Master: Increment version number to v2.0-beta.2

[mikebentley15]

Create release v2.0-beta.2 from v2.0-beta.1

Highlights of Major Changes

• TravisCI continuous integration fixed and working
• flit bisect
  • outputs results incrementally.
  • optimizations, such as memoizing and search space reduction
  • order findings by the magnitude of variability
  • add flags --compile-only and --precompile-fpic
  • additional bisect assertion for finding disjoint sets
  • add dependency of pyelftools
• Users specify the FLiT search space in flit-config.toml instead of being hard-coded
• flit import: add --dbfile flag to create an import database without a flit-config.toml file
• Remove hosts section from flit-config.toml
• Many bug fixes

All Issues Addressed:

• 174 (PR #179): Have bisect output results incrementally

• 175 (PR #181): Have function passed to bisect_search only take one argument

• 182 (PR #185, #186, #187): Fix TravisCI continuous integration

• 180 (PR #190): Memoize the bisect test function

• 143 (PR #195): Fix NaN return values from litmus tests

• 172 (PR #197): Order bisect findings by magnitude of variability

• 200 (PR #201): Fix CSV file parsing

• 120 (PR #206): Allow user-provided compilers in flit-config.toml

• (PR #209): Add --compile-only and --precompile-fpic to flit bisect

• 211 (PR #215, #223): Add --dbfile to flit import to import without a flit-config.toml file

• 220 (PR #221): Have the test harness delete temporary directories even when exceptions are thrown

• 217 (PR #219): Create a template for issues and pull requests (a GitHub-specific update)

• 212 (PR #213): For bisect, if the Makefile errors out, print out the Makefile output for debugging

• 225 (PR #226): For bisect, add assertion for finding disjoint sets (cannot continue if they overlap)

• 230 (PR #232): Fix compilation if header files go missing

• 229 (PR #231): Fix bisect deadlock where multiple updates to ground-truth.csv were attempted

• 194 (PR #236): Fix the slow bisect search due to an explosion of templated function definitions

• 238 (PR #241): Fix bisect search space problems. Specifically, only search over strong and publicly exported function symbols. This pull request added the dependency of pyelftools.

• 233 (PR #243): Update the required version of binutils in the documentation

• 239 (PR #242): Fix support for older versions of the Clang compiler (version 4)

• 244 (PR #246); Remove the hosts section from flit-config.toml. It was not used.

• 249 (PR #250): Update documentation about how FLiT handles MPI tests. Specifically how the test return values are handled.

• 119 (PR #251): Allow the user to specify the list of optimization levels and flags in flit-config.toml for the FLiT search space. No longer hard-coded.

• 256 (PR #258): Fix bisect crash when an object file has an empty dwarf info

• 257 (PR #259): Fix bisect crash when an object file has no dwarf info section

[mikebentley15]

I still want to create a release-notes.md file. Please refrain from merging until after I am done with that. Thanks!

[mikebentley15]

I have now added the release-notes.md file to keep track of changes and can be found within the repository. Please review and merge at your earliest availability. Basically, are the changes, as specified, good for a release in your opinion? Is there anything in the devel branch that you think is not adequately stable to be merged into master?

Thanks, Ian!

[mikebentley15]

I guess one issue I have is inadequate documentation for many of the features that have been added in. What do you think?

[mikebentley15]

Also, incomplete testing of all features in the code base. But I hardly think that this problem should hinder the creation of new releases.