[RegCNET] RegCM3 on 64-bit linux

[Richard Anyah]

Hi Nazrul,
Is your OS also 64-bit, or just the processors?
If so, did you use the default netcdf and udunits libs which come with the
regcm-tarred package.
Or do you enforce some compiler options to override the bit mismatch?
Richard
> 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
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> _______________________________________________
>> RegCNET mailing list
>> RegCNET at lists.ictp.it
>> https://lists.ictp.it/mailman/listinfo/regcnet
> ------- End of Original Message -------
>