Intel® VTune™ Profiler User Guide

User Guide

  • 2020
  • 06/18/2020
  • Public Content
Contents

Microarchitecture Usage

Metric Description

Microarchitecture Usage metric is a key indicator that helps estimate (in %) how effectively your code runs on the current microarchitecture. Microarchitecture Usage can be impacted by long-latency memory, floating-point, or SIMD operations; non-retired instructions due to branch mispredictions; instruction starvation in the front-end.

Possible Issues

You code efficiency on this platform is too low.
Possible cause: memory stalls, instruction starvation, branch misprediction or long latency instructions.

Tips

Run Microarchitecture Exploration analysis to identify the cause of the low microarchitecture usage efficiency.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804