Changes between Version 45 and Version 46 of DataParallel/BenchmarkStatus


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Timestamp:
Nov 4, 2009 3:41:25 AM (4 years ago)
Author:
chak
Comment:

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  • DataParallel/BenchmarkStatus

    v45 v46  
    108108 
    109109The speedup relative to a sequential C program for !SumSq, DotP, and SMVM on both architectures is illustrated by [http://justtesting.org/post/85103645/these-graphs-summarise-the-performance-of-data two summary graphs.]  In all cases, the data parallel Haskell program outperforms the sequential C program by a large margin on 8 cores.  The gray curve is a parallel C program computing the dot product using pthreads.  It clearly shows that the two Quad-Core Xeon with 8x1 threads are memory-limited for this benchmark, and the C code is barely any faster on 8 cores than the Haskell code. 
     110 
     111=== Regular, multidimensional arrays === 
     112 
     113First benchmark results for the multiplication of two dense matrices using `dph-seq` are in the attachment ''delayed-regular-arrays-Sep09''.