1.5.0

We are pleased to announce the 1.5.0 stable release of vt. This release introduces a new load balancing algorithm, enhanced documentation, and general bug fixes to improve performance and usability.

vt 1.5.0 includes:

1. TemperedLB: A new distributed algorithm for memory-constrained load balancing

2. Improved documentation of LB arguments across all load balancers

3. Dozens of bug fixes and improvements to the overall stability of vt. See below for individual PRs.

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Here is a list of all of the work included in this release:

• #2239: Fix crash from missing proxy in CollectionManager by @thearusable
• #2242: update version file and add asm change by @stmcgovern
• #2244: allow replay to repeat phases using modulus by @nlslatt
• #2246: phase: omit print of post-lb stats when no migration by @nlslatt
• #2248: Update nvidia-12 build to use CUDA 12.2 by @JacobDomagala
• #2232: Update find_package_local to work with package_ROOT by @JacobDomagala
• #2231: Add attributes field for rank and object by @thearusable
• #2252: Remove count field from phases metadata by @thearusable
• #2255: startup: add missing mpi header include by @nlslatt
• #2262: Add support code for simulating load from within an application by @nlslatt
• #2259: lb: add timers for lb proper and migration by @nlslatt
• #2257: timing: add more significant figures by @nlslatt
• #2267: lbmanager: print lb time only on rank 0 by @nlslatt
• #2269: replay: remove timing of lb by @nlslatt
• #2253: Convert buffer pointers to std::byte* by @thearusable
• #2271: Fix ASAN error when running perf tests by @JacobDomagala
• #2263: Enable one verbose build for each compiler type by @thearusable
• #2274: serialization: fix memory leak in local send by @lifflander
• #2221: Allow fmt to be used as external lib by @JacobDomagala
• #2276: Improve PerfTestHarness by @JacobDomagala
• #2284: Cleanup performance tests by @JacobDomagala
• #2289: Fix comment typo in args.cc by @thearusable
• #2282: Add stricter warnings for apps that use them by @cz4rs
• #2251: Add perf test for raw MPI Send/Recv and ObjGroup's Send by @JacobDomagala
• #1719: Adding a 3D example program based on the 2D version. by @keitat
• #2292: Update docs on LB data file format by @cwschilly
• #2290: Add new script to generate/fix header guards and license by @JacobDomagala
• #2293: Bug in communication JSON output by @cz4rs
• #2297: Conditionally build Kokkos inside build_cpp.sh and enable it on gcc-12 workflow by @JacobDomagala
• #2145: support sparse OfflineLB maps by @thearusable
• #2311: Fix invalid time format in LBDatafile by @thearusable
• #2310: Update CMake to look for magistrate target by @JacobDomagala
• #2316: Update CI jobs to resolve all warnings. by @thearusable
• #2305: Make LB data examples always up to date by @thearusable
• #2317: Update build_cpp.sh to use -DKokkos_ROOT by @JacobDomagala
• #2327: Fix and issue with multicast not sending to all required nodes by @JacobDomagala
• #2326: fix undefined reference to makeLB in collection_extended by @cz4rs
• #2230: Add YAML as input as alternative to command-line arguments by @cwschilly
• #2324: Fix an issue with magistrate target when it's included as a vt's subdirectory by @JacobDomagala
• #2285: initial citation file by @stmcgovern
• #2329: Build system is mixing the system googletest headers with our internal googletest by @cwschilly
• #2331: Add clang-16 pipeline by @thearusable
• #2315: Create a JSON validator that runs on all JSON produced by CI by @cz4rs
• #2332: simulate_replay fails to link related to dumpStack by @cwschilly
• #2336: fix missing project name in spack ci by @thearusable
• #2339: Fix the object ID to have to the correct features in the JSON reader by @cwschilly
• #2188: nested trace user events output in wrong order by @lifflander
• #2333: Do not deploy LB when average load is smaller than estimated load balancing cost by @thearusable
• #2343: Change schema to allow for id or seq_id by @cwschilly
• #2341: Fix missing NumPy package by @thearusable
• #2278: implement memory aware temperedlb in vt rebased (new version) by @lifflander
• #2294: Integrate vt-tv api into lb data export by @pierrepebay
• #2348: Bump version to 1.5.0 ahead of release by @cwschilly
• #2351: Improve logic in LBDatafile_schema by @cwschilly
• #2349: Release vt v1.5.0 by @cwschilly
• #2353: Add latest changes to 1.5.0 release by @cwschilly

Full Changelog: 1.4.0...1.5.0