These scripts are for a Unix-like system (Linux, MacOS, WSL) especially for Cron jobs, but can be run manually.

crontab -e

Assuming CI runs in under 4 hours, this says:

• midnight Sunday, Tuesday, Thursday, Saturday: run C++ frontend GNU
• 4am Sunday, Tuesday, Thursday, Saturday: run C++ frontend Intel oneAPI
• midnight Monday, Wednesday, Friday: run Fortran frontend GNU
• 4am Monday, Wednesday, Friday: run Fortran frontend Intel oneAPI

0 0 * * 0,2,4,6 $HOME/code/gemci/scripts/ci-gnu.sh Nightly 0 0 1
0 4 * * 0,2,4,6 $HOME/code/gemci/scripts/ci-oneapi.sh Nightly 0 0 1
0 0 * * 1,3,5 $HOME/code/gemci/scripts/ci-gnu.sh Nightly 0 0 0
0 4 * * 1,3,5 $HOME/code/gemci/scripts/ci-oneapi.sh Nightly 0 0 0

This polls for duration 43200 seconds (12 hours) with cadence 900 seconds (15 minutes) for Git changes, and runs CI if changes detected.

Here, we start at 8am and poll until 11pm.

• Sunday, Tuesday, ...: C++ GNU frontend
• Monday, Wednesday, ...: Fortran GNU frontend

0 8 * * 0,2,4,6 $HOME/code/gemci/scripts/ci-gnu.sh Continuous 43200 900 1
0 8 * * 1,3,5 $HOME/code/gemci/scripts/ci-gnu.sh Continuous 43200 900 0