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@ -358,6 +358,7 @@ void MultiGradientMachine::getOutArgs(std::vector<Argument>* outArgs,
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REGISTER_TIMER("waitOutArgs");
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thread->waitOutArgsReady();
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}
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// outArgs_.size() only need to be calculated once.
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static int size = threads_[threads_.size() - 1]->getOutArgs().size();
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outArgs_.resize(size);
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