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

[Elvedin Trnjanin]

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
>
>