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add runtime API to control multithreading

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This commit is contained in:
Gael Guennebaud
2010-06-10 23:30:15 +02:00
parent 842b54fe80
commit 5b192930b6
3 changed files with 50 additions and 5 deletions
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3
bench/bench_gemm.cpp
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@@ -112,7 +112,8 @@ int main(int argc, char ** argv)
if(procs>1)
{
BenchTimer tmono;
omp_set_num_threads(1);
//omp_set_num_threads(1);
Eigen::setNbThreads(1);
BENCH(tmono, tries, rep, gemm(a,b,c));
std::cout << "eigen mono cpu " << tmono.best(CPU_TIMER)/rep << "s \t" << (double(m)*n*p*rep*2/tmono.best(CPU_TIMER))*1e-9 << " GFLOPS \t(" << tmono.total(CPU_TIMER) << "s)\n";
std::cout << "eigen mono real " << tmono.best(REAL_TIMER)/rep << "s \t" << (double(m)*n*p*rep*2/tmono.best(REAL_TIMER))*1e-9 << " GFLOPS \t(" << tmono.total(REAL_TIMER) << "s)\n";