v2.7.0

[phlptp]

This release includes a major change internally for filters. Testing and usage revealed some scenarios which could cause deadlock or acausal message arrival. These scenarios were not common so the release was delayed until a fix was in place. As of the 2.7.0 release all the identified issues related to the initial bug have been resolved. There remains some outstanding cases that fail rarely in the CI systems specifically related to rerouting filters that are separate from both the location they are rerouting from and to. The resolution of these is uncertain but will be available in a patch release when resolved. Additional changes include major changes to the CI builds due to changing support of Travis CI and other CI services.

NOTE There are some known issues with using remote rerouting filters in the timing, which can under some conditions allow messages to be delivered after the the time the message was supposed to be delivered. Though most issues have been resolved in this release there remain a few tests in the CI build which are subject to sporadic failures that have yet to be resolved. It is expected these will be resolved in a future release hopefully 2.7.1

Changed

• Update spdlog, fmtlib, filesystem, asio, and units libraries to latest releases (update asio to release 1.18.1 #1798, update fmtlib and spdlog libraries to latest versions #1802, Update units library and filesystem header #1803)
• Default HELICS_USE_ZMQ_STATIC_LIB to ON if only the static library is found in the search path Default HELICS_USE_ZMQ_STATIC_LIBRARY=ON if only the static zmq library is found #1845
• Primary CI systems are now on azure instead of travis Switch HELICS 2 develop branch CI from Travis to Azure Pipelines #1819
• Only a very limited CI test set is run on formatting PR's Skip CI builds for automated formatting PRs/commits #1761

Fixed

• Tests and fixes allowing multiple filters on the same endpoint Make some tests and fixes for multiple filters on a single endpoint #1852
• Fixed some failing broker server tests related to input arguments Broker server tests #1825
• Fixed an issue with barrier and maxTime requests Barrier check #1788
• Fixed a timing bug when using offset and some specific time requests immediately after the enterExecutingMode Fix offset timing bug #1759
• Several fixes and changes to CI systems related to changes in CI infrastructure Pin Drone Cloud ARM32 build to alpine:3.12 #1754, Install Boost for Windows GitHub Actions Workflows #1790, Update HELICS 2 FreeBSD CI build to 12.2 #1828, Pin jumanjihouse/pre-commit hooks to tag rev 2.1.5 #1744, Pin Linux release build Docker base image version to hbb 2.1.0 #1739
• Fixed deadlock caused when querying a disconnected HELICS object add a test for queries on disconnected targets #1705
• Fixed major timing bug with the use of filters Messages on init. #1717
• Fixed issue when sending messages before execution time Messages on init. #1717

Added

• Support for ZMQ 4.3.4 (this will become default in the next version) Add support for finding MSVC ZMQ library versions 4.3.3 and 4.3.4 #1841
• Added a global_flush query to sweep the internal action message queues Try a flush query #1832
• A vcpkg manifest file for some vcpkg support Add vcpkg manifest file #1835
• Added an event triggered flag to better handle timing on federates that are primarily or exclusively triggered by events like filters Event triggered flag #1804
• Added ordered queries which allow queries to run on the normal vs priority pathways for queries that are desired to be synchronous with the other helics messages add the option of ordered queries #1793
• Added github workflow to compress images Create compress images GitHub Actions workflow #1626
• Additional and clearer warning messages when a message is sent to an unknown destination Add a warning message if a message is sent to an unknown destination #1702

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This discussion was created from the release v2,7,0.

[trevorhardy]

Check the releases page for the latest versions.