We will talk about expensive instructions in modern CPUs and how to avoid them to speed up your program.
All posts tagged c++
Tune your program’s speed with profile guided optimizations
Profile guided optimizations are a compiler-supported optimization technique that is easy to use and will make your program run faster with little effort. Here you will learn how to enable it on your project and what kind of improvements you can expect.
Process polymorphic classes in lightning speed
We investigate what is the best way to store polymorphic objects in a container for fast access
The price of dynamic memory: Memory Access
If your program uses dynamic memory, its speed will depend on allocation time but also on memory access time. Here we investigate how memory access time depends on the memory layout of your data structure. We also investigate ways to speed up your program by laying out your data structure optimally.
Make your programs run faster: avoid function calls
Function calls are not cheap operations and for time critical code it is better to avoid them. This article explores techniques you can use to avoid function calls thus speeding up your code.
Link Time Optimizations: New Way to Do Compiler Optimizations
Traditional compilation-linking cycle generates binaries that work fine, but in case you need more speed, you need to learn about link time optimizations. Here we talk about what link time optimizations are, how to enable them and what improvements to expect.
Make your programs run faster by better using the data cache
We investigate how the data cache influences the performance of your program, talk about ways for you to write faster programs by better leveraging the data cache.