User Guide

Contents

VS EU Active

Metric Description

The
VS EU Active
metric represents the percentage of overall GPU time that the execution units (EUs) were actively executing Vertex Shader instructions. This metric is important if vertex processing seems to be a bottleneck for selected rendering calls.

Possible Issues

  • If
    VS EU Active
    is 50%, half of the overall GPU time was spent actively executing Vertex Shader instructions.
  • If
    VS EU Active
    is 0%, no Vertex Shader was associated with the selected draw calls, or the amount of time actively executing Vertex Shader instructions was negligible.
To improve performance:
  • If
    VS EU Active
    accounts for most of the EU active time, then to improve performance you should simplify the vertex shader or simplify and optimize the geometry of your primitives.
  • If
    VS EU Active
    is significant, you should examine your vertex shader code to find the reasons that might be causing stalls.

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