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Loop benchmarks summary


The below table shows median performance of Blitz++ on 21 loop kernels, relative to the best native Fortran compiler with typical optimization switches (-O3, -Ofast):

Platform Compiler Out-of-cache In-cache
Cray T3EKAI C++95.7%98.1%
HPC-160KAI C++100.2%97.5%
Origin 2000KAI C++88.1%79.8%
Origin 2000SGI C++ 7.388.1%97.1%
Pentium IIegcs98.4%79.6%
RS 6000KAI C++93.5%97.3%
UltraSPARCKAI C++91.1%79.0%
DEC AlphaDECcxx98.0%69.0%


Benchmark results

Most of these benchmark results were measured on a 100 MHz RS/6000 using KAI C++ at +K3 -O3. Fortran examples were compiled with XL Fortran 77 and XL Fortran 90 using -O3.


tveldhui@acm.org
Mon Nov 27 13:37:57 EST 2000
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