[Beowulf] cluster sharing

[amjad ali]

Hi all,

I am usually running my parallel jobs on the university cluster of several
hundred nodes (accessible to all). So often I observe very different total
MPI_Wtime value when I run my program (even of same problem size) on
different occasion.

How should I make a reasonable performance measurement in such a case? Is it
fine to get speedup/measurements on such a shared cluster?


Thanks.
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