Relicense to Apache-2.0 (dual-license; external-contributor files remain MIT)#408
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…y MIT) Rebased onto current develop (3a9ed3f). Relicenses NVIDIA-authored code from MIT to Apache-2.0 using the exact NVIDIA OSS SPDX header, while keeping under MIT every file that carries non-NVIDIA contributions, so no third party's code is relicensed without consent. License assignment (per-file SPDX tag on every source file): - Apache-2.0: 494 files authored solely by NVIDIA. - MIT (63): files with surviving lines from external contributors listed in the relicensing sign-off (issue NVIDIA#431), determined by git blame on develop. Their SPDX tag is flipped back to MIT; can move to Apache-2.0 once the contributor consents. - MIT (29): FlashAttention/QuACK-derived files carrying external authors' copyright; pinned to MIT so the Apache-2.0 root does not absorb them. Licensing files: - LICENSE.txt: Apache-2.0 (primary) with NVIDIA copyright line. - LICENSE-MIT.txt: MIT text for the MIT-licensed subset. - LICENSING.md: dual-license manifest — lists every MIT file, and for the consent-pending set, which external contributor it is attributed to. - THIRD_PARTY_LICENSES.txt: nlohmann/json, FlashAttention, CUTLASS, QuACK, labml.ai, dlpack, pybind11, Catch2. - NOTICE, pyproject (license = 'Apache-2.0 AND MIT'), README updated. New files on develop (tools/cudnn_repro tests) also headered. Every change is comment/header-only; all Python compiles. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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For every file in the MIT manifest, link the commit that introduced the surviving line(s) keeping it under MIT (git blame on origin/develop): - Category 1: the external contributor's commit(s) per file/contributor. - Category 2: the NVIDIA import commit(s) that brought in the derived code. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Summary
Relicenses NVIDIA-authored code in cudnn-frontend from MIT to the Apache License 2.0, using the exact NVIDIA OSS SPDX header (Confluence template). Files that carry non-NVIDIA contributions remain under MIT, so no third party's code is relicensed without consent. Rebased onto current
develop.License assignment
Every source file now carries an SPDX
SPDX-License-Identifier:tag.git blameondevelopThe MIT files are pinned with an explicit
SPDX-License-Identifier: MITso the Apache-2.0 root license does not absorb them. Each consent-pending file can be moved to Apache-2.0 simply by flipping its SPDX tag once the contributor consents.How the split was computed
develop. Files an external contributor merely touched but whose lines were fully overwritten by NVIDIA (e.g.README.md) go to Apache-2.0.Licensing files
license = "Apache-2.0 AND MIT"), README.md updatedFor legal review
cjerry@nvidia.com) holds a personal copyright in FlashAttention-derived DSA files despite an NVIDIA email — confirm treatment.Verification
py_compile);git diff -U0confirms every source change is comment/header-only (compile-neutral)develop(tools/cudnn_reprotests) also headered🤖 Generated with Claude Code