allow parallel execution

bonfus · Jan 27, 2017 · de08d04 · de08d04
1 parent 3e31903
commit de08d04
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/muesr/engines/LFCExt/LFCExt.c b/muesr/engines/LFCExt/LFCExt.c
@@ -425,7 +425,8 @@ static PyObject * py_lfcext_fields(PyObject *self, PyObject *args) {
   cont = (double *) PyArray_DATA(ocont);
   lor = (double *) PyArray_DATA(olor);
 
-
+  // long computation starts here. No python object is touched so free thread execution
+  Py_BEGIN_ALLOW_THREADS
   switch (icalc_type)
   {
     case 1:
@@ -441,6 +442,7 @@ static PyObject * py_lfcext_fields(PyObject *self, PyObject *args) {
         in_cell,r, nnn,rcont,num_atoms,nangles,cont,dip,lor);
 
   }
+  Py_END_ALLOW_THREADS
 
   if (in_positions != NULL){
       free(in_positions);