Remove MemoryHierarchy Bench again and revert to old structure.

src/sum.c

@@ -0,0 +1,49 @@
+/*
+ * =======================================================================================
+ *
+ *      Author:   Jan Eitzinger (je), jan.treibig@gmail.com
+ *      Copyright (c) 2019 RRZE, University Erlangen-Nuremberg
+ *
+ *      Permission is hereby granted, free of charge, to any person obtaining a copy
+ *      of this software and associated documentation files (the "Software"), to deal
+ *      in the Software without restriction, including without limitation the rights
+ *      to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *      copies of the Software, and to permit persons to whom the Software is
+ *      furnished to do so, subject to the following conditions:
+ *
+ *      The above copyright notice and this permission notice shall be included in all
+ *      copies or substantial portions of the Software.
+ *
+ *      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *      IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *      FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *      AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *      LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *      OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *      SOFTWARE.
+ *
+ * =======================================================================================
+ */
+
+#include <timing.h>
+
+double sum(
+        double * restrict a,
+        int N
+        )
+{
+    double S, E;
+    double sum = 0.0;
+
+    S = getTimeStamp();
+#pragma omp parallel for reduction(+:sum)
+    for (int i=0; i<N; i++) {
+        sum += a[i];
+    }
+    E = getTimeStamp();
+
+    /* make the compiler think this makes actually sense */
+    a[10] = sum;
+
+    return E-S;
+}