Hello everyone,I'm trying to investigate the paralellization of an algorithm
with OpenMPI on a distributed computers' network. In the network there are one
Master PC and 24 Computing Node PCs. I'm quite a newbie in this field. However
i achieved installing the OpenMPI and compiling and running my first parallel
codes on this parallel platform.
Now here is my question.The algorithm in my concern is a simple one. Such that:
in the outer "for loop" the algorithm repeats until a stopping conditon is met.
The Master PC should do this outer loop. And in the "inner loop" a local search
procedure is performed in paralel by the 24 Computing Nodes. That means i
actually want to paralellize the inner loop since it is the most time cosuming
part of my algorithm. I have already managed to code this part since i know the
total number of steps of the "inner loop" and hence i was able to paralellize
the inner "for loop" over the distributed pcs. Now here is the problem. I want
the Master PC repeats the main loop until a stopping criterion is met, but at
each step it should distribute the inner loop over 24 compute nodes. And i dont
have any idea how should i do this. It appears to me i should build a code
something like, i have to make each compute node wait a signal from the master
code and reapeat the inner loop over and over...
I hope i could make it clear with my poor English. I would appreciate if anyone
can help me or at least give the broad methodology.
Best regars to all.
Doctor Keceee
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