David, On Sun, 2011-02-27 at 09:48 -0500, dsimcha wrote: [ . . . ] > Can you please re-run the benchmark to make sure that this isn't just a > one-time anomaly? I can't seem to make the parallel matrix inversion > run slower than serial on my hardware, even with ridiculous tuning > parameters that I was almost sure would bottleneck the thing on the task > queue. Also, all the other benchmarks actually look pretty good.
Sadly the result is consistent :-(
|> matrixInversion
Inverted a 256 x 256 matrix serially in 60 milliseconds.
Inverted a 256 x 256 matrix using 4 cores in 76 milliseconds.
506 anglides:/home/Checkouts/Git/Git/D_StdParallelism/benchmarks
|> matrixInversion
Inverted a 256 x 256 matrix serially in 58 milliseconds.
Inverted a 256 x 256 matrix using 4 cores in 84 milliseconds.
506 anglides:/home/Checkouts/Git/Git/D_StdParallelism/benchmarks
|> matrixInversion
Inverted a 256 x 256 matrix serially in 61 milliseconds.
Inverted a 256 x 256 matrix using 4 cores in 65 milliseconds.
506 anglides:/home/Checkouts/Git/Git/D_StdParallelism/benchmarks
|> matrixInversion
Inverted a 256 x 256 matrix serially in 58 milliseconds.
Inverted a 256 x 256 matrix using 4 cores in 76 milliseconds.
506 anglides:/home/Checkouts/Git/Git/D_StdParallelism/benchmarks
|> matrixInversion
Inverted a 256 x 256 matrix serially in 59 milliseconds.
Inverted a 256 x 256 matrix using 4 cores in 84 milliseconds.
506 anglides:/home/Checkouts/Git/Git/D_StdParallelism/benchmarks
|> matrixInversion
Inverted a 256 x 256 matrix serially in 58 milliseconds.
Inverted a 256 x 256 matrix using 4 cores in 84 milliseconds.
506 anglides:/home/Checkouts/Git/Git/D_StdParallelism/benchmarks
|> matrixInversion
Inverted a 256 x 256 matrix serially in 58 milliseconds.
Inverted a 256 x 256 matrix using 4 cores in 84 milliseconds.
506 anglides:/home/Checkouts/Git/Git/D_StdParallelism/benchmarks
|>
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