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Timestamp:
Jun 14, 2014, 5:26:39 PM (5 years ago)
Author:
cameron
Message:

Formatting, PACT publication template

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1 edited

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  • docs/Working/re/avx2.tex

    r3868 r3870  
    135135
    136136As shown in Figure \ref{fig:AVXSpeedup} the reduction in
    137 instruction count was reflected in a significant speed-up
     137instruction count was reflected in a significant speedup
    138138in the bitstreams implementation in all cases except
    139 StarHeight.  However, the speed-up was
     139StarHeight.  However, the speedup was
    140140considerably less than expected. 
    141141The bitstreams code  on AVX2 has suffered from a considerable
     
    155155in the overhead cost of the Parabix transform.
    156156
     157Table \ref{Xfactors} shows the final performance results
     158showing the speedup factors achieved by the Parabix/AVX2 implementation
     159vs nrgrep and gre2p.
     160\begin{table}
     161\begin{center}
     162\begin{tabular}{|c|c|c|} \hline
     163\multirow{2}{*}{Expression} & \multicolumn{2}{c|}{Bitstream grep Speedup} \\ \cline{2-3}
     164& vs. nrgrep & vs. gre2p \\ \hline \hline
     165At & 3.5X & 34X \\ \hline
     166Date & 0.76X & 13X \\ \hline
     167Email & 9.5X & 28X \\ \hline
     168URIorEmail & 6.6X & 27X \\ \hline
     169HexBytes & 8.1X & 105X \\ \hline
     170StarHeight & 1.9X & 7.6X \\ \hline
     171\end{tabular}
     172\end{center}
     173\caption{Speedups Obtained}\label{Xfactors}
     174\end{table}
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