Re: [Condor-users] What is ch_p4

[Greg Thain <gthain@xxxxxxxxxxx>]

Junaid N. Sahibzada wrote:
> I am going to use MPI on condor.
>
> Can any one tell me what is ch_p4?
>
> the condor documentation says
>
> "The MPI universe in Condor currently supports MPICH versions 1.2.2, 
> 1.2.3, and 1.2.4 using the ch_p4 device"
>
> Regards

MPICH supports several different communications "devices", such as 
myrinet, infiniband and TCP.  the "ch_p4" device is the TCP "device". 
It is the usual device, unless you have special, high-speed 
interconnects between your machines.

-greg