This repo holds answer files for the SUNDIALS tests and examples suites. We create directories for different os+microarchitectures and/or hosts since the generated answers are generally sensitive to the machine on which they were created.
The naming convention for the directories is either <os>-<microarch>/<compiler> or
<hostname>/<compiler>.
Note that the first format can easily be generated using Spack:
mkdir $(spack arch)/<compiler>
Within these directories, we create directories for different precisions, e.g. single or double.
The SUNDIALS GitHub Actions CI uses the answer files in linux-ubuntu20.04-x86_64.
To add new answers, start by copying the relevant answers in linux-ubuntu20.04-x86_64 to your new directory (following the naming scheme outlined above).
Next Commit these files and open a PR to the "staging" branch.
Once the PR is merged, you can generate your new answer files and overwrite the ones you copied from linux-ubuntu20.04-x86_64.
Compare the diff and make sure it is reasonable, then commit.
Finally, open a new PR targeting the "staging" branch.
Eventually, "staging" will be merged into main.
Open a PR against main directly.
Archspec is a useful Python library for detecting the CPU microarchitecture of the system you are on. It can be installed via pip:
$ pip install archspec
$ archspec cpu
skylake_avx512
You could also use Spack for this (which uses archspec underneath).
$ spack arch
skylake_avx512