mlx-mfa includes adapted code from the following third-party projects.

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1. metal-flash-attention (GEMMHeaders)
   Source:  https://github.com/philipturner/metal-flash-attention
   Files:   csrc/mfa/GEMMHeaders.cpp (GEMM header generation)
   License: MIT

   Copyright (c) 2024 Philip Turner

   Permission is hereby granted, free of charge, to any person obtaining a copy
   of this software and associated documentation files (the "Software"), to deal
   in the Software without restriction, including without limitation the rights
   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   copies of the Software, and to permit persons to whom the Software is
   furnished to do so, subject to the following conditions:

   The above copyright notice and this permission notice shall be included in all
   copies or substantial portions of the Software.

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   SOFTWARE.

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2. ccv — C-based/Cached/Core Computer Vision Library
   Source:  https://github.com/liuliu/ccv  (branch: unstable, lib/nnc/mfa/)
   Files:   csrc/mfa/AttentionKernel.cpp/.hpp
            csrc/mfa/AttentionKernelDescriptor.cpp/.hpp
            csrc/mfa/CodeWriter.hpp
            csrc/mfa/GEMMHeaders.cpp (partial — GEMM descriptor/source generation)
            csrc/mfa/mfa_compat.h (replacement shims for ccv headers)
            csrc/mfa_shader_gen.cpp (AttentionDescriptor logic)
   License: Apache License 2.0

   Copyright (c) 2017 Liu Liu and contributors

   Licensed under the Apache License, Version 2.0 (the "License"); you may not
   use this file except in compliance with the License. You may obtain a copy of
   the License at:

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   License for the specific language governing permissions and limitations under
   the License.

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3. FlashAttention — algorithm
   Paper:   "FlashAttention: Fast and Memory-Efficient Exact Attention with
             IO-Awareness" (Dao et al., 2022)
             https://arxiv.org/abs/2205.14135
   Source:  https://github.com/Dao-AILab/flash-attention
   Files:   Algorithm only — no source code copied.
   License: BSD 3-Clause

   Copyright (c) 2022, the FlashAttention authors.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are met:

   1. Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.

   2. Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.

   3. Neither the name of the copyright holder nor the names of its contributors
      may be used to endorse or promote products derived from this software
      without specific prior written permission.

   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   POSSIBILITY OF SUCH DAMAGE.

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