[petsc-users] Very poor speed up performance

[Satish Balay]

On Mon, 20 Dec 2010, Yongjun Chen wrote:

> Matt, Barry, thanks a lot for your reply! I will try mpich hydra firstly and
> see what I can get.

hydra is just the process manager.

Also --download-mpich uses a slightly older version - with
device=ch3:sock for portability and valgrind reasons [development]

You might want to install latest mpich manually with the defaut
device=ch3:nemsis and recheck..

satish