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Travis Notes for Administrators

Administrators: Are PRs taking > 1 hr to run through Travis? If you look at the Travis logs is it building rocket-tools or verilator?

This is because someone committed a PR to master which bumped riscv-tools and/or verilator and the master cache needs to be updated. Note that the master cache expires after 28 days. This is the procedure to follow to get things fast again. Note we don't generally build on branch updates (e.g. to master), just PRs, which means that building the master cache is a manual process when needed.

To get the master cache good again:

  1. Wait for the PR that is changing rocket-tools to go green.
  2. Make sure you are logged into Travis. If you don't have the options below, try logging out and in again.
  3. On Travis, click More Options -> Caches.
  4. Click Delete for the master cache. This is necessary because otherwise the cache just accumulates versions of the tools.
  5. On Travis, click More Options -> Trigger Build on the upper right.
  6. Trigger a master build with a commit message like "manually triggering master build to rebuild cache".

For other PRs which were happening in parallel to the bump of rocket-tools/verilator:

If your PR already has a cache and you want to keep doing development with the old version of rocket-tools/verilator, no action is needed.

If you want to merge or rebase your PR on top of master with the new version of rocket-tools, you should delete your PR branch's local cache. Otherwise it will rebuild the branch cache instead of using master's cache. To do this:

  1. Wait for the previous steps to go through so that the master cache is done.
  2. On Travis, click More Options -> Caches on the upper right.
  3. Click Delete for your PR branch's cache.
  4. Push updates to the PR as usual, it should download the new master cache.