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765219aa51
eigen/bench
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Gael Guennebaud 765219aa51 Big API change in Cholesky module: 
* rename Cholesky to LLT
 * rename CholeskyWithoutSquareRoot to LDLT
 * rename MatrixBase::cholesky() to llt()
 * rename MatrixBase::choleskyNoSqrt() to ldlt()
 * make {LLT,LDLT}::solve() API consistent with other modules

Note that we are going to keep a source compatibility untill the next beta release.
E.g., the "old" Cholesky* classes, etc are still available for some time.
To be clear, Eigen beta2 should be (hopefully) source compatible with beta1,
and so beta2 will contain all the deprecated API of beta1. Those features marked
as deprecated will be removed in beta3 (or in the final 2.0 if there is no beta 3 !).

Also includes various updated in sparse Cholesky.
2008-10-13 15:53:27 +00:00
..
btl typos in bench/ 2008-08-29 16:10:08 +00:00
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_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 Big API change in Cholesky module: 2008-10-13 15:53:27 +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 Big API change in Cholesky module: 2008-10-13 15:53:27 +00:00
BenchTimer.h * updated benchmark files according to recent renamings 2008-07-27 11:39:47 +00:00
BenchUtil.h typos in bench/ 2008-08-29 16:10:08 +00:00
benchVecAdd.cpp renamed inverseProduct => solveTriangular 2008-08-09 20:06:25 +00:00
README.txt * basic support for multicore CPU via a .evalOMP() which 2008-03-09 16:13:47 +00:00
sparse_product.cpp Big API change in Cholesky module: 2008-10-13 15:53:27 +00:00
sparse_trisolver.cpp * updated benchmark files according to recent renamings 2008-07-27 11:39:47 +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)