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765219aa51
* 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.
This folder contains a couple of benchmark utities and Eigen benchmarks.
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* bench_multi_compilers.sh *
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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)