[RegCNET] Running Parallel Version of RegCM3

[XUNQIANG BI]

Hi, Ashley:

The present Parallel Version of RegCM3 just works with MPI (MPICH, LAM MPI
or MPI library provided by computer vendor).

There is no problem to run it on your Shared Memory Parallel Computer 
SMPC. After MPI installed, you can use your computer as a distributed
memory computer.

On Fri, 12 Jan 2007, Ashley Watson wrote:

> Hi BI,
>
> I want to run parallel version of RegCM3 on my Shared Memory Parallel
> Computer SMPC.
>   I have 64-bit PGI compiler installled on it. My machine is:
>
> CPU type    AuthenticAMD
> Dual Core AMD Opteron(tm) Processor 885
> Number of CPUs    4(8)
>
> I want to know which type of parallel programming RegCM3 supports. Is it
> possible to run parallel version of RegCM3 using
> *PGHPF (Portland Group *High Performance Fortran compiler) ?

> http://www.tacc.utexas.edu/services/userguides/pgi/pgiws_ug/pgi32u02.htm#Heading11

I have read the webpage. In my opinion, -Mconcur Auto-parallelization 
Option is useless for the complicated code (like RegCM3).

I haven't read the PGHPF User's Guide. I guess, the RegCM3 code doesn't
support PGHPF.
>
>
> Or is it necessary to have MPI installed on machine to run parallel version
> of RegCM3?
Yes, MPI is required.

> Finally what about running parallel code using OpenMP?

The present RegCM3 code doesn't support OpenMP.

Best regards,
Xunqiang Bi

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   Dr. Xunqiang Bi         email:bixq at ictp.it
   Earth System Physics 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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