In this post we present key concepts of software performance engineering.
All posts tagged vectorization
When vectorization hits the memory wall: investigating the AVX2 memory gather instruction
For all the engineers who like to tinker with software performance, vectorization is the holy grail: if it vectorizes, this means that it runs faster. Unfortunately, many times this is not the case, and the results of forcing vectorization by any means can mean lower performance. This happens when vectorization hits the memory wall: although…
Loop Optimizations: taking matters into your hands
We try to answer two questions related to compiler optimizations: how can you help the compiler do a better job and when does it make sense to do the compiler optimizations manually.
Loop Optimizations: how does the compiler do it?
We investigate what are the techniques your compiler employs to make your loop run faster.
CPU Dispatching: Make your code both portable and fast
CPU dispatchingh is all about making your code portable and fast. We will talk about how to make your detect features your CPU has at is disposal and select the fastest function for that particular CPU without a need to recompile your software.