ready for parralization

makefile

@@ -1,7 +1,9 @@
 
 # Compiler and flags
 CC := g++
-CXXFLAGS := -std=c++14 -Wall -Iinclude
+CXXFLAGS := -std=c++14 -Wall -Iinclude -O3 -march=native -fopenmp
+LDFLAGS  := -fopenmp
+
 
 # Directories
 SRC_DIR := src
@@ -20,19 +22,50 @@ SRCS := $(shell find $(SRC_DIR) -name '*.cpp')
 # === Convert src/foo/bar.cpp → obj/foo/bar.o ===
 OBJS := $(patsubst $(SRC_DIR)/%.cpp,$(OBJ_DIR)/%.o,$(SRCS))
 
+
+# === OpenMP runtime configuration (override-able) ===
+OMP_PROC_BIND   ?= close        # close|spread|master
+OMP_PLACES      ?= cores        # cores|threads|sockets
+OMP_MAX_LEVELS  ?= 1            # 1 = no nested teams; set 2+ to allow nesting
+OMP_THREADS     ?= 16           # e.g. "16" or "8,4" for nested (outer,inner)
+OMP_DYNAMIC     ?= true         # true/false: let runtime adjust threads
+OMP_DISPLAY_ENV ?= FALSE        # TRUE to print runtime config at startup
+
+
+
 # === Default Target ===
 all: $(TARGET)
 
 # === Linking final executable ===
 $(TARGET): $(OBJS)
 	@mkdir -p $(dir $@)
-	$(CXX) $(CXXFLAGS) -o $@ $^
+	$(CXX) $(CXXFLAGS) -o $@ $^ $(LDFLAGS)
 
 # === Compiling source files to object files ===
 $(OBJ_DIR)/%.o: $(SRC_DIR)/%.cpp
 	@mkdir -p $(dir $@)
 	$(CXX) $(CXXFLAGS) -c $< -o $@
 
+# === Run with OpenMP env set only for the run ===
+.PHONY: run
+run: $(TARGET)
+	OMP_PROC_BIND=$(OMP_PROC_BIND) \
+	OMP_PLACES=$(OMP_PLACES) \
+	OMP_MAX_ACTIVE_LEVELS=$(OMP_MAX_LEVELS) \
+	OMP_NUM_THREADS="$(OMP_THREADS)" \
+	OMP_DYNAMIC=$(OMP_DYNAMIC) \
+	OMP_DISPLAY_ENV=$(OMP_DISPLAY_ENV) \
+	./$(TARGET)
+
+# Handy presets
+.PHONY: run-single
+run-single: ## Single-level parallel (good default)
+	$(MAKE) run OMP_MAX_LEVELS=1 OMP_THREADS=16 OMP_PROC_BIND=close OMP_PLACES=cores
+
+.PHONY: run-nested
+run-nested: ## Two-level nested (outer,inner), adjust to your cores
+	$(MAKE) run OMP_MAX_LEVELS=2 OMP_THREADS="4,8" OMP_PROC_BIND=close OMP_PLACES=cores
+
 # Clean up
 .PHONY: clean
 clean:
@@ -43,4 +76,5 @@ clean:
 info:
 	@echo "Source files: $(SRCS)"
 	@echo "Object files: $(OBJS)"
-	@echo "CXXFLAGS: $(CXXFLAGS)"
+	@echo "CXXFLAGS: $(CXXFLAGS)"
+	@echo "LDFLAGS:   $(LDFLAGS)"