Dear all,
I have a question related to parallel programing and if you can give me some hints on how to deal with it, it would be really great.
I would like to run a small application on a supercompter of 128 CPUs. Unfortunately, on this machine only jobs which require 32 CPUs are allowed to run. My applications are, however, scalling only up to 16 CPUs. If I require 32 CPUs, the job will not run as I do not have enough data to fill the CPUs.
I think that maybe it is possible to submit, instead of a job on 32 CPUs, 2 jobs - each on 16 CPUs. This would mean that a master script (in MPI, probably) should ask at the begining for 32 CPUs, and then divide this partition into two smaller ones (of 16 CPUs), on each of them starting a different application (from a different directory).
As I have no experience with parallel programing I do not know to do this. Is it possible to give some hints on how to do it. (I do not expect someone to do the work in my place, but I need some hints to get start with, as possible keyword to use, etc).
Many thanks for any answer.
With all the best wishes,
Eduard