Added CPU parallelization to make CPU integration and boundconds faster

src/utils/CMakeLists.txt

@@ -7,5 +7,6 @@ add_compile_options(-Wall -Wextra -Werror -Wdouble-promotion -Wfloat-conversion
 add_compile_options(-mavx)
 
 ## Compile
+find_package(OpenMP)
 add_library(astaroth_utils STATIC config_loader.c memory.c verification.c modelsolver.c)
-target_link_libraries(astaroth_utils PRIVATE astaroth_core m)
+target_link_libraries(astaroth_utils PRIVATE astaroth_core m OpenMP::OpenMP_C)

src/utils/memory.c

@@ -96,6 +96,7 @@ acMeshApplyPeriodicBounds(AcMesh* mesh)
         const int ny_max = info.int_params[AC_ny_max];
         const int nz_max = info.int_params[AC_nz_max];
 
+#pragma omp parallel for
         for (int k_dst = start.z; k_dst < end.z; ++k_dst) {
             for (int j_dst = start.y; j_dst < end.y; ++j_dst) {
                 for (int i_dst = start.x; i_dst < end.x; ++i_dst) {

src/utils/modelsolver.c

@@ -924,8 +924,8 @@ acModelIntegrateStep(AcMesh mesh, const AcReal dt)
         // Boundconds
         acMeshApplyPeriodicBounds(&mesh);
 
-        // Alpha step
+// Alpha step
-        //#pragma omp parallel for
+#pragma omp parallel for
         for (int k = nz_min; k < nz_max; ++k) {
             for (int j = ny_min; j < ny_max; ++j) {
                 for (int i = nx_min; i < nx_max; ++i) {
@@ -934,8 +934,8 @@ acModelIntegrateStep(AcMesh mesh, const AcReal dt)
             }
         }
 
-        // Beta step
+// Beta step
-        //#pragma omp parallel for
+#pragma omp parallel for
         for (int k = nz_min; k < nz_max; ++k) {
             for (int j = ny_min; j < ny_max; ++j) {
                 for (int i = nx_min; i < nx_max; ++i) {