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// Copyright (c) Microsoft Corporation.
// SPDX-License-Identifier: Apache-2.0
// DeepSpeed Team
#ifndef __TIMER_H__
#define __TIMER_H__
#include <cuda_runtime.h>
#include <chrono>
#include "cuda.h"
class GPUTimer {
cudaEvent_t start, stop;
public:
GPUTimer()
{
cudaEventCreate(&start);
cudaEventCreate(&stop);
}
~GPUTimer()
{
cudaEventDestroy(start);
cudaEventDestroy(stop);
}
inline void Record() { cudaEventRecord(start); }
inline void Elapsed(float& time_elapsed)
{
cudaEventRecord(stop);
cudaEventSynchronize(stop);
cudaEventElapsedTime(&time_elapsed, start, stop);
}
};
class CPUTimer {
std::chrono::high_resolution_clock::time_point start;
public:
CPUTimer() : start(std::chrono::high_resolution_clock::now()) {}
inline void Reset() { start = std::chrono::high_resolution_clock::now(); }
inline float Elapsed()
{
auto temp = start;
start = std::chrono::high_resolution_clock::now();
return (float)(std::chrono::duration_cast<std::chrono::microseconds>(start - temp).count() /
1e3);
}
};
#endif
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