How to Use PGO and LTO With Meson and Clang
A tested walkthrough for enabling Profile Guided Optimization and Link Time Optimization in a Meson project built with Clang, including the llvm-profdata merge step most guides forget.
Optimization
3 pages tagged “Optimization”.
Part 2: Profiling, PGO & LTO
Measuring PGO and LTO on a C++ SPH simulation with perf and flamegraphs, and why they barely helped.
Optimizing an SPH Simulation, Part 1: Speed From the Compiler
Before touching a single line of my fluid simulation, I let the compiler do the work. Just changing flags got me from 1x to roughly 40x.