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Sync workers with global lock #361

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Sync workers with global lock #361

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Commits on Jun 20, 2019

  1. Merge pull request #1 from NervanaSystems/master 

    update from NervanaSystems
    @kevinzou1982
    kevinzou1982 authored Jun 20, 2019
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Commits on Jun 23, 2019

  1. 1, use global sync lock instand of lock_counter and release_counter i… 

    …n tensorflow. speed up counter access and prevent not zero problem.

2, fix a sync bug. Clipped_ppo_agent for example
if int(batch.size / self.ap.network_wrappers['main'].batch_size) is different between each workers, some worker will be in acting phase and other workers will be block in wait_for_all_workers_barrier
    kevin committed Jun 23, 2019
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