fix: Add support for TRT 8.6 arguments

- Add support for new TRT 8.6 utilities, including auxiliary streams,
version compatibility, and optimization levels
- Improve documentation of features and version checking for TRT feature
compatibility

py/torch_tensorrt/dynamo/backend/__init__.py

@@ -4,7 +4,7 @@
 import torch_tensorrt
 from functools import partial
 
-from typing import Any, Sequence
+from typing import Any, Optional, Sequence
 from torch_tensorrt import EngineCapability, Device
 from torch_tensorrt.fx.utils import LowerPrecision
 
@@ -17,6 +17,9 @@
     WORKSPACE_SIZE,
     MIN_BLOCK_SIZE,
     PASS_THROUGH_BUILD_FAILURES,
+    MAX_AUX_STREAMS,
+    VERSION_COMPATIBLE,
+    OPTIMIZATION_LEVEL,
     USE_EXPERIMENTAL_RT,
 )
 
@@ -46,6 +49,9 @@ def compile(
     min_block_size=MIN_BLOCK_SIZE,
     torch_executed_ops=[],
     torch_executed_modules=[],
+    max_aux_streams=MAX_AUX_STREAMS,
+    version_compatible=VERSION_COMPATIBLE,
+    optimization_level=OPTIMIZATION_LEVEL,
     use_experimental_rt=USE_EXPERIMENTAL_RT,
     **kwargs,
 ):
@@ -95,6 +101,9 @@ def compile(
         workspace_size=workspace_size,
         min_block_size=min_block_size,
         torch_executed_ops=torch_executed_ops,
+        max_aux_streams=max_aux_streams,
+        version_compatible=version_compatible,
+        optimization_level=optimization_level,
         use_experimental_rt=use_experimental_rt,
         **kwargs,
     )
@@ -119,6 +128,9 @@ def create_backend(
     min_block_size: int = MIN_BLOCK_SIZE,
     torch_executed_ops: Sequence[str] = set(),
     pass_through_build_failures: bool = PASS_THROUGH_BUILD_FAILURES,
+    max_aux_streams: Optional[int] = MAX_AUX_STREAMS,
+    version_compatible: bool = VERSION_COMPATIBLE,
+    optimization_level: Optional[int] = OPTIMIZATION_LEVEL,
     use_experimental_rt: bool = USE_EXPERIMENTAL_RT,
     **kwargs,
 ):
@@ -131,6 +143,10 @@ def create_backend(
         min_block_size: Minimum number of operators per TRT-Engine Block
         torch_executed_ops: Sequence of operations to run in Torch, regardless of converter coverage
         pass_through_build_failures: Whether to fail on TRT engine build errors (True) or not (False)
+        max_aux_streams: Maximum number of allowed auxiliary TRT streams for each engine
+        version_compatible: Provide version forward-compatibility for engine plan files
+        optimization_level: Builder optimization 0-5, higher levels imply longer build time,
+            searching for more optimization options. TRT defaults to 3
         use_experimental_rt: Whether to use the new experimental TRTModuleNext for TRT engines
     Returns:
         Backend for torch.compile
@@ -145,6 +161,9 @@ def create_backend(
         min_block_size=min_block_size,
         torch_executed_ops=torch_executed_ops,
         pass_through_build_failures=pass_through_build_failures,
+        max_aux_streams=max_aux_streams,
+        version_compatible=version_compatible,
+        optimization_level=optimization_level,
         use_experimental_rt=use_experimental_rt,
     )
 

py/torch_tensorrt/dynamo/backend/_defaults.py

@@ -6,4 +6,7 @@
 WORKSPACE_SIZE = 0
 MIN_BLOCK_SIZE = 5
 PASS_THROUGH_BUILD_FAILURES = False
+MAX_AUX_STREAMS = None
+VERSION_COMPATIBLE = False
+OPTIMIZATION_LEVEL = None
 USE_EXPERIMENTAL_RT = False

py/torch_tensorrt/dynamo/backend/_settings.py

@@ -1,5 +1,5 @@
 from dataclasses import dataclass, field
-from typing import Sequence
+from typing import Optional, Sequence
 
 from torch_tensorrt.fx.utils import LowerPrecision
 from torch_tensorrt.dynamo.backend._defaults import (
@@ -8,6 +8,9 @@
     WORKSPACE_SIZE,
     MIN_BLOCK_SIZE,
     PASS_THROUGH_BUILD_FAILURES,
+    MAX_AUX_STREAMS,
+    VERSION_COMPATIBLE,
+    OPTIMIZATION_LEVEL,
     USE_EXPERIMENTAL_RT,
 )
 
@@ -20,4 +23,7 @@ class CompilationSettings:
     min_block_size: int = MIN_BLOCK_SIZE
     torch_executed_ops: Sequence[str] = field(default_factory=set)
     pass_through_build_failures: bool = PASS_THROUGH_BUILD_FAILURES
+    max_aux_streams: Optional[int] = MAX_AUX_STREAMS
+    version_compatible: bool = VERSION_COMPATIBLE
+    optimization_level: Optional[int] = OPTIMIZATION_LEVEL
     use_experimental_rt: bool = USE_EXPERIMENTAL_RT

py/torch_tensorrt/dynamo/backend/conversion.py

@@ -42,6 +42,9 @@ def convert_module(
             if settings.debug
             else trt.ProfilingVerbosity.LAYER_NAMES_ONLY
         ),
+        max_aux_streams=settings.max_aux_streams,
+        version_compatible=settings.version_compatible,
+        optimization_level=settings.optimization_level,
     )
 
     if settings.use_experimental_rt: