Pathscale/PGI Optimisation Options

Barry Smith bsmith at
Tue Jan 8 16:27:20 CST 2008

    It would be great if we could collect this kind of information;  
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.


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.

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