Gather-Scatter instructions may not be the optimal choice of instructions when you are trying to achieve superior performance on the Intel® Xeon Phi™ coprocessor.
This is part of a series of blogs on Embree, a collection of high performance ray tracing kernels. Embree has been released open source since version 1.0.
Update: This article is applicable for versions of Intel® VTune™ Amplifier up to 2018.
The vectorization component of the optimization report produced by the Intel® Compiler version 15 may contain remarks such as: