Nirmal Thacker wrote: > Hello, > > Would any of you be aware of a benchmark out there which performs both > strong scaling and weak scaling for non-contiguous/sequential accesses > parallel I/O? > *edit: contiguous/sequential accesses *not non-contig * > For eg, in IOR , the work per process/processor/node is constant. Hence > an increase in processes/processors/nodes will increase the total amount > of data written to the remote disk. This is how I have used IOR. And > this would classify as weak scaling. > > However I am looking for a benchmark which performs strong scaling > wherein the overall work is constant and irrespective of varying the > processes/processors/nodes. > > AFAIK IOR does not perform strong scaling. I have heard that the NAS > benchmarks perform strong scaling, but do they also perform weak scaling? > > Moreover are the accesses *[edit:]contiguous*? > > Nirmal Thacker > >
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