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b5e4b4ba31
Per PR review suggestion: - `cuda.parallel` - device-wide algorithms/Thrust - `cuda.cooperative` - Cooperative algorithsm/CUB - `cuda.bench` - Benchmarking/NVBench
90 lines
2.7 KiB
Python
90 lines
2.7 KiB
Python
# Copyright 2025 NVIDIA Corporation
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#
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# Licensed under the Apache License, Version 2.0 with the LLVM exception
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# (the "License"); you may not use this file except in compliance with
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# the License.
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#
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# You may obtain a copy of the License at
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#
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# http://llvm.org/foundation/relicensing/LICENSE.txt
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import sys
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import cuda.bench as bench
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import cuda.cccl.headers as headers
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import cuda.core.experimental as core
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def as_core_Stream(cs: bench.CudaStream) -> core.Stream:
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"Create view into native stream provided by NVBench"
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return core.Stream.from_handle(cs.addressof())
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def make_sleep_kernel():
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"""JITs sleep_kernel(seconds)"""
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src = r"""
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#include <cuda/std/cstdint>
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#include <cuda/std/chrono>
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// Each launched thread just sleeps for `seconds`.
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__global__ void sleep_kernel(double seconds) {
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namespace chrono = ::cuda::std::chrono;
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using hr_clock = chrono::high_resolution_clock;
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auto duration = static_cast<cuda::std::int64_t>(seconds * 1e9);
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const auto ns = chrono::nanoseconds(duration);
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const auto start = hr_clock::now();
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const auto finish = start + ns;
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auto now = hr_clock::now();
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while (now < finish)
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{
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now = hr_clock::now();
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}
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}
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"""
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incl = headers.get_include_paths()
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opts = core.ProgramOptions(include_path=str(incl.libcudacxx))
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prog = core.Program(src, code_type="c++", options=opts)
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mod = prog.compile("cubin", name_expressions=("sleep_kernel",))
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return mod.get_kernel("sleep_kernel")
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def runtime_skip(state: bench.State):
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duration = state.get_float64("Duration")
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kramble = state.get_string("Kramble")
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# Skip Baz benchmarks with 0.8 ms duration
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if kramble == "Baz" and duration < 0.8e-3:
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state.skip("Short 'Baz' benchmarks are skipped")
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return
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# Skip Foo benchmark with > 0.3 ms duration
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if kramble == "Foo" and duration > 0.3e-3:
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state.skip("Long 'Foo' benchmarks are skipped")
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return
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krn = make_sleep_kernel()
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launch_cfg = core.LaunchConfig(grid=1, block=1, shmem_size=0)
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def launcher(launch: bench.Launch):
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s = as_core_Stream(launch.get_stream())
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core.launch(s, launch_cfg, krn, duration)
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state.exec(launcher)
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if __name__ == "__main__":
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b = bench.register(runtime_skip)
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b.add_float64_axis("Duration", [1e-4 + k * 0.25e-3 for k in range(5)])
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b.add_string_axis("Kramble", ["Foo", "Bar", "Baz"])
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bench.run_all_benchmarks(sys.argv)
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