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// ----------------------------------------------------------------------------
// - Open3D: www.open3d.org -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.open3d.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
#include "open3d/core/ParallelFor.h"
#include <benchmark/benchmark.h>
#include <numeric>
#include <vector>
#ifdef BUILD_ISPC_MODULE
#include "ParallelFor_ispc.h"
#endif
namespace open3d {
namespace core {
void ParallelForScalar(benchmark::State& state, int size) {
std::vector<float> input(size);
std::vector<float> output(size);
std::iota(input.begin(), input.end(), 0.0f);
// Warmup.
{
core::ParallelFor(core::Device("CPU:0"), size, [&](int64_t idx) {
float x = input[idx];
float x2 = x * x;
output[idx] = x2;
});
}
for (auto _ : state) {
core::ParallelFor(core::Device("CPU:0"), size, [&](int64_t idx) {
float x = input[idx];
float x2 = x * x;
output[idx] = x2;
});
}
}
void ParallelForVectorized(benchmark::State& state, int size) {
std::vector<float> input(size);
std::vector<float> output(size);
std::iota(input.begin(), input.end(), 0.0f);
// Warmup.
{
core::ParallelFor(
core::Device("CPU:0"), size,
[&](int64_t idx) {
float x = input[idx];
float x2 = x * x;
output[idx] = x2;
},
OPEN3D_VECTORIZED(SquareKernel, input.data(), output.data()));
}
for (auto _ : state) {
core::ParallelFor(
core::Device("CPU:0"), size,
[&](int64_t idx) {
float x = input[idx];
float x2 = x * x;
output[idx] = x2;
},
OPEN3D_VECTORIZED(SquareKernel, input.data(), output.data()));
}
}
#define ENUM_BM_SIZE(FN) \
BENCHMARK_CAPTURE(FN, CPU##100, 100)->Unit(benchmark::kMicrosecond); \
BENCHMARK_CAPTURE(FN, CPU##1000, 1000)->Unit(benchmark::kMicrosecond); \
BENCHMARK_CAPTURE(FN, CPU##10000, 10000)->Unit(benchmark::kMicrosecond); \
BENCHMARK_CAPTURE(FN, CPU##100000, 100000)->Unit(benchmark::kMicrosecond); \
BENCHMARK_CAPTURE(FN, CPU##1000000, 1000000) \
->Unit(benchmark::kMicrosecond); \
BENCHMARK_CAPTURE(FN, CPU##10000000, 10000000) \
->Unit(benchmark::kMicrosecond); \
BENCHMARK_CAPTURE(FN, CPU##100000000, 100000000) \
->Unit(benchmark::kMicrosecond);
ENUM_BM_SIZE(ParallelForScalar)
ENUM_BM_SIZE(ParallelForVectorized)
} // namespace core
} // namespace open3d
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