Dear Sir, Madam,
I want to measure the efficiency of the parallel program using domain
decomposition aproach
The efficiency (speedup=t(1)/t(p)) can be measured as the ratio of
executing time
on one processor to executing time on p processors.
I order to measure the time t(1) it is necessary to run the parallel
program
(formally decomposed into p subdomains) on one processor.
For example the problem decomposed into four subdomains
I am running on one node n1:
mpirun -c 4 n1 program_name
As we have 2 processors on one node I am not certain that
running the parallel program on one node the one or two processors are
used in fact.
Please indicate how to force that the problem can be run on one
processor only?
regards,
Slawomir Kubacki
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