108 lines
3.8 KiB
Python
108 lines
3.8 KiB
Python
#################################################################################################
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#
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# Copyright (c) 2023 - 2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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# SPDX-License-Identifier: BSD-3-Clause
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice, this
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# list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# 3. Neither the name of the copyright holder nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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#################################################################################################
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"""
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Registry of elementwise epilogues
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Elementwise epilogues can be added to many CUTLASS kernels in the CUTLAS Python interface via
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code like the following for GEMM:
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.. highlight:: python
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.. code-block:: python
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plan = cutlass.op.Gemm(element=cutlass.DataType.f32, layout=cutlass.LayoutType.RowMajor)
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plan.activation = cutlass.epilogue.relu
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"""
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from cutlass.backend import epilogue
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gelu = epilogue.gelu
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hardswish = epilogue.hardswish
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identity = epilogue.identity
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leaky_relu = epilogue.leaky_relu
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relu = epilogue.relu
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sigmoid = epilogue.sigmoid
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silu = epilogue.silu
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tanh = epilogue.tanh
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_activations = [gelu, hardswish, identity, leaky_relu, relu, sigmoid, silu, tanh]
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def get_activations() -> list:
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"""
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Returns a list of available activation functions
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:return: list of available activation functions
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:rtype: list
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"""
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return _activations
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def get_activation_epilogue(
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activation,
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element_output,
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elements_per_access,
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element_accumulator,
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element_compute,
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):
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"""
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Return an epilogue corresponding to the activation function, data types, and alignment
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used in the kernel
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:param activation: elementwise activation function to use
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:param element_output: data type of the output
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:param elements_per_access: alignment of operand C of the kernel
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:type elements_per_access: int
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:param element_accumulator: data type of the accumulated output C
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:param element_compute: data type in which compute operations should be performed
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:return: epilogue functor
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"""
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if activation not in _activations:
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raise Exception(
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f"Unsupported activation type {activation}. Available activations are: {_activations}"
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)
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if activation == identity:
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return epilogue.LinearCombination(
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element_output, elements_per_access, element_accumulator, element_compute
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)
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else:
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return epilogue.LinearCombinationGeneric(
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activation(element_compute),
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element_output,
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elements_per_access,
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element_accumulator,
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element_compute,
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)
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