[Pvfs2-users] strong and weak scaling non-contiguous parallel benchmark

[Nirmal Thacker]

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?

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 non-contiguous?

Nirmal Thacker