Parallel Computing - query

[lawrencelaw]

Hi,

I have used the parallel computing on the pyrosim 2008 version and also executed it via the command prompt. I have noticed that the parallel computing using pyrosim is able to load all the cpu cores to 100% consistently while the command prompt method is loading the cpu cores with loads that varies 40 to 80%. I am trying to get the command prompt method to match the pyrosim parallel CFD run.

Would you be able to help in this matter?

The command prompt i used is as follow:-

mpiexec -n 5 fds5_mpi.exe filename.fds

Thank You
Best Regards
Lawrence Law

[Charlie Thornton]

How many meshes are in your simulation and how many CPUs does your computer have?

Here is the line that PyroSim uses to run MPI:

mpiexec -noprompt -port 52200 -priority 1:3 -channel ssm -n 5 fds5_mpi filename.fds

In particular, the "-channel ssm" flag might help your machine use memory a bit more efficiently compared to the default.

- Charlie