38 lines
1.4 KiB
Plaintext
38 lines
1.4 KiB
Plaintext
/*
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* Copyright (c) 2022-2024, NVIDIA CORPORATION. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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namespace flashinfer {
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enum class QuantizationSFLayout {
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// Block scale factors are stored in swizzled layout for cutlass FP4 kernel. Scale factor
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// blocks are organized in 512-byte blocks in global memory, with each block having 128x4 FP8
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// values. The SF matrix dimensions are therefore padded - rows to the nearest multiple of 128 and
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// columns to the nearest multiple of 4.
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//
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// The scale factor block rows map to data block rows in an interleaved pattern:
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// For a scale factor row 'i', it maps to data block row: (i % 4) * 32 + (i / 4)
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// Column 'j' in the scale factor block corresponds to scaling the j-th block in the data tensor.
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SWIZZLED_128x4,
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SWIZZLED_8x4,
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// Block scale factors are stored in linear layout (row-major). This is used in some trtllm-gen
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// kernels standard.
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LINEAR
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};
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};
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