Poor matrix product performance
|Created on||Oct 29, 2005 21:09|
|Resolved on||Oct 30, 2005 11:50|
|Attachments||ipdd.sac, ipdd.f, matmul.sac|
I've compiled several standard linear algebra matrix products, using the transposed-right-argument algorithm, and array sizes of 400x400. On my AMD platform here, I get the following timings: Source code Compiler invocation User time ipdd.sac sac2c -O3 7.5 sec matmul.sac(demo)sac2c -O3 6.5 sec ipdd.f g77 1.69 sec ipdd.wif APL+Win interpreter 4.3 sec So, as you can see, sac remains far behind in performance here. I have not,as yet, made any attempt to examine the reasons for the poor performance.
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