If one were to use CP across such a large number of processors, what algorithm is your best bet<br>for minimizing your electronic d.o.f., sd or cg<br><br><br><div><span class="gmail_quote">On 2/14/07, <b class="gmail_sendername">
Paolo Giannozzi</b> <<a href="mailto:giannozz@nest.sns.it">giannozz@nest.sns.it</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
On Feb 14, 2007, at 10:39 , Alain Allouche wrote:<br><br>> I wonder if somebody have the experience of PW codes<br>> running on highly parallel machines like in those of the DEISA<br>> supercomputing grid, are the codes like
pw.x supporting<br>> such an environment ?<br><br>they have to, since I am involved in a DEISA project that<br>will use pw.x :-) .Support for very large calculations with<br>pw.x is less mature than for the Car-Parrinello code, which
<br>on test run has reached 4000 processors or so. With PW<br>codes some work will be needed in order to perform really<br>large calculations (notably, reduction of nonscalable memory<br>usage and of nonparallel parts of the code) but it will be
<br>done.<br><br>Paolo<br>---<br>Paolo Giannozzi, Democritos and University of Udine, Italy<br><br><br>_______________________________________________<br>Pw_forum mailing list<br><a href="mailto:Pw_forum@pwscf.org">Pw_forum@pwscf.org
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