Hi,
You can quite easily perform either strong or weak scaling studies
with IOR or noncontig by choosing the correct parameters to the
application during your sweep.
Rob
On Sep 22, 2008, at 3:14 PM, Nirmal Thacker wrote:
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
_______________________________________________
Pvfs2-users mailing list
[email protected]
http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
_______________________________________________
Pvfs2-users mailing list
[email protected]
http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
