feat: support amax dynamo converter (#2241)

py/torch_tensorrt/dynamo/conversion/aten_ops_converters.py

@@ -440,6 +440,37 @@ def aten_ops_expand(
     )
 
 
+def amax_param_validator(amax_node: Node) -> bool:
+    if len(amax_node.args) < 2:
+        _LOGGER.debug(
+            f"At least two args input and dim should be provided, but only got {len(amax_node.args)} args."
+        )
+        return False
+
+    return True
+
+
+@dynamo_tensorrt_converter(
+    torch.ops.aten.amax.default, capability_validator=amax_param_validator
+)
+def aten_ops_amax(
+    network: TRTNetwork,
+    target: Target,
+    args: Tuple[Argument, ...],
+    kwargs: Dict[str, Argument],
+    name: str,
+) -> Union[TRTTensor, Sequence[TRTTensor]]:
+    return impl.reduce.amax(
+        network,
+        target,
+        SourceIR.ATEN,
+        name,
+        args[0],
+        args[1],
+        args_bounds_check(args, 2, replacement=False),
+    )
+
+
 @dynamo_tensorrt_converter(torch.ops.aten.exp.default)  # type: ignore[misc]
 def aten_ops_exp(
     network: TRTNetwork,

py/torch_tensorrt/dynamo/conversion/converter_utils.py

@@ -1,3 +1,4 @@
+import functools
 import logging
 import re
 from typing import List, Optional
@@ -7,6 +8,7 @@
 from torch.fx.node import Target
 from torch_tensorrt.fx.converters.converter_utils import (
     Frameworks,
+    get_axes_for_reduce_op,
     unified_dtype_converter,
 )
 from torch_tensorrt.fx.types import TRTDataType, TRTNetwork, TRTTensor
@@ -157,3 +159,8 @@ def broadcastable(
         if not (a_shape[i] == b_shape[i] or a_shape[i] == 1 or b_shape[i] == 1):
             return False
     return True
+
+
+get_axes_for_reduce_op = functools.partial(
+    get_axes_for_reduce_op, has_implicit_batch_dimension=False
+)

py/torch_tensorrt/dynamo/conversion/impl/__init__.py

@@ -9,6 +9,7 @@
     matmul,
     normalization,
     permutation,
+    reduce,
     select,
     shape,
     slice,

py/torch_tensorrt/dynamo/conversion/impl/reduce.py

@@ -0,0 +1,35 @@
+from typing import Optional, Tuple, Union
+
+import tensorrt as trt
+from torch.fx.node import Target
+from torch_tensorrt.dynamo._SourceIR import SourceIR
+from torch_tensorrt.dynamo.conversion.converter_utils import (
+    cast_trt_tensor,
+    get_axes_for_reduce_op,
+)
+from torch_tensorrt.fx.converters.converter_utils import set_layer_name
+from torch_tensorrt.fx.types import TRTNetwork, TRTTensor
+
+
+def amax(
+    network: TRTNetwork,
+    target: Target,
+    source_ir: Optional[SourceIR],
+    name: str,
+    input_val: TRTTensor,
+    dim: Union[int, Tuple[int]],
+    keepdim: bool = False,
+) -> TRTTensor:
+    if (isinstance(input_val, TRTTensor)) and (
+        input_val.dtype == trt.int8 or input_val.dtype == trt.int32
+    ):
+        input_val = cast_trt_tensor(network, input_val, trt.float32, name)
+
+    layer = network.add_reduce(
+        input_val,
+        trt.ReduceOperation.MAX,
+        axes=get_axes_for_reduce_op(dim),
+        keep_dims=keepdim,
+    )
+    set_layer_name(layer, target, name, source_ir)
+    return layer.get_output(0)

tests/py/dynamo/converters/test_amax_aten.py

@@ -0,0 +1,93 @@
+import torch
+import torch.nn as nn
+from harness import DispatchTestCase
+from parameterized import parameterized
+from torch.testing._internal.common_utils import run_tests
+
+
+class TestAmaxConverter(DispatchTestCase):
+    @parameterized.expand(
+        [
+            ((3, 2, 4), 1, True),
+            ((2, 3, 4, 5), 3, True),
+            ((2, 3, 4, 5), 2, False),
+            ((6, 7, 5, 4, 5), 4, False),
+        ]
+    )
+    def test_amax_dim_int_default(self, input_shape, dim, keep_dims):
+        class Amax(nn.Module):
+            def forward(self, x):
+                return torch.amax(x, dim=dim, keepdim=keep_dims)
+
+        inputs = [torch.randn(*input_shape)]
+        self.run_test(
+            Amax(),
+            inputs,
+            expected_ops={torch.ops.aten.amax.default},
+        )
+
+    @parameterized.expand(
+        [
+            ((3, 2, 4), [1], True),
+            ((2, 1, 4, 5), [0, 3], True),
+            ((2, 3, 4, 5), [0, 1, 2, 3], False),
+            ((6, 7, 5, 4, 5), [1, 3, 4], False),
+        ]
+    )
+    def test_amax_dim_tuple_default(self, input_shape, dim, keep_dims):
+        class Amax(nn.Module):
+            def forward(self, x):
+                return torch.amax(x, dim=dim, keepdim=keep_dims)
+
+        inputs = [torch.randn(*input_shape)]
+        self.run_test(
+            Amax(),
+            inputs,
+            expected_ops={torch.ops.aten.amax.default},
+        )
+
+    @parameterized.expand(
+        [
+            ((3, 2, 4), 1, True, torch.int, 0, 5),
+            ((2, 3, 4, 5), 3, True, torch.int, -10, 10),
+            ((2, 3, 4, 5), 2, False, torch.int32, -5, 0),
+            ((6, 7, 5, 4, 5), 4, False, torch.int32, -5, 5),
+        ]
+    )
+    def test_amax_dim_int_int(self, input_shape, dim, keep_dims, dtype, low, high):
+        class Amax(nn.Module):
+            def forward(self, x):
+                return torch.amax(x, dim=dim, keepdim=keep_dims)
+
+        inputs = [torch.randint(low, high, input_shape, dtype=dtype)]
+        self.run_test(
+            Amax(),
+            inputs,
+            expected_ops={torch.ops.aten.amax.default},
+            check_dtype=False,
+        )
+
+    @parameterized.expand(
+        [
+            ((3, 2, 4), [1], True, torch.int, 0, 5),
+            ((2, 1, 4, 5), [0, 3], True, torch.int, -10, 10),
+            ((2, 3, 4, 5), [0, 1, 2, 3], False, torch.int32, -5, 0),
+            ((6, 7, 5, 4, 5), [1, 3, 4], False, torch.int32, -5, 5),
+        ]
+    )
+    def test_amax_dim_tuple_int(self, input_shape, dim, keep_dims, dtype, low, high):
+        class Amax(nn.Module):
+            def forward(self, x):
+                return torch.amax(x, dim=dim, keepdim=keep_dims)
+
+        inputs = [torch.randint(low, high, input_shape, dtype=dtype)]
+        self.run_test(
+            Amax(),
+            inputs,
+            expected_ops={torch.ops.aten.amax.default},
+            check_dtype=False,
+        )
+
+
+if __name__ == "__main__":
+    run_tests()