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authorTamara Dahlgren <35777542+tldahlgren@users.noreply.github.com>2020-11-17 02:41:07 -0800
committerGitHub <noreply@github.com>2020-11-17 02:41:07 -0800
commit6fa6af1070908895b77d0ee35650b499971e2719 (patch)
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Support parallel environment builds (#18131)
As of #13100, Spack installs the dependencies of a _single_ spec in parallel. Environments, when installed, can only get parallelism from each individual spec, as they're installed in order. This PR makes entire environments build in parallel by extending Spack's package installer to accept multiple root specs. The install command and Environment class have been updated to use the new parallel install method. The specs and kwargs for each *uninstalled* package (when not force-replacing installations) of an environment are collected, passed to the `PackageInstaller`, and processed using a single build queue. This introduces a `BuildRequest` class to track install arguments, and it significantly cleans up the code used to track package ids during installation. Package ids in the build queue are now just DAG hashes as you would expect, Other tasks: - [x] Finish updating the unit tests based on `PackageInstaller`'s use of `BuildRequest` and the associated changes - [x] Change `environment.py`'s `install_all` to use the `PackageInstaller` directly - [x] Change the `install` command to leverage the new installation process for multiple specs - [x] Change install output messages for external packages, e.g.: `[+] /usr` -> `[+] /usr (external bzip2-1.0.8-<dag-hash>` - [x] Fix incomplete environment install's view setup/update and not confirming all packages are installed (?) - [x] Ensure externally installed package dependencies are properly accounted for in remaining build tasks - [x] Add tests for coverage (if insufficient and can identity the appropriate, uncovered non-comment lines) - [x] Add documentation - [x] Resolve multi-compiler environment install issues - [x] Fix issue with environment installation reporting (restore CDash/JUnit reports)
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