generic-library/opencv
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Replaced most of the usages of parallel_for with that of parallel_for_.

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This should allow many algorithms to take advantage of more parallelization
technologies.
This commit is contained in:
Roman Donchenko
2013-05-30 18:44:33 +04:00
parent 37091b086c
commit 29b13ec1de
24 changed files with 232 additions and 352 deletions
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53
modules/ml/src/ann_mlp.cpp
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@@ -40,10 +40,6 @@
#include "precomp.hpp"
#ifdef HAVE_TBB
#include <tbb/tbb.h>
#endif
CvANN_MLP_TrainParams::CvANN_MLP_TrainParams()
{
term_crit = cvTermCriteria( CV_TERMCRIT_ITER + CV_TERMCRIT_EPS, 1000, 0.01 );
@@ -1022,7 +1018,7 @@ int CvANN_MLP::train_backprop( CvVectors x0, CvVectors u, const double* sw )
return iter;
}
struct rprop_loop {
struct rprop_loop : cv::ParallelLoopBody {
rprop_loop(const CvANN_MLP* _point, double**& _weights, int& _count, int& _ivcount, CvVectors* _x0,
int& _l_count, CvMat*& _layer_sizes, int& _ovcount, int& _max_count,
CvVectors* _u, const double*& _sw, double& _inv_count, CvMat*& _dEdw, int& _dcount0, double* _E, int _buf_sz)
@@ -1063,7 +1059,7 @@ struct rprop_loop {
int buf_sz;
void operator()( const cv::BlockedRange& range ) const
void operator()( const cv::Range& range ) const
{
double* buf_ptr;
double** x = 0;
@@ -1084,7 +1080,7 @@ struct rprop_loop {
buf_ptr += (df[i] - x[i])*2;
}
for(int si = range.begin(); si < range.end(); si++ )
for(int si = range.start; si < range.end; si++ )
{
if (si % dcount0 != 0) continue;
int n1, n2, k;
@@ -1170,36 +1166,33 @@ struct rprop_loop {
}
// backward pass, update dEdw
#ifdef HAVE_TBB
static tbb::spin_mutex mutex;
tbb::spin_mutex::scoped_lock lock;
#endif
static cv::Mutex mutex;
for(int i = l_count-1; i > 0; i-- )
{
n1 = layer_sizes->data.i[i-1]; n2 = layer_sizes->data.i[i];
cvInitMatHeader( &_df, dcount, n2, CV_64F, df[i] );
cvMul( grad1, &_df, grad1 );
#ifdef HAVE_TBB
lock.acquire(mutex);
#endif
cvInitMatHeader( &_dEdw, n1, n2, CV_64F, dEdw->data.db+(weights[i]-weights[0]) );
cvInitMatHeader( x1, dcount, n1, CV_64F, x[i-1] );
cvGEMM( x1, grad1, 1, &_dEdw, 1, &_dEdw, CV_GEMM_A_T );
// update bias part of dEdw
for( k = 0; k < dcount; k++ )
{
double* dst = _dEdw.data.db + n1*n2;
const double* src = grad1->data.db + k*n2;
for(int j = 0; j < n2; j++ )
dst[j] += src[j];
{
cv::AutoLock lock(mutex);
cvInitMatHeader( &_dEdw, n1, n2, CV_64F, dEdw->data.db+(weights[i]-weights[0]) );
cvInitMatHeader( x1, dcount, n1, CV_64F, x[i-1] );
cvGEMM( x1, grad1, 1, &_dEdw, 1, &_dEdw, CV_GEMM_A_T );
// update bias part of dEdw
for( k = 0; k < dcount; k++ )
{
double* dst = _dEdw.data.db + n1*n2;
const double* src = grad1->data.db + k*n2;
for(int j = 0; j < n2; j++ )
dst[j] += src[j];
}
if (i > 1)
cvInitMatHeader( &_w, n1, n2, CV_64F, weights[i] );
}
if (i > 1)
cvInitMatHeader( &_w, n1, n2, CV_64F, weights[i] );
#ifdef HAVE_TBB
lock.release();
#endif
cvInitMatHeader( grad2, dcount, n1, CV_64F, grad2->data.db );
if( i > 1 )
cvGEMM( grad1, &_w, 1, 0, 0, grad2, CV_GEMM_B_T );
@@ -1297,7 +1290,7 @@ int CvANN_MLP::train_rprop( CvVectors x0, CvVectors u, const double* sw )
double E = 0;
// first, iterate through all the samples and compute dEdw
cv::parallel_for(cv::BlockedRange(0, count),
cv::parallel_for_(cv::Range(0, count),
rprop_loop(this, weights, count, ivcount, &x0, l_count, layer_sizes,
ovcount, max_count, &u, sw, inv_count, dEdw, dcount0, &E, buf_sz)
);