<HTML>
<HEAD>
<TITLE>Re: [Pw_forum] nsfd</TITLE>
</HEAD>
<BODY>
<FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'>Hi Axel,<BR>
<BR>
Thank you! <BR>
Honestly, I am ignorant in this area, and I am trying to pick up little by little. <BR>
<BR>
Trinh<BR>
<BR>
P.S. I am sorry, I don’t know why I was haunted by the word “NSF”. :-). Paolo pointed out, but I kept repeating it. <BR>
<BR>
<BR>
<BR>
<BR>
On 7/17/09 7:49 PM, "Axel Kohlmeyer" <<a href="akohlmey@cmm.chem.upenn.edu">akohlmey@cmm.chem.upenn.edu</a>> wrote:<BR>
<BR>
</SPAN></FONT><BLOCKQUOTE><FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'>On Fri, 2009-07-17 at 19:00 -0700, Vo, Trinh (388C) wrote:<BR>
> Hi Paolo,<BR>
><BR>
> Thank you for your message. <BR>
><BR>
> I understand now (hope it is correct). Since we do not have Parallel<BR>
> File system on our cluster, all I/O via the network are used. One<BR>
> option now is probably to write directly on local scratch disk to<BR>
> avoid NSF. (I do not like this option very much). In your opinion,<BR>
> is it possible to add the Parallel File System to an existing cluster?<BR>
<BR>
yes. but it is an administrative nightmare. if you still<BR>
confuse NFS with NSF, then you should not get into it.<BR>
regardless, using a local scratch is _much_ better and<BR>
needs to additional configuration.<BR>
<BR>
cheers,<BR>
axel.<BR>
<BR>
> <BR>
><BR>
> Trinh <BR>
><BR>
><BR>
> On 7/17/09 2:32 AM, "Paolo Giannozzi" <<a href="giannozz@democritos.it">giannozz@democritos.it</a>> wrote:<BR>
><BR>
> On Jul 17, 2009, at 2:47 , Vo, Trinh (388C) wrote:<BR>
> > I usually saw lines of ‘nsfd’ appear on the ‘Command’<BR>
> column. What<BR>
> > ‘nsfd’ means?<BR>
> ><BR>
> "National Science Foundation daemon". It checks how you are<BR>
> spending the<BR>
> taxpayer's money, terminates your NSF grant if you are wasting<BR>
> it :-)<BR>
> <BR>
> Seriously: it is "nfsd", it stands for "network file system<BR>
> daemon",<BR>
> it means that<BR>
> you are performing heavy I/O via the network, using the nfs<BR>
> software.<BR>
> This is something you should avoid as much as possible.<BR>
> <BR>
> Paolo<BR>
> ---<BR>
> Paolo Giannozzi, Dept of Physics, University of Udine<BR>
> via delle Scienze 208, 33100 Udine, Italy<BR>
> Phone +39-0432-558216, fax +39-0432-558222<BR>
> <BR>
> <BR>
> <BR>
> _______________________________________________<BR>
> Pw_forum mailing list<BR>
> <a href="Pw_forum@pwscf.org">Pw_forum@pwscf.org</a><BR>
> <a href="http://www.democritos.it/mailman/listinfo/pw_forum">http://www.democritos.it/mailman/listinfo/pw_forum</a><BR>
> <BR>
> _______________________________________________<BR>
> Pw_forum mailing list<BR>
> <a href="Pw_forum@pwscf.org">Pw_forum@pwscf.org</a><BR>
> <a href="http://www.democritos.it/mailman/listinfo/pw_forum">http://www.democritos.it/mailman/listinfo/pw_forum</a><BR>
<BR>
--<BR>
=======================================================================<BR>
Axel Kohlmeyer <a href="akohlmey@cmm.chem.upenn.edu">akohlmey@cmm.chem.upenn.edu</a> <a href="http://www.cmm.upenn.edu">http://www.cmm.upenn.edu</a><BR>
Center for Molecular Modeling -- University of Pennsylvania<BR>
Department of Chemistry, 231 S.34th Street, Philadelphia, PA 19104-6323<BR>
tel: 1-215-898-1582, fax: 1-215-573-6233, office-tel: 1-215-898-5425<BR>
=======================================================================<BR>
If you make something idiot-proof, the universe creates a better idiot.<BR>
<BR>
_______________________________________________<BR>
Pw_forum mailing list<BR>
<a href="Pw_forum@pwscf.org">Pw_forum@pwscf.org</a><BR>
<a href="http://www.democritos.it/mailman/listinfo/pw_forum">http://www.democritos.it/mailman/listinfo/pw_forum</a><BR>
<BR>
</SPAN></FONT></BLOCKQUOTE>
</BODY>
</HTML>