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Add an option to set number of warmup iterations #27739

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Oct 1, 2020
Merged

Add an option to set number of warmup iterations #27739

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24 changes: 19 additions & 5 deletions paddle/fluid/inference/tests/api/tester_helper.h
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Original file line number Diff line number Diff line change
Expand Up @@ -65,6 +65,7 @@ DEFINE_bool(zero_copy, false, "Use ZeroCopy to speedup Feed/Fetch.");
DEFINE_bool(warmup, false,
"Use warmup to calculate elapsed_time more accurately. "
"To reduce CI time, it sets false in default.");
DEFINE_int32(warmup_iters, 1, "Number of batches to process during warmup.");

DEFINE_bool(enable_profile, false, "Turn on profiler for fluid");
DEFINE_int32(cpu_num_threads, 1, "Number of threads for each paddle instance.");
Expand Down Expand Up @@ -364,15 +365,28 @@ void PredictionWarmUp(PaddlePredictor *predictor,
if (FLAGS_zero_copy) {
ConvertPaddleTensorToZeroCopyTensor(predictor, inputs[0]);
}
outputs->resize(1);
int iterations = 1;
if (FLAGS_warmup_iters > 1)
iterations = std::min(FLAGS_warmup_iters, static_cast<int>(inputs.size()));
outputs->resize(iterations);
Timer warmup_timer;
warmup_timer.tic();
double elapsed_time = 0;
if (!FLAGS_zero_copy) {
predictor->Run(inputs[0], &(*outputs)[0], batch_size);
for (int i = 0; i < iterations; ++i) {
warmup_timer.tic();
predictor->Run(inputs[i], &(*outputs)[i], batch_size);
elapsed_time += warmup_timer.toc();
}
} else {
predictor->ZeroCopyRun();
for (int i = 0; i < iterations; ++i) {
warmup_timer.tic();
predictor->ZeroCopyRun();
elapsed_time += warmup_timer.toc();
}
}
PrintTime(batch_size, 1, num_threads, tid, warmup_timer.toc(), 1, data_type);
auto batch_latency = elapsed_time / iterations;
PrintTime(batch_size, 1, num_threads, tid, batch_latency, iterations,
data_type);
if (FLAGS_enable_profile) {
paddle::platform::ResetProfiler();
}
Expand Down