[mpich-discuss] Why is my quad core slower than cluster

[zach]

Yes.
-03 option and mpicc compiler.

On 7/9/08, Elvedin Trnjanin <trnja001 at umn.edu> wrote:
> Are you using the same compiler and optimization options for both systems?
>
>
> zach wrote:
> > I am using a cluster.
> > Each pc has two cpus and they are Xeon. Each cpu has 4GB, i think red
> > hat is running.
> >
> > I also use a pc at home- quad core intel chip, 8gb ram, ubuntu.
> >
> > Both are using mpich.
> >
> > I have found that my home pc is only running about 1/3 the speed of
> > the cluster, and the number of processes (4) and code is the same.
> >
> > Can anyone tell me if this is typical, and why, or am I not optimizing
> > something properly?
> >
> > Thanks
> > Zach
> >
> >
> >
>
>