Intel® VTune™ Profiler User Guide

User Guide

Contents

FP Arithmetic/Memory Write Instructions Ratio

Metric Description

This metric represents the ratio between arithmetic floating point instructions and memory write instructions. A value less than 0.5 indicates unaligned data access for vector operations, which can negatively impact the performance of vector instruction execution.

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