Hi Rajeev,<br>There's no doubt that process runs on all 3 machines.<br>I have tried cpi example and it prints the hostnames of 3 machines<br><br>mpiexec -l -n 3 <path to process><br>(the same path is available in all 3 machines)<br>
<br>Thank you<br>Waruna<br><br><br><div class="gmail_quote">2008/11/26 Rajeev Thakur <span dir="ltr"><<a href="mailto:thakur@mcs.anl.gov">thakur@mcs.anl.gov</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">Make sure the processes are actually running on the 3
machines. Try the cpi example in the examples directory. It prints out the
hostname. How are you running the job?</font></span></div>
<div dir="ltr" align="left"><span></span> </div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">Rajeev</font> </span></div><br>
<blockquote dir="ltr" style="border-left: 2px solid rgb(0, 0, 255); padding-left: 5px; margin-left: 5px; margin-right: 0px;">
<div dir="ltr" align="left" lang="en-us">
<hr>
<font face="Tahoma" size="2"><div class="Ih2E3d"><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>Waruna
Ranasinghe<br></div><b>Sent:</b> Wednesday, November 26, 2008 11:07 AM<div><div></div><div class="Wj3C7c"><br><b>To:</b>
<a href="mailto:mpich-discuss@mcs.anl.gov" target="_blank">mpich-discuss@mcs.anl.gov</a><br><b>Subject:</b> Re: [mpich-discuss] Clarification
needed on running processesonMPICH2<br></div></div></font><br></div><div><div></div><div class="Wj3C7c">
<div></div>Fedora 8 - MPICH2
<div>one machine with core-2-duo - master</div>
<div>two machines with one core</div>
<div>all together 3 nodes<br>
<div><br>
<div class="gmail_quote">2008/11/26 Rajeev Thakur <span dir="ltr"><<a href="mailto:thakur@mcs.anl.gov" target="_blank">thakur@mcs.anl.gov</a>></span><br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0px 0px 0px 0.8ex; padding-left: 1ex;">
<div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">What
kind of environment are you running on (how many machines, how many cores
each)? </font></span></div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">Rajeev</font></span></div><br>
<blockquote style="border-left: 2px solid rgb(0, 0, 255); padding-left: 5px; margin-left: 5px; margin-right: 0px;">
<div dir="ltr" align="left" lang="en-us">
<hr>
<font face="Tahoma" size="2">
<div><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>Waruna Ranasinghe<br></div><b>Sent:</b> Wednesday, November 26, 2008
2:15 AM
<div><br><b>To:</b> <a href="mailto:mpich-discuss@mcs.anl.gov" target="_blank">mpich-discuss@mcs.anl.gov</a><br></div><b>Subject:</b> Re:
[mpich-discuss] Clarification needed on running processes
onMPICH2<br></font><br></div>
<div>
<div></div>
<div>
<div></div>Hi Anthony,<br>I'm sorry, in this case I have to disagree with
you.<br>Because it is not max(t1,t2) but t1+t2 (this is the real result I
got)<br>I use fflush(stdout) also<br><br>What I think is that, Cluster
runs two programmes alternatively.<br>i.e. Process A runs for a while (say
t3 seconds) then process B for sometime and so on.<br>Therefore,
ultimately both the processes will run for t1+t2<br><br>Cluster:
MPICH2<br>Fedora 8<br><br>
<div class="gmail_quote">2008/11/26 Anthony Chan <span dir="ltr"><<a href="mailto:chan@mcs.anl.gov" target="_blank">chan@mcs.anl.gov</a>></span><br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>If
process A and B are launched by mpiexec, the time taken<br>by mpiexec
should be max(t1,t2) not t1 + t2. As Rajeev said,<br>calling
fflush(stdout) after each printf() is the fastest way<br>to get each
process's stdout printed to your console.<br><br>A.Chan<br>
<div>
<div></div>
<div>----- "Waruna Ranasinghe" <<a href="mailto:warunapww@gmail.com" target="_blank">warunapww@gmail.com</a>> wrote:<br><br>> Hi
Rajeev,<br>> Actually this is not what I'm talking about.<br>> Say
there are processes A and B<br>> Process A utilize 100% of the cpu
while it runs. The answer will<br>> appear in<br>> t1
seconds<br>> Process B also utilize 100% of the cpu while it runs.
The answer will<br>> appear<br>> in t2 seconds<br>><br>>
When I run both the process A and B at the same time, The both
answers<br>> will<br>> appear in t1 + t2 seconds. where as I want
to get the Process A's<br>> answer<br>> first. (Here Process A is
submitted before Process B)<br>><br>> Is there anything that I can
do to make this happen.<br>><br>> Thank You,<br>>
Waruna<br>><br>> 2008/11/26 Rajeev Thakur <<a href="mailto:thakur@mcs.anl.gov" target="_blank">thakur@mcs.anl.gov</a>><br>><br>> > If
you are refering to the output of "printf", you can try adding<br>>
an<br>> > fflush(stdout) after the printf. You don't have much
control over<br>> the order<br>> > in which it is printed from
different processes.<br>> ><br>> > Rajeev<br>>
><br>> > ------------------------------<br>> >
*From:* <a href="mailto:mpich-discuss-bounces@mcs.anl.gov" target="_blank">mpich-discuss-bounces@mcs.anl.gov</a> [mailto:<br>>
> <a href="mailto:mpich-discuss-bounces@mcs.anl.gov" target="_blank">mpich-discuss-bounces@mcs.anl.gov</a>] *On Behalf Of
*Waruna Ranasinghe<br>> > *Sent:* Tuesday, November 25, 2008 1:35
AM<br>> > *To:* <a href="mailto:mpich-discuss@mcs.anl.gov" target="_blank">mpich-discuss@mcs.anl.gov</a><br>> > *Subject:*
[mpich-discuss] Clarification needed on running processes<br>>
on<br>> > MPICH2<br>> ><br>> > Hi all,<br>> > I
submitted 3 processes at the same time using mpiexec. the
results<br>> of each<br>> > process appears only after all the
processes have finished. (I guess<br>> that<br>> > the way
mpich schedule it).<br>> > What if I want to get the result of the
process, which was submitted<br>> first,<br>> > first. (like
first in first out).<br>> ><br>> > I use MPICH2 cluster in
Fedora 8 (with mpd)<br>> ><br>> > Thank you.<br>> >
Waruna Ranasinghe<br>> ><br>>
><br></div></div></blockquote></div><br></div></div></blockquote></div></blockquote></div><br></div></div></div></div></blockquote></div>
</blockquote></div><br>