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| author |  David Majnemer <majnemer@google.com> | 2017-02-27 09:10:41 -0800 |
|---|---|---|
| committer |  TensorFlower Gardener <gardener@tensorflow.org> | 2017-02-27 10:14:26 -0800 |
| commit | 8898e88d5b3014a14d269560fb2f928f68562f53 (patch) | |
| tree | 4f8ce88463017a098a5a638754af0ec333563e0b /tensorflow/stream_executor/host | |
| parent | 6e9d1c8afeb3f6f544a577652e0773181438bcea (diff) | |
Set the clock rate for the host accurately
We used CLOCKS_PER_SEC which is defined only in terms of the clock system call.
What we needed to use was the hardware clock rate.
Change: 148655561
Diffstat (limited to 'tensorflow/stream_executor/host')
| -rw-r--r-- | tensorflow/stream_executor/host/host_gpu_executor.cc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tensorflow/stream_executor/host/host_gpu_executor.cc b/tensorflow/stream_executor/host/host_gpu_executor.cc index 830bc9a681..259bd10238 100644 --- a/tensorflow/stream_executor/host/host_gpu_executor.cc +++ b/tensorflow/stream_executor/host/host_gpu_executor.cc @@ -19,6 +19,7 @@ limitations under the License. #include <string.h> +#include "tensorflow/core/platform/profile_utils/cpu_utils.h" #include "tensorflow/stream_executor/host/host_platform_id.h" #include "tensorflow/stream_executor/host/host_stream.h" #include "tensorflow/stream_executor/host/host_timer.h" @@ -190,7 +191,10 @@ DeviceDescription *HostExecutor::PopulateDeviceDescription() const { // doesn't result in thrashing or other badness? 4GiB chosen arbitrarily. builder.set_device_memory_size(static_cast<uint64>(4) * 1024 * 1024 * 1024); - builder.set_clock_rate_ghz(static_cast<float>(CLOCKS_PER_SEC) / 1e9); + builder.set_clock_rate_ghz( + static_cast<float>( + tensorflow::profile_utils::CpuUtils::GetCycleCounterFrequency()) / + 1e9); auto built = builder.Build(); return built.release(); |