[petsc-users] Pthread support

Alexander Goncharov alexvg77 at gmail.com
Mon Jul 23 22:13:47 CDT 2012


No, it did not fix it. Two instances 50% each.

thank you.


On Mon, 2012-07-23 at 22:04 -0500, Jed Brown wrote:
> On Mon, Jul 23, 2012 at 10:00 PM, Alexander Goncharov
> <alexvg77 at gmail.com> wrote:
>         thank you for a quick reply. If I run ex2 with -mat_type
>         seqaijpthread
>         -nthreads 4, everything runs fine. I see 400% utilization.
>         
>         The problem persists if I just start two instances of the ex2
>         from the
>         console without seqaijpthread/seqpthread options. Just two
>         single
>         processor jobs. They show up as two 50% jobs in the "top"
>         output and run
>         slower. I hope I made my problem more clear.
>         
> 
> Does -nthreads 1 fix it?




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