[Performance] Make _to_consolidated compatible with compile

ghstack-source-id: f1f6ed823acf899a2c45b391063ca8b483147256
Pull Request resolved: #1041

Author: vmoens

benchmarks/common/h2d_test.py

@@ -4,26 +4,39 @@
 # LICENSE file in the root directory of this source tree.
 
 import argparse
+from typing import Any
 
 import pytest
 import torch
 from packaging import version
 
-from tensordict import TensorDict
+from tensordict import tensorclass, TensorDict
+from tensordict.utils import logger as tensordict_logger
 
 TORCH_VERSION = version.parse(version.parse(torch.__version__).base_version)
 
 
-@pytest.fixture
-def td():
-    return TensorDict(
-        {
-            str(i): {str(j): torch.randn(16, 16, device="cpu") for j in range(16)}
-            for i in range(16)
-        },
-        batch_size=[16],
-        device="cpu",
-    )
+@tensorclass
+class NJT:
+    _values: torch.Tensor
+    _offsets: torch.Tensor
+    _lengths: torch.Tensor
+    njt_shape: Any = None
+
+    @classmethod
+    def from_njt(cls, njt_tensor):
+        return NJT(
+            _values=njt_tensor._values,
+            _offsets=njt_tensor._offsets,
+            _lengths=njt_tensor._lengths,
+            njt_shape=njt_tensor.size(0),
+        )
+
+
+@pytest.fixture(autouse=True, scope="function")
+def empty_compiler_cache():
+    torch._dynamo.reset_code_caches()
+    yield
 
 
 def _make_njt():
@@ -34,14 +47,27 @@ def _make_njt():
     )
 
 
-@pytest.fixture
-def njt_td():
+def _njt_td():
     return TensorDict(
         {str(i): {str(j): _make_njt() for j in range(32)} for i in range(32)},
         device="cpu",
     )
 
 
+@pytest.fixture
+def njt_td():
+    return _njt_td()
+
+
+@pytest.fixture
+def td():
+    njtd = _njt_td()
+    for k0, v0 in njtd.items():
+        for k1, v1 in v0.items():
+            njtd[k0, k1] = NJT.from_njt(v1)
+    return njtd
+
+
 @pytest.fixture
 def default_device():
     if torch.cuda.is_available():
@@ -52,22 +78,81 @@ def default_device():
         pytest.skip("CUDA/MPS is not available")
 
 
-@pytest.mark.parametrize("consolidated", [False, True])
+@pytest.mark.parametrize(
+    "consolidated,compile_mode,num_threads",
+    [
+        [False, False, None],
+        [True, False, None],
+        ["within", False, None],
+        # [True, False, 4],
+        # [True, False, 16],
+        # [True, "default", None],
+    ],
+)
 @pytest.mark.skipif(
     TORCH_VERSION < version.parse("2.5.0"), reason="requires torch>=2.5"
 )
 class TestTo:
-    def test_to(self, benchmark, consolidated, td, default_device):
-        if consolidated:
-            td = td.consolidate()
-        benchmark(lambda: td.to(default_device))
+    def test_to(
+        self, benchmark, consolidated, td, default_device, compile_mode, num_threads
+    ):
+        tensordict_logger.info(f"td size {td.bytes() / 1024 / 1024:.2f} Mb")
+        pin_mem = default_device.type == "cuda"
+        if consolidated is True:
+            td = td.consolidate(pin_memory=pin_mem)
+
+        if consolidated == "within":
+
+            def to(td, num_threads):
+                return td.consolidate(pin_memory=pin_mem).to(
+                    default_device, num_threads=num_threads
+                )
+
+        else:
+
+            def to(td, num_threads):
+                return td.to(default_device, num_threads=num_threads)
+
+        if compile_mode:
+            to = torch.compile(to, mode=compile_mode)
+
+        for _ in range(3):
+            to(td, num_threads=num_threads)
+
+        benchmark(to, td, num_threads)
 
-    def test_to_njt(self, benchmark, consolidated, njt_td, default_device):
-        if consolidated:
-            njt_td = njt_td.consolidate()
-        benchmark(lambda: njt_td.to(default_device))
+    def test_to_njt(
+        self, benchmark, consolidated, njt_td, default_device, compile_mode, num_threads
+    ):
+        tensordict_logger.info(f"njtd size {njt_td.bytes() / 1024 / 1024 :.2f} Mb")
+        pin_mem = default_device.type == "cuda"
+        if consolidated is True:
+            njt_td = njt_td.consolidate(pin_memory=pin_mem)
+
+        if consolidated == "within":
+
+            def to(td, num_threads):
+                return td.consolidate(pin_memory=pin_mem).to(
+                    default_device, num_threads=num_threads
+                )
+
+        else:
+
+            def to(td, num_threads):
+                return td.to(default_device, num_threads=num_threads)
+
+        if compile_mode:
+            to = torch.compile(to, mode=compile_mode)
+
+        for _ in range(3):
+            to(njt_td, num_threads=num_threads)
+
+        benchmark(to, njt_td, num_threads)
 
 
 if __name__ == "__main__":
     args, unknown = argparse.ArgumentParser().parse_known_args()
-    pytest.main([__file__, "--capture", "no", "--exitfirst"] + unknown)
+    pytest.main(
+        [__file__, "--capture", "no", "--exitfirst", "--benchmark-group-by", "func"]
+        + unknown
+    )

benchmarks/compile/compile_td_test.py

@@ -23,6 +23,12 @@ class MyTensorClass:
     f: torch.Tensor
 
 
+@pytest.fixture(autouse=True, scope="function")
+def empty_compiler_cache():
+    torch._dynamo.reset_code_caches()
+    yield
+
+
 # Functions
 def add_one(td):
     return td + 1