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Introduce MiniBatchBarrier on worker-side #1127

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hjp615 opened this issue May 4, 2017 · 0 comments
Open

Introduce MiniBatchBarrier on worker-side #1127

hjp615 opened this issue May 4, 2017 · 0 comments
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SyncSGD

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@hjp615
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hjp615 commented May 4, 2017

To introduce synchronous system on dolphin, MiniBatchBarrier should be implemented to control AsyncWorkerTask's mini-batch cycle.

MiniBatchBarrier's role is the following:

  1. When every mini-batch is finished, AsyncWorkerTask sends MiniBatchFinishedMsg to driver.
  2. Until worker receives MiniBatchControlMsg(StartNextMiniBatchMsg or TerminateLearningMsg) from driver, this worker will be blocked in MiniBatchBarrier.
  3. When this worker receives MiniBatchControlMsg from driver, MiniBatchBarrier is unblocked and start next mini-batch or terminate learning.
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