Add examples/skip.py

Author: oleksandr-pavlyk

python/examples/skip.py

@@ -0,0 +1,71 @@
+import sys
+
+import cuda.cccl.headers as headers
+import cuda.core.experimental as core
+import cuda.nvbench as nvbench
+
+
+def make_sleep_kernel():
+    """JITs sleep_kernel(seconds)"""
+    src = r"""
+#include <cuda/std/cstdint>
+#include <cuda/std/chrono>
+
+// Each launched thread just sleeps for `seconds`.
+__global__ void sleep_kernel(double seconds) {
+  namespace chrono = ::cuda::std::chrono;
+  using hr_clock = chrono::high_resolution_clock;
+
+  auto duration = static_cast<cuda::std::int64_t>(seconds * 1e9);
+  const auto ns = chrono::nanoseconds(duration);
+
+  const auto start = hr_clock::now();
+  const auto finish = start + ns;
+
+  auto now = hr_clock::now();
+  while (now < finish)
+  {
+    now = hr_clock::now();
+  }
+}
+"""
+    incl = headers.get_include_paths()
+    opts = core.ProgramOptions(include_path=str(incl.libcudacxx))
+    prog = core.Program(src, code_type="c++", options=opts)
+    mod = prog.compile("cubin", name_expressions=("sleep_kernel",))
+    return mod.get_kernel("sleep_kernel")
+
+
+def runtime_skip(state: nvbench.State):
+    duration = state.getFloat64("Duration")
+    kramble = state.getString("Kramble")
+
+    # Skip Baz benchmarks with 0.8 ms duration
+    if kramble == "Baz" and duration < 0.8e-3:
+        state.skip("Short 'Baz' benchmarks are skipped")
+        return
+
+    # Skip Foo benchmark with > 0.3 ms duration
+    if kramble == "Foo" and duration > 0.3e-3:
+        state.skip("Long 'Foo' benchmarks are skipped")
+        return
+
+    krn = make_sleep_kernel()
+    launch_cfg = core.LaunchConfig(grid=1, block=1, shmem_size=0)
+
+    def launcher(launch: nvbench.Launch):
+        dev = core.Device()
+        dev.set_current()
+
+        s = dev.create_stream(launch.getStream())
+        core.launch(s, launch_cfg, krn, duration)
+
+    state.exec(launcher)
+
+
+if __name__ == "__main__":
+    b = nvbench.register(runtime_skip)
+    b.addFloat64Axis("Duration", [1e-4 + k * 0.25e-3 for k in range(5)])
+    b.addStringAxis("Kramble", ["Foo", "Bar", "Baz"])
+
+    nvbench.run_all_benchmarks(sys.argv)