インテル® VTune™ Amplifier 2018 ヘルプ

Reduction

Metric Description

Reduction time is CPU time that a runtime library spends on loop or region reduction operations.

Possible Issues

A significant portion of CPU time is spent on doing reduction.

上位トピック: Spin and Overhead Time

関連情報

Analyzing OpenMP* Applications

Intel® Threading Building Blocks Targets Use the Intel® VTune™ Amplifier for performance analysis of application targets using Intel Threading Building Blocks (Intel TBB).

Reference for Performance Metrics