diff --git a/homework_2/Makefile b/homework_2/Makefile
index 7bae436..6d51bfb 100644
--- a/homework_2/Makefile
+++ b/homework_2/Makefile
@@ -45,18 +45,18 @@ DEP_DIR         := $(BUILD_DIR)/.dep
 
 # ========== Compiler settings ==========
 # Compiler flags for debug and release
-DEB_CFLAGS      := -DDEBUG -g3 -Wall -Wextra -std=c11 #-fopenmp
-REL_CFLAGS      := -Wall -Wextra -O3 -std=c11 #-fopenmp
-DEB_CXXFLAGS    := -DDEBUG -g3 -Wall -Wextra -std=c++17 #-fopenmp
-REL_CXXFLAGS    := -Wall -Wextra -O3 -std=c++17 #-fopenmp
+DEB_CFLAGS      := -DDEBUG -g3 -Wall -Wextra -std=c11 -fopenmp
+REL_CFLAGS      := -Wall -Wextra -O3 -std=c11 -fopenmp
+DEB_CXXFLAGS    := -DDEBUG -g3 -Wall -Wextra -std=c++17 -fopenmp
+REL_CXXFLAGS    := -Wall -Wextra -O3 -std=c++17 -fopenmp
 
 # Pre-defines
 # PRE_DEFS := MYCAB=1729 SUPER_MODE
-PRE_DEFS        := #_GLIBCXX_PARALLEL
+PRE_DEFS        := _GLIBCXX_PARALLEL
 
 # ============== Linker settings ==============
 # Linker flags (example: -pthread -lm)
-LDFLAGS         := -pthread # -fopenmp
+LDFLAGS         := -pthread -fopenmp
 
 # Map output file
 MAP_FILE        := output.map
diff --git a/homework_2/hpc/btN1P4T4Q24.sh b/homework_2/hpc/btN1P4T4Q24.sh
index 823193e..cc26e1e 100644
--- a/homework_2/hpc/btN1P4T4Q24.sh
+++ b/homework_2/hpc/btN1P4T4Q24.sh
@@ -10,7 +10,8 @@
 #   $> sbatch <this file>
 #
 # NOTE:
-#   First compile with
+#   First compile in aristotel with
+#   $> module load gcc/9.2.0 openmpi/4.0.3
 #   $> make -j hpc-build
 #
 
diff --git a/homework_2/include/distsort.hpp b/homework_2/include/distsort.hpp
index 680c515..d2ce369 100644
--- a/homework_2/include/distsort.hpp
+++ b/homework_2/include/distsort.hpp
@@ -12,7 +12,7 @@
 
 #include <vector>
 #include <algorithm>
-//#include <parallel/algorithm>
+#include <parallel/algorithm>
 #include <cmath>
 #include <cstdint>
 #if !defined DEBUG
@@ -162,10 +162,10 @@ template<typename RangeT>
 void fullSort(RangeT& data, bool ascending) noexcept {
     // Use introsort from stdlib++ here, unless ... __gnu_parallel
     if (ascending) {
-        std::sort(data.begin(), data.end(), std::less<>());
+        __gnu_parallel::sort(data.begin(), data.end(), std::less<>());
     }
     else {
-        std::sort(data.begin(), data.end(), std::greater<>());
+        __gnu_parallel::sort(data.begin(), data.end(), std::greater<>());
     }
 }
 
diff --git a/homework_2/include/utils.hpp b/homework_2/include/utils.hpp
index 19e2566..657f276 100644
--- a/homework_2/include/utils.hpp
+++ b/homework_2/include/utils.hpp
@@ -357,32 +357,13 @@ private:
 };
 
 /*!
- * Utility high level function to forward a function call to std::invoke and measure
+ * Utility high level function like to forward a function call and measure
  * the excecution time
- *
- * @tparam Func     The function type
- * @tparam Args     The argument
- * @param func
- * @param args
- * @return
  */
-
-
 #define timeCall(Tim, Func, ...)    \
-Tim.start();                        \
-Func(__VA_ARGS__);                  \
-Tim.stop();                         \
-
-
-//template <typename Ret, typename Func, typename... Args>
-//auto timeCall_r(Ret& ret, Func&& func, Args&&... args) {
-//    Timing timer;
-//
-//    timer.start();
-//    ret = std::invoke(std::forward<Func>(func), std::forward<Args>(args)...);
-//    timer.stop();
-//
-//    return timer.dt();
-//}
+    Tim.start();                     \
+    Func(__VA_ARGS__);               \
+    Tim.stop();                      \
+
 
 #endif /* UTILS_HPP_ */