finished MPI Histogram

HW3/cmake-build-debug/CMakeFiles/FindOpenMP/OpenMPTryFlag.c

@@ -0,0 +1,12 @@
+
+#include <omp.h>
+int main(void) {
+#ifdef _OPENMP
+  omp_get_max_threads();
+  return 0;
+#elif defined(__HIP_DEVICE_COMPILE__)
+  return 0;
+#else
+  breaks_on_purpose
+#endif
+}