[Paraview] Running ParaView with MPI

[Berk Geveci]

ParaView doesn't make any calls to require system resources nor
does it ever ask to be run a certain processor (it can't anyway,
there is no such standard MPI call). Therefore, it will use whatever
the operating system and/or the MPI library gives it. Of course,
unless you are doing some expansive computation, there is no reason
why ParaView should use all the processor time available. It will
idle until it is asked to compute something. This might be true
even if you are interacting with an object since, when using hardware
accelerated rendering, the graphics processor will take the
actual load.


On Fri, 2003-02-07 at 15:13, Steven Coorpender wrote:
> I am running ParaView with MPICH v1.2.5 on a 2-node cluster (each node is a dual processor Xeon 2.2GHz running RedHat 8.0-smp--total of 4 processors in cluster). When I run ParaView with "mpirun -np 4 ParaView", my system monitor shows a maximum of 50% cpu usage on each node, giving 25% to each ParaView process. If I run Paraview with "mpirun -np 8 ParaView", I still get 25% for each process, but 4 processes on each node, and a maximum of 100% total cpu usage. Why won't ParaView use more than 25% of a cpu in one process, and why can I only get 50% usage with mpirun -np 4?