Argobots 1.1 Release

[shintaro-iwasaki]

Argobots 1.1 will be released around the end of March (the release date will be March 31).
The following will be expected on top of Argobots 1.1b1.

• Fix Configuration-time huge page size detection for mmap #93 [Fixed by mem: fix memory allocation #311]
• Better interoperability interface (combining multiple Argobots-aware components)
  • Fix Multithreaded ABT_init and finailize #86 [Not in Argobots 1.1]
  • (Maybe we need a virtual execution stream) [We do not plan to add this feature to Argobots 1.1]
• API/ABI compatibility check with Argobots 1.0 [All tests passed: [Don't merge] Break API/ABI #307]
  • Adding a new test [CI is added]
• Memory leak check
  • Adding a new test [Fixed by fix memory leak #309]
  • Coverity check [CI is added. Outstanding issues have been fixed: fix bugs/warnings found by Coverity #308]
  • Fix some functions such as ABT_init() and ABT_xstream_create() that do not free memory/resources on error (malloc failures should be checked and assertion should be avoided #116). [Fixed by fix memory leak #309]
• Specification improvement [This does not directly affect the Argobots runtime. We will update them during the normal Argobots development].
  • Proofread the API specification
  • Environmental variables

The following will not be included in Argobots 1.1

• Enhancement of the pool interface #154
• Work-first policy at thread creation #155

Any feedback is welcome!

[shintaro-iwasaki]

I set up CI for ABI/API compatibility check. This will be checked by the ABI Compliance Checker (https://lvc.github.io/abi-compliance-checker/).
It can be triggered manually if necessary. For example, changes in #307 break the compatibility, so the test fails.
https://jenkins-pmrs.cels.anl.gov/job/argobots-review-abicompat/2/
The report looks like this:
https://jenkins-pmrs.cels.anl.gov/job/argobots-review-abicompat/2/compiler=gnu4.8.5,context=fcontext,jenkins_configure=default,label=argobots_centos64,release_ver=1.0/artifact/compat_report.html

It will also be tested nightly. Now the current Argobots main passes all the tests (https://jenkins-pmrs.cels.anl.gov/view/abt/job/argobots-main-abicompat-nightly/).

[shintaro-iwasaki]

Coverity check was added. Argobots will be checked regularly by CI under the following configurations.

# Default configuration
./configure
# For performance optimization
./configure --enable-perf-opt
# Configuration for debugging
./configure --enable-debug=yes --enable-stack-overflow-check=canary-16
# When a machine does not support fcontext (e.g., non-POWER/ARM64/AMD64 machine)
./configure --disable-fcontext
# Experimental 2.0 API
./configure --enable-ver20-api
# Uncommon setting: --enable-feature=no
./configure --enable-feature=no
# Other minor settings
./configure --enable-fcontext --enable-dynamic-promotion --enable-affinity \
            --enable-wait-policy=active --enable-tool

#308 fixed bugs found by Coverity. Now there's no outstanding issue.

Link: https://scan.coverity.com/projects/argobots

[shintaro-iwasaki]

Fixing #86 requires significant changes around the primary execution stream. We decided not to include this in Argobots 1.1.

[shintaro-iwasaki]

#316 is a major issue that needs to be fixed, so I would like to have another PR before Argobots 1.1.
We will release Argobots 1.1rc2 after fixing this issue. Possibly #314 is added too.

[shintaro-iwasaki]

#316 has been fixed by #317.
APIs requested by #314 were added by #319.