Fixing segfault for non-GFX copies with SHOW_ITERATION=1 (#54)

src/TransferBench.cpp

@@ -595,9 +595,13 @@ void ExecuteTransfers(EnvVars const& ev,
             {
               double iterDurationMsec = t.first;
               double iterBandwidthGbs = (transfer->numBytesActual / 1.0E9) / iterDurationMsec * 1000.0f;
-              printf("      Iter %03d    | %7.3f GB/s | %8.3f ms | CUs:", t.second, iterBandwidthGbs, iterDurationMsec);
+              printf("      Iter %03d    | %7.3f GB/s | %8.3f ms |", t.second, iterBandwidthGbs, iterDurationMsec);
+              if (t.second - 1 < transfer->perIterationCUs.size())
+              {
+                printf(" CUs:");
                 for (auto x : transfer->perIterationCUs[t.second - 1])
                   printf(" %2d", x);
+              }
                 printf("\n");
             }
             printf("      StandardDev | %7.3f GB/s | %8.3f ms |\n", stdDevBw, stdDevTime);