 @return true if operation is all, which means that options not related
     * to this operation should be ignored, or false otherwise, meaning
     * that usage should be printed when an unrelated option is encountered.
 @return true if operation is all, which means that options not related
     * to this operation should be ignored, or false otherwise, meaning
     * that usage should be printed when an unrelated option is encountered. | NNThroughputBenchmark.java