Which one is the latency with Open MPI ? Which version of Open MPI ?
You might want to use OMPI_MCA_btl=mx,self to see if it makes any
difference.
Thanks,
george.
On Jun 6, 2007, at 12:26 PM, Maestas, Christopher Daniel wrote:
> With 2 nodes using 1.1.7 with the patch we measured (using mpich-mx
> 1.2.7..4):
> 3.07us
>
> With mx 1.2.1-rc18 we measure:
> 3.69 us
> And with mpich-mx 1.2.7..4 we see:
> 3.20us
>
> Our Open MPI settings:
> ---
> # env | grep OMPI
> OMPI_MCA_pml=cm
> OMPI_MCA_mpi_keep_hostnames=1
> OMPI_MCA_oob_tcp_include=eth0
> OMPI_MCA_btl=mx,sm,self
>
> Does anyone know why the latency would be slightly higher using
> Open MPI
> versus MPICH-MX?
>
> Thanks,
> -cdm
>
>
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users
- application/pkcs7-signature attachment: smime.p7s
|
![[Flag]](../../../../../community/mirrors/flag-us.gif){kind=small}