Adding thread args back in, with allow_soft_placement (#3533)
Adding thread args back in, with allow_soft_placement (#3533)


derekjchow/models,cshallue/models,cshallue/models,cshallue/models,tombstone/models,jiaphuan/models,tombstone/models,alexgorban/models,jiaphuan/models,derekjchow/models,tombstone/models,alexgorban/models,jiaphuan/models,cshallue/models,jiaphuan/models,derekjchow/models,tombstone/models,tombstone/models,jiaphuan/models,derekjchow/models,derekjchow/models,cshallue/models,alexgorban/models,alexgorban/models,tombstone/models,alexgorban/models,jiaphuan/models