User Guide

Contents

EU Array Stalled

Metric Description

The normalized sum of all cycles on all cores spent stalled. At least one thread is loaded, but the core is stalled for some reason.

Possible Issues

A significant portion of GPU time is spent in stalls. For compute bound code it indicates that the performance might be limited by memory or sampler accesses.

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