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use OpenMP with maximum number of threads by default

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we still honor OMP_NUM_THREADS, if present.
This commit is contained in:
Axel Kohlmeyer
2023-07-30 02:43:00 -04:00
parent e23176d633
commit 05c8d260d9
1 changed files with 13 additions and 0 deletions
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13
tools/lammps-gui/lammpsgui.cpp
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@ -39,6 +39,11 @@
#include "library.h"
#endif
#if defined(_OPENMP)
#include <cstdlib>
#include <omp.h>
#endif
// duplicate string
static char *mystrdup(const std::string &text)
{
@ -61,10 +66,18 @@ LammpsGui::LammpsGui(QWidget *parent, const char *filename) :
current_file.clear();
recent_files.clear();
#if defined(_OPENMP)
// use maximum number of available threads unless OMP_NUM_THREADS was set
auto nthreads = std::to_string(omp_get_max_threads());
setenv("OMP_NUM_THREADS", nthreads.c_str(), 0);
#endif
lammps_args.clear();
lammps_args.push_back(mystrdup("LAMMPS-GUI"));
lammps_args.push_back(mystrdup("-log"));
lammps_args.push_back(mystrdup("none"));
lammps_args.push_back(mystrdup("-suffix"));
lammps_args.push_back(mystrdup("omp"));
setWindowIcon(QIcon(":/lammps-icon-128x128.png"));
#if (__APPLE__)