1 files changed, 4 insertions, 2 deletions

diff --git a/task_host_utilities.cu b/task_host_utilities.cu
index 9bb95aa..1f76080 100644
--- a/task_host_utilities.cu
+++ b/task_host_utilities.cu
@@ -4,6 +4,7 @@
 // been copied and heavily modified for use in the gpu-microbench project.
 #include <cuda_runtime.h>
 #include <errno.h>
+#include <sched.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
@@ -191,8 +192,8 @@ static void InternalReadGPUNanoseconds(int cuda_device, double *cpu_time,
   if (!CheckCUDAError(cudaMemcpy(gpu_time, device_time, sizeof(device_time),
     cudaMemcpyDeviceToHost))) goto out;
   max_error = (cpu_end - cpu_start) / 2.0;
-  fprintf(stderr, "Time synchronized to a maximum error of +/- %f us.\n",
-    max_error * (1000.0 * 1000.0));
+  fprintf(stderr, "Time synchronized to a maximum error of +/- %f us on CPU%d.\n",
+    max_error * (1000.0 * 1000.0), sched_getcpu());
 out:
   cudaFree(device_time);
   cudaFree((void*)start_barrier);
@@ -200,6 +201,7 @@ out:
   cudaFree((void*)ready_barrier);
 }
 
+// Returns 0 on success, 1 on error
 int GetHostDeviceTimeOffset(int cuda_device, double *host_seconds,
   uint64_t *gpu_nanoseconds) {
   uint64_t *shared_gpu_time = NULL;