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eigen/bench
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Gael Guennebaud c49d1fd2b5 add a partial LU bench in BTL
2009-06-04 18:16:54 +02:00
..
btl add a partial LU bench in BTL 2009-06-04 18:16:54 +02:00
basicbench.cxxlist Removed Column and Row in favor of Block 2008-03-12 18:10:52 +00:00
basicbenchmark.cpp add Cholesky and eigensolver benchmark 2008-07-08 17:20:17 +00:00
basicbenchmark.h typos in bench/ 2008-08-29 16:10:08 +00:00
bench_multi_compilers.sh Removed Column and Row in favor of Block 2008-03-12 18:10:52 +00:00
bench_reverse.cpp add bench_reverse, draft of a reverse vectorization for AltiVec, make 2009-02-06 13:28:55 +00:00
bench_sum.cpp add benchmark for sum 2008-06-23 11:03:27 +00:00
bench_unrolling add Cholesky and eigensolver benchmark 2008-07-08 17:20:17 +00:00
benchBlasGemm.cpp * updated benchmark files according to recent renamings 2008-07-27 11:39:47 +00:00
benchCholesky.cpp s/cholesky/llt in precompiled lib and BTL 2009-02-06 14:01:01 +00:00
benchEigenSolver.cpp * updated benchmark files according to recent renamings 2008-07-27 11:39:47 +00:00
benchmark_suite Make use of the LazyBit, introduce .lazy(), remove lazyProduct. 2008-03-31 16:20:06 +00:00
benchmark.cpp * updated benchmark files according to recent renamings 2008-07-27 11:39:47 +00:00
benchmarkSlice.cpp * updated benchmark files according to recent renamings 2008-07-27 11:39:47 +00:00
benchmarkX.cpp * updated benchmark files according to recent renamings 2008-07-27 11:39:47 +00:00
benchmarkXcwise.cpp * updated benchmark files according to recent renamings 2008-07-27 11:39:47 +00:00
BenchSparseUtil.h various updates in the (still messy) sparse benchmarks 2009-01-28 20:32:28 +00:00
BenchTimer.h remove sentence "Eigen itself is part of the KDE project." 2009-05-22 20:25:33 +02:00
BenchUtil.h typos in bench/ 2008-08-29 16:10:08 +00:00
benchVecAdd.cpp the big memory changes. the most important changes are: 2009-01-08 15:20:21 +00:00
README.txt * basic support for multicore CPU via a .evalOMP() which 2008-03-09 16:13:47 +00:00
sparse_cholesky.cpp * the Upper->UpperTriangular change 2008-12-20 13:36:12 +00:00
sparse_dense_product.cpp * complete the support of QVector via a QtAlignedMalloc header 2009-01-20 16:50:47 +00:00
sparse_lu.cpp some cleaning and doc in ParametrizedLine and HyperPlane 2008-10-25 00:08:52 +00:00
sparse_product.cpp various updates in the (still messy) sparse benchmarks 2009-01-28 20:32:28 +00:00
sparse_randomsetter.cpp sparse module: 2008-10-21 13:35:04 +00:00
sparse_setter.cpp bugfix in Map by Keir Mierle 2009-01-18 09:53:06 +00:00
sparse_transpose.cpp add/update some benchmark files used to test/compare sparse module features 2008-10-19 17:06:11 +00:00
sparse_trisolver.cpp * the Upper->UpperTriangular change 2008-12-20 13:36:12 +00:00
vdw_new.cpp the big Array/Cwise rework as discussed on the mailing list. The new API 2008-07-08 00:49:10 +00:00

README.txt 

This folder contains a couple of benchmark utities and Eigen benchmarks.

****************************
* bench_multi_compilers.sh *
****************************

This script allows to run a benchmark on a set of different compilers/compiler options.
It takes two arguments:
 - a file defining the list of the compilers with their options
 - the .cpp file of the benchmark

Examples:

$ ./bench_multi_compilers.sh basicbench.cxxlist basicbenchmark.cpp

    g++-4.1 -O3 -DNDEBUG -finline-limit=10000
    3d-3x3   /   4d-4x4   /   Xd-4x4   /   Xd-20x20   /
    0.271102   0.131416   0.422322   0.198633
    0.201658   0.102436   0.397566   0.207282

    g++-4.2 -O3 -DNDEBUG -finline-limit=10000
    3d-3x3   /   4d-4x4   /   Xd-4x4   /   Xd-20x20   /
    0.107805   0.0890579   0.30265   0.161843
    0.127157   0.0712581   0.278341   0.191029

    g++-4.3 -O3 -DNDEBUG -finline-limit=10000
    3d-3x3   /   4d-4x4   /   Xd-4x4   /   Xd-20x20   /
    0.134318   0.105291   0.3704   0.180966
    0.137703   0.0732472   0.31225   0.202204

    icpc -fast -DNDEBUG -fno-exceptions -no-inline-max-size
    3d-3x3   /   4d-4x4   /   Xd-4x4   /   Xd-20x20   /
    0.226145   0.0941319   0.371873   0.159433
    0.109302   0.0837538   0.328102   0.173891


$ ./bench_multi_compilers.sh ompbench.cxxlist ompbenchmark.cpp

    g++-4.2 -O3 -DNDEBUG -finline-limit=10000 -fopenmp
    double, fixed-size 4x4: 0.00165105s  0.0778739s
    double, 32x32: 0.0654769s 0.075289s  => x0.869674 (2)
    double, 128x128: 0.054148s 0.0419669s  => x1.29025 (2)
    double, 512x512: 0.913799s 0.428533s  => x2.13239 (2)
    double, 1024x1024: 14.5972s 9.3542s  => x1.5605 (2)

    icpc -fast -DNDEBUG -fno-exceptions -no-inline-max-size -openmp
    double, fixed-size 4x4: 0.000589848s  0.019949s
    double, 32x32: 0.0682781s 0.0449722s  => x1.51823 (2)
    double, 128x128: 0.0547509s 0.0435519s  => x1.25714 (2)
    double, 512x512: 0.829436s 0.424438s  => x1.9542 (2)
    double, 1024x1024: 14.5243s 10.7735s  => x1.34815 (2)