fix(mge): control compute_mode by context

GitOrigin-RevId: f3968309f4f0db97b57fee1a65f54de7e366b5dc

imperative/python/megengine/config.py

+from .core._config import *
+
+__import__("mprop").init()

imperative/python/megengine/core/_config.py

+# -*- coding: utf-8 -*-
+# MegEngine is Licensed under the Apache License, Version 2.0 (the "License")
+#
+# Copyright (c) 2014-2021 Megvii Inc. All rights reserved.
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+import os
+from contextlib import contextmanager
+
+__compute_mode = "default"
+__conv_format = "default"
+_benchmark_kernel = False
+_deterministic_kernel = False
+_async_level = os.getenv("MEGENGINE_INTERP_ASYNC_LEVEL", 2)
+
+
+__all__ = [
+    "benchmark_kernel",
+    "deterministic_kernel",
+    "async_level",
+    "_compute_mode",
+    "_conv_format",
+    "_override",
+]
+
+
+@property
+def benchmark_kernel(mod):
+    r"""Whether or not run possible algorithms on real device to find the best one. The default option is false,
+    which means use heuristic to choose the fastest algorithm.
+    
+    Examples:    
+        .. code-block::
+
+           import megengine as mge
+           mge.config.benchmark_kernel = True
+    """
+    return _benchmark_kernel
+
+
+@benchmark_kernel.setter
+def benchmark_kernel(mod, option: bool):
+    global _benchmark_kernel
+    _benchmark_kernel = option
+
+
+@property
+def deterministic_kernel(mod):
+    r"""Whether or not the fastest algorithm choosed is reproducible. The default option is false,
+    which means the algorithm is not reproducible.
+    
+    Examples:    
+        .. code-block::
+
+           import megengine as mge
+           mge.config.deterministic_kernel = True
+    """
+    return _deterministic_kernel
+
+
+@deterministic_kernel.setter
+def deterministic_kernel(mod, option: bool):
+    global _deterministic_kernel
+    _deterministic_kernel = option
+
+
+@property
+def async_level(mod) -> int:
+    r"""Get or set config whether raise error exactly when invoking op. The default level is 2,
+    which means both device and user side errors are async.
+    
+    Examples:    
+        .. code-block::
+
+           import megengine as mge
+           mge.config.async_level = 2
+    """
+    return _async_level
+
+
+@async_level.setter
+def async_level(mod, level: int):
+    global _async_level
+    _async_level = level
+
+
+@property
+def _compute_mode(mod):
+    r"""Get or set the precision of intermediate results. The default option is "default",
+    which means that no special requirements will be placed on.  When set to 'float32', it
+    would be used for accumulator and intermediate result, but only effective when input and 
+    output are of float16 dtype.
+    
+    Examples:    
+        .. code-block::
+
+           import megengine as mge
+           mge.config._compute_mode = "default"
+    """
+    return __compute_mode
+
+
+@_compute_mode.setter
+def _compute_mode(mod, _compute_mode: str):
+    global __compute_mode
+    __compute_mode = _compute_mode
+
+
+@property
+def _conv_format(mod):
+    r"""Get or set convolution data/filter/output layout format. The default option is "default",
+    which means that no special format will be placed on. There are all layout definitions
+
+    ``NCHW`` layout: ``{N, C, H, W}``
+    ``NHWC`` layout: ``{N, H, W, C}``
+    ``NHWCD4`` layout: ``{N, H, (C + 3) / 4, W, 4}``
+    ``NHWCD4I`` layout: with ``align_axis = 2``
+    ``NCHW4`` layout: ``{N, C/4, H, W, 4}``
+    ``NCHW88`` layout: ``{N, C/8, H, W, 8}``
+    ``CHWN4`` layout: ``{C/4, H, W, N, 4}``
+    ``NCHW64`` layout: ``{N, C/64, H, W, 64}``
+    
+    Examples:    
+        .. code-block::
+
+           import megengine as mge
+           mge.config._conv_format = "NHWC"
+    """
+    return __conv_format
+
+
+@_conv_format.setter
+def _conv_format(mod, format: str):
+    global __conv_format
+    __conv_format = format
+
+
+def _reset_execution_config(
+    benchmark_kernel=None,
+    deterministic_kernel=None,
+    async_level=None,
+    compute_mode=None,
+    conv_format=None,
+):
+    global _benchmark_kernel, _deterministic_kernel, _async_level, __compute_mode, __conv_format
+    orig_flags = (
+        _benchmark_kernel,
+        _deterministic_kernel,
+        _async_level,
+        __compute_mode,
+        __conv_format,
+    )
+    if benchmark_kernel is not None:
+        _benchmark_kernel = benchmark_kernel
+    if deterministic_kernel is not None:
+        _deterministic_kernel = deterministic_kernel
+    if async_level is not None:
+        _async_level = async_level
+    if compute_mode is not None:
+        __compute_mode = compute_mode
+    if conv_format is not None:
+        __conv_format = conv_format
+
+    return orig_flags
+
+
+@contextmanager
+def _override(
+    benchmark_kernel=None,
+    deterministic_kernel=None,
+    async_level=None,
+    compute_mode=None,
+    conv_format=None,
+):
+    r"""A context manager that users can opt in by attaching the decorator to set 
+    the config of the global variable.
+    
+    Examples:    
+        .. code-block::
+
+           import megengine as mge
+           
+           @mge.config._override(
+                benchmark_kernel = True,
+                deterministic_kernel = Fasle,
+                async_level=2,
+                compute_mode="float32",
+                conv_format="NHWC",
+            )
+           def train():
+    """
+    orig_flags = _reset_execution_config(
+        benchmark_kernel, deterministic_kernel, async_level, compute_mode, conv_format,
+    )
+    try:
+        yield
+    finally:
+        # recover the previous values
+        _reset_execution_config(*orig_flags)
+
+
+def _get_actual_op_param(function_param, config_param):
+    return function_param if config_param == "default" else config_param

imperative/python/megengine/functional/debug_param.py

@@ -8,26 +8,38 @@
 # "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 import os
 
+from ..core import _config
 from ..core.ops import builtin
 from ..logger import get_logger
 from ..utils.deprecation import deprecated
 
 Strategy = builtin.ops.Convolution.Strategy
 
-_execution_strategy = os.getenv("MEGENGINE_EXECUTION_STRATEGY", "HEURISTIC")
-
 if os.getenv("MEGENGINE_CONV_EXECUTION_STRATEGY") != None:
     get_logger().warning(
         "Environment variable `MEGENGINE_CONV_EXECUTION_STRATEGY` is deprecated, please use `MEGENGINE_EXECUTION_STRATEGY`"
     )
 
+_valid_string_option = {
+    "REPRODUCIBLE": Strategy.REPRODUCIBLE,
+    "HEURISTIC": Strategy.HEURISTIC,
+    "PROFILE": Strategy.PROFILE,
+}
+
 
 def get_execution_strategy() -> Strategy:
     r"""Returns the execution strategy of :class:`~module..Conv2d` and :func:`~.matmul`
 
     See :func:`~.set_execution_strategy` for possible return values
     """
-    return _execution_strategy
+    strategy = Strategy(0)
+    if _config._benchmark_kernel:
+        strategy |= Strategy.PROFILE
+    else:
+        strategy |= Strategy.HEURISTIC
+    if _config._deterministic_kernel:
+        strategy |= Strategy.REPRODUCIBLE
+    return strategy
 
 
 def set_execution_strategy(option):
@@ -50,7 +62,6 @@ def set_execution_strategy(option):
 
     * 'HEURISTIC' uses heuristic to choose the fastest algorithm.
     * 'PROFILE' runs possible algorithms on real device to find the best one.
-    * 'PROFILE_HEURISTIC' uses profiling result and heuristic to choose the fastest algorithm.
     * 'PROFILE_REPRODUCIBLE' uses the fastest of profiling result that is also reproducible.
     * 'HEURISTIC_REPRODUCIBLE' uses heuristic to choose the fastest algorithm that is also reproducible.
 
@@ -58,29 +69,33 @@ def set_execution_strategy(option):
 
     It can also be set through the environment variable 'MEGENGINE_EXECUTION_STRATEGY'.
     """
-    valid_string_option = {
-        "REPRODUCIBLE": Strategy.REPRODUCIBLE,
-        "HEURISTIC": Strategy.HEURISTIC,
-        "PROFILE": Strategy.PROFILE,
-    }
 
-    global _execution_strategy  # pylint: disable=global-statement
     if isinstance(option, Strategy):
-        _execution_strategy = option
+        _config._benchmark_kernel = (
+            True if option & _valid_string_option["PROFILE"] != Strategy(0) else False
+        )
+        _config._deterministic_kernel = (
+            True
+            if option & _valid_string_option["REPRODUCIBLE"] != Strategy(0)
+            else False
+        )
         return
 
     assert isinstance(option, str)
 
-    strategy_tmp = Strategy(0)
+    _config._benchmark_kernel = False
+    _config._deterministic_kernel = False
     for opt in option.split("_"):
-        if not opt in valid_string_option:
+        if not opt in _valid_string_option:
             raise ValueError(
                 "Valid option can only be one of {}, or combine them with '_'.".format(
-                    valid_string_option.keys()
+                    _valid_string_option.keys()
                 )
             )
-        strategy_tmp = strategy_tmp | valid_string_option[opt]
-    _execution_strategy = strategy_tmp
+        _config._benchmark_kernel |= _valid_string_option[opt] == Strategy.PROFILE
+        _config._deterministic_kernel |= (
+            _valid_string_option[opt] == Strategy.REPRODUCIBLE
+        )
 
 
 @deprecated(version="1.3", reason="use get_execution_strategy() instead")
@@ -91,3 +106,6 @@ def get_conv_execution_strategy() -> str:
 @deprecated(version="1.3", reason="use set_execution_strategy() instead")
 def set_conv_execution_strategy(option: str):
     return set_execution_strategy(option)
+
+
+set_execution_strategy(os.getenv("MEGENGINE_EXECUTION_STRATEGY", "HEURISTIC"))