4This This page describes a validation plan for OpenHPC deployment on AArch64 systems. It is not restrict to hardware, cloud or emulation systems and should be reasonably independent of the media.
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To achieve the final stage of continuous integration, we'll need to go through a set of steps, from a fully manual setup to fully automated. Not all steps will need to be done in this effort, as many of them already exist for other projects, and we should aim to not duplicate any previous (or future) efforts in achieving our CI loop.
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First Iteration
The first steps are the bootstrap process, where we'll define the best practices, consult other Linaro teams, the upstream OpenHPC community and the SIG members for the multiple decisions we'll need to take to guide us to a meaningful validation process without duplication of work or moving in the wrong direction.
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Once these steps are reproduced by hand, and documented thoroughly, we can start automating the process.
Current Infrastructure
OpenHPC already has good part of that infrastructure ready. The PDF document has a full description on Appendix A on how to extract automation scripts from the docs-ohpc package.
This is what is used by the OpenHPC CI, which tries to run more than just "make check" tests by using the test-suite-ohpc package.
Any change we need to do to the automation and testing, should first be done to those packages, and only in case it's not possible, we should write our own scripts, hopefully shared on their own repository.
We may not be able to share our resources with them (license, NDA), but if we do replicate their setup (Jenkins, etc.), we should use the same sources, repositories and configurations.
Acceptance Criteria
The outcomes of this step are:
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We shouldn't focus on a single one, as all of them are important, but we should prioritise them and pick the more important to do first, and let the others after step #2 is finished in its first iteration.
Current Infrastructure
Right now, what we have is a cloud project on the Linaro Developer Cloud. For now, this allows us to deploy virtual images on AArch64 hardware, create local networks and try out CentOS+OpenHPC installations and mini clusters.
This is the option 2 above and it's probably the closest we'll get from production environments, at least at such an early stage. Progress will be updated in Jira.
Acceptance Criteria
The outcomes of this step are:
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Not all programs can have such an intrusive change, so we should also allow for simple "execution time", and cope with the noise by running it multiple times.
Both validation and benchmarking modes need to run with at least GCC and Clang, GOMP and libomp, so that we can identify any issues that arise in due time.
The second part of this task involved aggregating all the data into a database, so that we can track performance regressions.
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