<DIV>Dear Lorenzo</DIV>
<DIV> Thanks for your help, but what shoul I do to solve the problem ? Can you tell the specific course ? </DIV>
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<DIV>Message: 2<BR>>Date: Mon, 07 Sep 2009 15:24:32 +0200<BR>>From: "Lorenzo Paulatto" <paulatto@sissa.it><BR>>Subject: Re: [Pw_forum] pw.x running but nothing happens<BR>>To: "PWSCF Forum" <pw_forum@pwscf.org><BR>>Message-ID: <op.uzv166ska8x26q@paulax><BR>>Content-Type: text/plain; charset=utf-8; format=flowed; delsp=yes<BR>><BR>>In data 07 settembre 2009 alle ore 13:27:31, wangqj1 <wangqj1@126.com> ha <BR>>scritto:<BR>>> I don't know why only display 8 CPUs while I use 2 nodes (16 CPUs)<BR>><BR>>top only displays process on the node it's running.<BR>><BR>>> Untill now the job only has 2 iterations form 2:00 PM today ,it is so <BR>>> slowly . How can I solve this problem ?<BR>><BR>><BR>>Probably the network connection is slow, use k-point parallelisation <BR>>(pools) among different nodes, it is not as efficient as g-space <BR>>parallelization, but it requires much less communication.<BR>><BR>><BR>>regards<BR>><BR>><BR>>-- <BR>>Lorenzo Paulatto<BR>>SISSA & DEMOCRITOS (Trieste)<BR>>phone: +39 040 3787 511<BR>>skype: paulatz<BR>>www: http://people.sissa.it/~paulatto/<BR>><BR>> *** save italian brains ***<BR>> http://saveitalianbrains.wordpress.com/<BR></DIV>
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