Re: Pathscale/PGI Optimisation Options

[Barry Smith <bsmith@xxxxxxxxxxx>]

   It would be great if we could collect this kind of information;  
unfortunately
the PETSc team doesn't have time to try the many combinations. If anyone
has determined good options for particular machines we'd love to add
them to the PETSc website.

   Barry

On Jan 8, 2008, at 9:05 AM, Timothy Stitt wrote:

> Hi all,
>
> I am just curious if anyone has experimented with the various
> optimisation options available with the PGI/Pathscale compilers and  
> can
> suggest a set of parameters for either compiler which maximise the
> performance of the final PETSc build.
>
> In the past I typically use the default optimisation settings provided
> by  PETSc out of the box. The target platform is a Cray XT series  
> machine.
>
> Thanks in advance,
>
> Tim.