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* basic support for multicore CPU via a .evalOMP() which

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internaly uses OpenMP if enabled at compile time.
 * added a bench/ folder with a couple benchmarks and benchmark tools.
This commit is contained in:
Gael Guennebaud
2008-03-09 16:13:47 +00:00
parent f64311e07d
commit 9d9d81ad71
18 changed files with 514 additions and 2 deletions
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2
doc/Mainpage.dox
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@@ -75,7 +75,7 @@ Eigen is well tested with recent versions of GCC and ICC. Both GCC 4.2 and ICC g
For best performance, we recommend the following compilation flags:
<ul>
<li>\b GCC: \c -O3 \c -DNDEBUG \c -finline-limit=10000 \c -falign-functions=64 </li>
<li>\b GCC: \c -O3 \c -DNDEBUG \c -finline-limit=10000 </li>
<li>\b ICC: \c -O3 \c -DNDEBUG \c -xT \c -ipo \c -no-prec-div \c -no-inline-max-size </li>
</ul>

11
doc/bench_unrolling
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@@ -1,11 +0,0 @@
#!/bin/bash
# gcc : CXX="g++ -finline-limit=10000 -ftemplate-depth-2000 --param max-inline-recursive-depth=2000"
# icc : CXX="icpc -fast -no-inline-max-size -fno-exceptions"
for ((i=1; i<16; ++i)); do
echo "Matrix size: $i x $i :"
$CXX -O3 -I.. -DNDEBUG benchmark.cpp -DMATSIZE=$i -DEIGEN_UNROLLING_LIMIT_OPEQUAL=1024 -DEIGEN_UNROLLING_LIMIT_PRODUCT=25 -o benchmark && time ./benchmark >/dev/null
$CXX -O3 -I.. -DNDEBUG -finline-limit=10000 benchmark.cpp -DMATSIZE=$i -DEIGEN_DONT_USE_UNROLLED_LOOPS=1 -o benchmark && time ./benchmark >/dev/null
echo " "
done

31
doc/benchmark.cpp
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@@ -1,31 +0,0 @@
// g++ -O3 -DNDEBUG -DMATSIZE=<x> benchmark.cpp -o benchmark && time ./benchmark
#include <cstdlib>
#include <cmath>
#include <Eigen/Core>
#ifndef MATSIZE
#define MATSIZE 3
#endif
using namespace std;
USING_PART_OF_NAMESPACE_EIGEN
int main(int argc, char *argv[])
{
Matrix<double,MATSIZE,MATSIZE> I;
Matrix<double,MATSIZE,MATSIZE> m;
for(int i = 0; i < MATSIZE; i++)
for(int j = 0; j < MATSIZE; j++)
{
I(i,j) = (i==j);
m(i,j) = (i+MATSIZE*j);
}
asm("#begin");
for(int a = 0; a < 40000000; a++)
{
m = I + 0.00005 * (m + m*m);
}
asm("#end");
cout << m << endl;
return 0;
}

22
doc/benchmarkX.cpp
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@@ -1,22 +0,0 @@
// g++ -O3 -DNDEBUG benchmarkX.cpp -o benchmarkX && time ./benchmarkX
#include <Eigen/Core>
using namespace std;
USING_PART_OF_NAMESPACE_EIGEN
int main(int argc, char *argv[])
{
MatrixXd I = MatrixXd::identity(20,20);
MatrixXd m(20,20);
for(int i = 0; i < 20; i++) for(int j = 0; j < 20; j++)
{
m(i,j) = 0.1 * (i+20*j);
}
for(int a = 0; a < 1000000; a++)
{
m = I + 0.00005 * (m + m*m);
}
cout << m << endl;
return 0;
}

17
doc/benchmark_suite
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@@ -1,17 +0,0 @@
#!/bin/bash
echo "Fixed size 3x3, ColumnMajor, -DNDEBUG"
$CXX -O3 -I .. -DNDEBUG benchmark.cpp -o benchmark && time ./benchmark >/dev/null
echo "Fixed size 3x3, ColumnMajor, with asserts"
$CXX -O3 -I .. benchmark.cpp -o benchmark && time ./benchmark >/dev/null
echo "Fixed size 3x3, RowMajor, -DNDEBUG"
$CXX -O3 -I .. -DEIGEN_DEFAULT_TO_ROW_MAJOR -DNDEBUG benchmark.cpp -o benchmark && time ./benchmark >/dev/null
echo "Fixed size 3x3, RowMajor, with asserts"
$CXX -O3 -I .. -DEIGEN_DEFAULT_TO_ROW_MAJOR benchmark.cpp -o benchmark && time ./benchmark >/dev/null
echo "Dynamic size 20x20, ColumnMajor, -DNDEBUG"
$CXX -O3 -I .. -DNDEBUG benchmarkX.cpp -o benchmarkX && time ./benchmarkX >/dev/null
echo "Dynamic size 20x20, ColumnMajor, with asserts"
$CXX -O3 -I .. benchmarkX.cpp -o benchmarkX && time ./benchmarkX >/dev/null
echo "Dynamic size 20x20, RowMajor, -DNDEBUG"
$CXX -O3 -I .. -DEIGEN_DEFAULT_TO_ROW_MAJOR -DNDEBUG benchmarkX.cpp -o benchmarkX && time ./benchmarkX >/dev/null
echo "Dynamic size 20x20, RowMajor, with asserts"
$CXX -O3 -I .. -DEIGEN_DEFAULT_TO_ROW_MAJOR benchmarkX.cpp -o benchmarkX && time ./benchmarkX >/dev/null