Dear Paolo<br>tahnks for your Ref.<br>But i think there is bug in Q.E., When i run pw.x, CPUs work for 29 sec but time given in output file is 6 sec.<br>Thanks again for your answer <br>Mohsen Modaresi<br> <br><br><div class="gmail_quote">
On Thu, Apr 29, 2010 at 2:21 PM, Paolo Giannozzi <span dir="ltr"><<a href="mailto:giannozz@democritos.it">giannozz@democritos.it</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im">mohsen modaresi wrote:<br>
<br>
> When i run parallel (With MPICH) version with 4 core,<br>
</div>> in output file i see this "total time until now 6.06 sec." it take<br>
> but if i use my watch29 sec to run. What is the problem?<br>
<div class="im">> another problem:<br>
> If i use MPICH with 1 core it takes only 17 sec (on my watch) which is<br>
> smaller than 29, Why?<br>
<br>
</div>See Sec.3, "Understanding parallelization", and sec.6.4,<br>
"Parallelization issues", of the user guide.<br>
<div class="im"><br>
P.<br>
--<br>
Paolo Giannozzi, Democritos and University of Udine, Italy<br>
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