CCL:G: Gaussian03 %mem and %nproc



Dear Serder,
What OS are you using on your laptop? Unless you pay more, the Windows version of Gaussian is serial, so you cannot run more than one processor. Their web page says it can use up to 2GB of memory. Have you tried setting %mem=1800MB? I've found that on the 32-bit Linux version of G03 specifying 2GB results in an error (I think Gaussian defines the 2GB limit in words).
Best regards,
Jamin

On Sun, Feb 28, 2010 at 10:40 AM, Serdar Bado?lu sbadoglu:-:gazi.edu.tr <owner-chemistry==Ìl.net> wrote:

Sent to CCL by: "Serdar Bado?lu" [sbadoglu,gazi.edu.tr]
Hi all,

I have a laptop with Intel Core Duo 2.53 GHz CPU, and 4 GB RAM. When at
home, I use my laptop to do some calculations with Gaussian 03. Recently I
have decided to use higher Link0 settings and I need to ask some questions
now. I can use:

%mem=1GB
%nproc=1

But if I use bigger values then I get error message. So; here are my
questions:

1- Although I have 4 GB physical memory, why I get error message if I
entered %mem value greater than 1 GB?
2- Since I have a core duo cpu, shouldn't I use %nproc=2? But then I get
error message again.

Thanks for any help.


--
Serdar BADOGLU
http://docs.google.com/View?id=dckx8v2c_29g9scr9fv



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--
Jamin L Krinsky, Ph.D.
Molecular Graphics and Computation Facility
175 Tan Hall, University of California, Berkeley, CA 94720
jamink==¾rkeley.edu, 510-643-0616
http://glab.cchem.berkeley.edu">http://glab.cchem.berkeley.edu