Remove NUM_THREADS in Makefiles

buildsystem/Makefile.comp.cobra

@@ -7,10 +7,4 @@ CPV      =  $(CPP)
 else
 CFLAGS_VECTOR =
 CPV      =  $(CPP)
-endif
-
-ifeq (NUM_THREADS,$(findstring NUM_THREADS,$(CONFIGVARS)))
-OPTIMIZE +=  -fopenmp
-else
-OPTIMIZE +=  -Wno-unknown-pragmas
-endif
+endif
\ No newline at end of file

buildsystem/Makefile.comp.cobraopenmpi

@@ -7,9 +7,3 @@ else
 CFLAGS_VECTOR =
 CPV      =  $(CPP)
 endif
-
-ifeq (NUM_THREADS,$(findstring NUM_THREADS,$(CONFIGVARS)))
-OPTIMIZE +=  -qopenmp
-else
-OPTIMIZE +=  -Wno-unknown-pragmas
-endif

buildsystem/Makefile.comp.freya

@@ -7,10 +7,4 @@ CPV      =  $(CPP)
 else
 CFLAGS_VECTOR =
 CPV      =  $(CPP)
-endif
-
-ifeq (NUM_THREADS,$(findstring NUM_THREADS,$(CONFIGVARS)))
-OPTIMIZE +=  -fopenmp
-else
-OPTIMIZE +=  -Wno-unknown-pragmas
-endif
+endif
\ No newline at end of file

buildsystem/Makefile.comp.freyaopenmpi

@@ -8,9 +8,3 @@ else
 CFLAGS_VECTOR =
 CPV      =  $(CPP)
 endif
-
-ifeq (NUM_THREADS,$(findstring NUM_THREADS,$(CONFIGVARS)))
-OPTIMIZE +=  -fopenmp
-else
-OPTIMIZE +=  -Wno-unknown-pragmas
-endif

buildsystem/Makefile.comp.gcc

@@ -8,9 +8,3 @@ else
 CFLAGS_VECTOR =
 CPV      =  $(CPP)
 endif
-
-ifeq (NUM_THREADS,$(findstring NUM_THREADS,$(CONFIGVARS)))
-OPTIMIZE +=  -fopenmp
-else
-OPTIMIZE +=  -Wno-unknown-pragmas
-endif

buildsystem/Makefile.comp.gcc-paranoia

@@ -11,10 +11,4 @@ CPV      =  $(CPP)
 else
 CFLAGS_VECTOR =
 CPV      =  $(CPP)
-endif
-
-ifeq (NUM_THREADS,$(findstring NUM_THREADS,$(CONFIGVARS)))
-OPTIMIZE +=  -fopenmp
-else
-OPTIMIZE +=  -Wno-unknown-pragmas
-endif
+endif
\ No newline at end of file

buildsystem/Makefile.comp.ravenopenmpi

@@ -6,10 +6,4 @@ CPV      =  $(CPP)
 else
 CFLAGS_VECTOR =
 CPV      =  $(CPP)
-endif
-
-ifeq (NUM_THREADS,$(findstring NUM_THREADS,$(CONFIGVARS)))
-OPTIMIZE +=  -qopenmp
-else
-OPTIMIZE +=  -Wno-unknown-pragmas
-endif
+endif
\ No newline at end of file

buildsystem/Makefile.comp.supermuc-ng

@@ -8,10 +8,4 @@ CPV      =  $(CPP)
 else
 CFLAGS_VECTOR = 
 CPV      =  $(CPP)
-endif
-
-ifeq (NUM_THREADS,$(findstring NUM_THREADS,$(CONFIGVARS)))
-OPTIMIZE +=  -fopenmp
-else
-OPTIMIZE +=  -Wno-unknown-pragmas
-endif
+endif
\ No newline at end of file

buildsystem/Makefile.comp.supermuc-ng-gcc

@@ -8,10 +8,4 @@ CPV      =  $(CPP)
 else
 CFLAGS_VECTOR = 
 CPV      =  $(CPP)
-endif
-
-ifeq (NUM_THREADS,$(findstring NUM_THREADS,$(CONFIGVARS)))
-OPTIMIZE +=  -fopenmp
-else
-OPTIMIZE +=  -Wno-unknown-pragmas
-endif
+endif
\ No newline at end of file

buildsystem/Makefile.comp.supermuc-ng-openmpi

@@ -10,8 +10,3 @@ CFLAGS_VECTOR =
 CPV      =  $(CPP)
 endif
 
-ifeq (NUM_THREADS,$(findstring NUM_THREADS,$(CONFIGVARS)))
-OPTIMIZE +=  -fopenmp
-else
-OPTIMIZE +=  -Wno-unknown-pragmas
-endif

src/pm/pm_periodic.cc

@@ -61,9 +61,6 @@
  * The non-periodic dimension is selected via the GRAVITY_TALLBOX flag. Also in this case, arbitrarily stretched boxes can
  * be used, and one can use PM_ZOOM_OPTIMIZED and/or FFT_COLUMN_BASED if desired.
  *
- * Much of the code is multi-threaded, so there should be some speed-up if OpenMP is used with NUM_THREADS > 1, but the
- * benefit may be limited because the data transfer steps (which weigh in quite heavily) are not accelerated by this.
- *
  * If eight times the particle load per processor exceeds 2^31 ~ 2 billion, one should activate NUMPART_PER_TASK_LARGE.
  * The code will check this condition and terminate if this is violated, so there should hopefully be no severe risk
  * to accidentally forget this.