62750a2b75
* v3.8 update x * fix blackwell gg * doc change * doc change * doc change --------- Co-authored-by: yuzhai <yuzhai@nvidia.com> Co-authored-by: Haicheng Wu <haichengw@nvidia.com> Co-authored-by: Haicheng Wu <57973641+hwu36@users.noreply.github.com>
89 lines
3.8 KiB
C++
89 lines
3.8 KiB
C++
/***************************************************************************************************
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* Copyright (c) 2025 - 2025 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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#pragma once
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namespace cutlass::gemm::kernel::detail {
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////////////////////////////////////////////////////////////////////////////////
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enum class RasterOrder {
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AlongM,
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AlongN
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};
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enum class RasterOrderOptions {
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Heuristic,
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AlongM,
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AlongN
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};
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////////////////////////////////////////////////////////////////////////////////
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// Strategies for computing reductions between CTAs computing portions of a given output tile
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enum class ReductionMode {
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// Participating CTAs perform reduction in a turnstile fashion in order of the K extent
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// covered by each CTA. This requires a lock to be held exclusively by the CTA that is
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// currently accumulating.
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//
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// Turnstile accumulation ensures deterministic numeric behavior when using this mode.
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Deterministic,
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// Participating CTAs perform reduction atomically to the same workspace (mostly) without locking.
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// Locks are used only to wait for the first CTA to write its partial values (to initialize the
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// workspace), and for all but the final CTA to have accumulated (so that the final CTA can load
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// the accumulated value and accumulate it into registers on top of which the epilogue will
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// be performed).
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//
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// Due to the nondeterminsitic ordering of accumulation, deterministic numeric behavior cannot
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// be guaranteed with this mode (e.g., floating-point rounding error will depend on the order
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// of accumulation)
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Nondeterministic
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};
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////////////////////////////////////////////////////////////////////////////////
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// Strategies for decomposing the problem
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enum class DecompositionMode {
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// Use a heuristic to determine whether data-parallel, split-K, or stream-K decomposition should be performed
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Heuristic,
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// Force a data-parallel decomposition
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DataParallel,
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// Force a split-K decomposition. This should be paired with setting the `splits` parameter
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SplitK,
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// Force a stream-K decomposition
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StreamK
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};
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////////////////////////////////////////////////////////////////////////////////
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} // namespace cutlass::gemm::kernel::detail
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