Commit b306f5f9 authored by Peter Hawkins's avatar Peter Hawkins Committed by TensorFlower Gardener
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[TF:XLA] Add a real implementation of XlaDevice::Sync() so Session::Run() will... 

[TF:XLA] Add a real implementation of XlaDevice::Sync() so Session::Run() will correctly wait for all computations to complete on an XLA device before termination.
[TF:XLA] Change the XlaTensor definition event to be a shared pointer to an stream_executor::Event. This allows many tensors to share the same definition event.

PiperOrigin-RevId: 208128264
parent 243f6e63
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