[RegCNET] RegCM3 on 64-bit linux

[Dr. Md. Nazrul Islam]

Dear Bi and Anyah,

I do not know details about RegCM version and Machine platform. However I am 
using RegCM3 version of November 2004 in AMD-64 Linux and found excellect 
performance. I am also using PGI 4.1 in FEDORA Core 3. For same version of 
RegCM3, I simulate 20 years data continuously without any break using AMD-64 
machine whereas I found floating point error allmost once in each year in 32 
bit machine.

Nazrul

Dr. Md. Nazrul Islam
Associate Professor
Department of Physics
Bangladesh University of Engineering and Technology
Dhaka-1000, Bangladesh
http://www.buet.ac.bd/phy/nazrul.htm

Phone: 880 2 966 5650 (PABX)
FAX: 880 2 861 3026, 880 2 861 3046


---------- Original Message -----------
From: BI XUNQIANG <bixq at ictp.trieste.it>
To: Richard Anyah <anyah at cep.rutgers.edu>
Cc: regcnet at lists.ictp.it
Sent: Wed, 5 Apr 2006 15:38:27 +0200 (CEST)
Subject: Re: [RegCNET] RegCM3 on 64-bit linux

> Dear RegCMer:
> 
> On Tue, 4 Apr 2006, Richard Anyah wrote:
> 
> > I have been, unsucessfully, trying to run RegCM3 on a linux cluster with
> > AMD64-bit processors, and was wondering what the problem might be.
> >
> > I have built new netcdf and udunits libs on the 64-bit platform and able
> > to preproc Terrain. However, when I try to preproc ICBC, I get
> > segmentation fault error for SST and ICBC.
> 
> After the discussion with Richard and Baris, the above problem on 
> AMD64-bit can be solved by:
> 
> 1. using our beta version at:
>     http://www.ictp.trieste.it/~bixq/RegCM3_beta.APR2006.tar.gz
> 
>     This version solves the preprocessing problem at AMD64-bit and 
> SGI origin computer.
> 
> 2. Under Main directory, the code works with IFC 7.0 (and mayby also
>     IFC8.0 and IFC9.0), but it doesn't work with PGI5.1-6
>     For PGI5.2 and PGI6.2 compilers, it works in 32-bit mode and 
> using    the options, FC = pgf90 -tp=k8-32 -byteswapio -Ktrap=fp
> 
> By the way, from this beta version, we will only support FORTRAN 
> 90 compiler (FORTRAN 77 compiler doesn't work).
> 
> Best regards,
> Xunqiang Bi
> 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    Dr. Xunqiang Bi         email:bixq at ictp.it
>    Physics of Weather and Climate Group
>    The Abdus Salam ICTP
>    Strada Costiera, 11
>    P.O. BOX 586, 34100 Trieste, ITALY
>    Tel: +39-040-2240302  Fax: +39-040-2240449
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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------- End of Original Message -------