Timing QUDA build

Timing QUDA Build

Tools required

• ninja-build Get it either from your Linux distribution (ninja-build in Ubuntu) or from https://ninja-build.org
• ninjatracing script: Get it from https://github.com/nico/ninjatracing
• Google Chrome for viewing the output

Steps

• build QUDA with ninja (the -GNinja is crucial here). To do this just get started in a fresh build directory and call

mkdir build; cd build
cmake <path-to-quda> -GNinja
...
ninja

• The previous step generated a .ninja_log file that needs to be converted into Chrome's tracing format:

ninjatracing .ninja_log > trace.json

• Open trace.json in Chrome by entering in the address field: chrome://tracing and then loading the trace.json file using the Load button.

Showing build dependencies

ninja -t deps | grep -v usr