin<BR><BR>
<DIV class=gmail_quote>On Mon, Mar 8, 2010 at 6:03 PM, Rajeev Thakur <SPAN
dir=ltr><<A
href="mailto:thakur@mcs.anl.gov">thakur@mcs.anl.gov</A>></SPAN> wrote:<BR>
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<DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2 face=Arial>Which
version of MPICH are you using and what device?</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2
face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2
face=Arial>Rajeev</FONT></SPAN></DIV><BR>
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style="BORDER-LEFT: rgb(0,0,255) 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
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<FONT size=2 face=Tahoma><B>From:</B> <A
href="mailto:mpich-discuss-bounces@mcs.anl.gov"
target=_blank>mpich-discuss-bounces@mcs.anl.gov</A> [mailto:<A
href="mailto:mpich-discuss-bounces@mcs.anl.gov"
target=_blank>mpich-discuss-bounces@mcs.anl.gov</A>] <B>On Behalf Of
</B>Bin Bao<BR><B>Sent:</B> Monday, March 08, 2010 2:41 PM<BR><B>To:</B>
<A href="mailto:mpich-discuss@mcs.anl.gov"
target=_blank>mpich-discuss@mcs.anl.gov</A><BR><B>Subject:</B>
[mpich-discuss] A runtime environment variable to controleager/rendezvous
protocol?<BR></FONT><BR></DIV>
<DIV class=im>
<DIV></DIV>Hi,<BR><BR>Is there a runtime environment variable in MPICH2
that can be used to control when to switch from eager protocol to
rendezvous protocol? It seems that "MPICH LONGVLONGTHRESH" in MPICH can do
this.<BR><BR>Bin<BR></DIV></BLOCKQUOTE></DIV><BR>_______________________________________________<BR>mpich-discuss
mailing list<BR><A
href="mailto:mpich-discuss@mcs.anl.gov">mpich-discuss@mcs.anl.gov</A><BR><A
href="https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss"
target=_blank>https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss</A><BR><BR></BLOCKQUOTE></DIV><BR></BLOCKQUOTE></BODY></HTML>