update CHANGELOG.md for 0.14.0
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Todd Gamblin
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CHANGELOG.md
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# v0.14.0 (2020-02-23)
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`v0.14.0` is a major feature release, with 3 highlighted features:
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1. **Distributed builds.** Multiple Spack instances will now coordinate
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properly with each other through locks. This works on a single node
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(where you've called `spack` several times) or across multiple nodes
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with a shared filesystem. For example, with SLURM, you could build
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`trilinos` and its dependencies on 2 24-core nodes, with 3 Spack
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instances per node and 8 build jobs per instance, with `srun -N 2 -n 6
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spack install -j 8 trilinos`. This requires a filesystem with locking
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enabled, but not MPI or any other library for parallelism.
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2. **Build pipelines.** You can also build in parallel through Gitlab
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CI. Simply create a Spack environment and push it to Gitlab to build
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on Gitlab runners. Pipeline support is now integreated into a single
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`spack ci` command, so setting it up is easier than ever. See the
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[Pipelines section](https://spack.readthedocs.io/en/v0.14.0/pipelines.html)
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in the docs.
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3. **Container builds.** The new `spack containerize` command allows you
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to create a Docker or Singularity recipe from any Spack environment.
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There are options to customize the build if you need them. See the
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[Container Images section](https://spack.readthedocs.io/en/latest/containers.html)
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in the docs.
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In addition, there are several other new commands, many bugfixes and
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improvements, and `spack load` no longer requires modules, so you can use
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it the same way on your laptop or on your supercomputer.
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Spack grew by over 300 packages since our last release in November 2019,
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and the project grew to over 500 contributors. Thanks to all of you for
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making yet another great release possible. Detailed notes below.
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## Major new core features
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* Distributed builds: spack instances coordinate and build in parallel (#13100)
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* New `spack ci` command to manage CI pipelines (#12854)
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* Generate container recipes from environments: `spack containerize` (#14202)
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* `spack load` now works without using modules (#14062, #14628)
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* Garbage collect old/unused installations with `spack gc` (#13534)
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* Configuration files all set environment modifications the same way (#14372,
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[docs](https://spack.readthedocs.io/en/v0.14.0/configuration.html#environment-modifications))
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* `spack commands --format=bash` auto-generates completion (#14393, #14607)
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* Packages can specify alternate fetch URLs in case one fails (#13881)
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## Improvements
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* Improved locking for concurrency with environments (#14676, #14621, #14692)
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* `spack test` sends args to `pytest`, supports better listing (#14319)
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* Better support for aarch64 and cascadelake microarch (#13825, #13780, #13820)
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* Archspec is now a separate library (see https://github.com/archspec/archspec)
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* Many improvements to the `spack buildcache` command (#14237, #14346,
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#14466, #14467, #14639, #14642, #14659, #14696, #14698, #14714, #14732,
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#14929, #15003, #15086, #15134)
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## Selected Bugfixes
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* Compilers now require an exact match on version (#8735, #14730, #14752)
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* Bugfix for patches that specified specific versions (#13989)
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* `spack find -p` now works in environments (#10019, #13972)
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* Dependency queries work correctly in `spack find` (#14757)
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* Bugfixes for locking upstream Spack instances chains (#13364)
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* Fixes for PowerPC clang optimization flags (#14196)
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* Fix for issue with compilers and specific microarchitectures (#13733, #14798)
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## New commands and options
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* `spack ci` (#12854)
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* `spack containerize` (#14202)
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* `spack gc` (#13534)
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* `spack load` accepts `--only package`, `--only dependencies` (#14062, #14628)
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* `spack commands --format=bash` (#14393)
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* `spack commands --update-completion` (#14607)
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* `spack install --with-cache` has new option: `--no-check-signature` (#11107)
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* `spack test` now has `--list`, `--list-long`, and `--list-names` (#14319)
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* `spack install --help-cdash` moves CDash help out of the main help (#13704)
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## Deprecations
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* `spack release-jobs` has been rolled into `spack ci`
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* `spack bootstrap` will be removed in a future version, as it is no longer
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needed to set up modules (see `spack load` improvements above)
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## Documentation
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* New section on building container images with Spack (see
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[docs](https://spack.readthedocs.io/en/latest/containers.html))
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* New section on using `spack ci` command to build pipelines (see
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[docs](https://spack.readthedocs.io/en/latest/pipelines.html))
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* Document how to add conditional dependencies (#14694)
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* Document how to use Spack to replace Homebrew/Conda (#13083, see
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[docs](https://spack.readthedocs.io/en/latest/workflows.html#using-spack-to-replace-homebrew-conda))
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## Important package changes
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* 3,908 total packages (345 added since 0.13.0)
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* Added first cut at a TensorFlow package (#13112)
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* We now build R without "recommended" packages, manage them w/Spack (#12015)
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* Elpa and OpenBLAS now leverage microarchitecture support (#13655, #14380)
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* Fix `octave` compiler wrapper usage (#14726)
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* Enforce that packages in `builtin` aren't missing dependencies (#13949)
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# v0.13.4 (2020-02-07)
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This release contains several bugfixes:
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