fix MPI IO repetions for non zero ranks

Author: JuliaRS

src_c/IMB_cpu_exploit.c

@@ -89,7 +89,7 @@ in: target_secs: desired runtime (about) of the current call
     static float a[SIZE][SIZE], x[SIZE], y[SIZE];
     double t1,t2;
     static int Nrep, target_reps;
-    int i,j,repeat;
+    int i, j, repeat;
 
     if (target_secs <= 0.) {
         return;
@@ -142,4 +142,3 @@ in: target_secs: desired runtime (about) of the current call
         }
     }
 }
-

src_cpp/helpers/original_benchmark.h

@@ -177,12 +177,13 @@ class OriginalBenchmark : public Benchmark {
                 glob.iter = c_info.n_lens - 1;
             }
 #ifdef MPIIO
-            if(c_info.w_rank == 0 &&
-               do_nonblocking_) {
+            if(do_nonblocking_) {
                 double MFlops = IMB_cpu_exploit_reworked(TARGET_CPU_SECS, 1);
-                printf("\n\n# For nonblocking benchmarks:\n\n");
-                printf("# Function CPU_Exploit obtains an undisturbed\n");
-                printf("# performance of %7.2f MFlops\n",MFlops);
+                if (c_info.w_rank == 0) {
+                    printf("\n\n# For nonblocking benchmarks:\n\n");
+                    printf("# Function CPU_Exploit obtains an undisturbed\n");
+                    printf("# performance of %7.2f MFlops\n",MFlops);
+                }
                 do_nonblocking_ = 0;
             }
 #endif