Forward-merge branch-24.12 into branch-25.02 #77
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Migrated from: rapidsai/wholegraph#229 This PR is to add gather/scatter support 1D tensor on python level, as WholeGraph should support basic indexing operations for both 1D (array) and 2D (matrix) wholememory tensors. Without this PR, if with 1D wholememory tensor, gather/scatter op does not work, e.g., https://github.com/rapidsai/wholegraph/blob/0efba33835d6e4e104b5d7101a91e0ea55a6ca53/python/pylibwholegraph/pylibwholegraph/torch/tensor.py#L89 To test, run ``` pytest --cache-clear --import-mode=append tests/wholegraph_torch/ops/test_wholegraph_gather_scatter.py -s ``` **Remaining issue:** On my local test with single GPU, the test can pass. For multiGPU setup, gather op works fine, but 1D scatter seems not working as it would crash at: https://github.com/rapidsai/wholegraph/blob/2e963b98aa6027c300d60e839010d3dd8ca422eb/python/pylibwholegraph/pylibwholegraph/tests/wholegraph_torch/ops/test_wholegraph_gather_scatter.py#L108 with incorrect scatter outputs: `Indices where allclose fails: tensor([0., 0., 0., ..., 0., 0., 0.]) tensor([ 1435., 1439., 1443., ..., 257703., 257707., 257711.]) ` This would work if this bugfix is merged: #73 cc. @linhu-nv Authors: - Chang Liu (https://github.com/chang-l) Approvers: - https://github.com/linhu-nv - Alex Barghi (https://github.com/alexbarghi-nv) URL: #74
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SUCCESS - forward-merge complete. |
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Forward-merge triggered by push to branch-24.12 that creates a PR to keep branch-25.02 up-to-date. If this PR is unable to be immediately merged due to conflicts, it will remain open for the team to manually merge. See forward-merger docs for more info.