| commit | f6fad3e65f9800ea7562e1b808484e3f209e1e94 | [log] [tgz] |
|---|---|---|
| author | Ayush Dubey <ayushd@google.com> | Wed Nov 13 12:05:57 2019 -0800 |
| committer | TensorFlower Gardener <gardener@tensorflow.org> | Wed Nov 13 12:10:41 2019 -0800 |
| tree | 7569fe0a0d60d47ca093d471e1622a68d07b45a1 | |
| parent | 2fb91167404496ea5b9b667cba8ad2bb2cb7994d [diff] |
Do not create a cycle when adding control edges in ScopedAllocatorOptimizer. ScopedAllocatorOptimizer adds a few control edges from the parent of the input to collective ops. More context: cl/265532843. Before this change, the optimizer would not check if the node from which it was adding a control edge to the ScopedAllocator node was already in the set of inputs to the collective op group (input set). If that was the case, this would result in a cycle, because the optimizer also adds control edges from ScopedAllocator node to all nodes in the input set. After this change, the optimizer avoids adding a control edge if the node belongs to the transitive fanout of the input set. PiperOrigin-RevId: 280249308 Change-Id: Iacfb2543b2ac4ec4f0f0966ea73c903ab507cdaa
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