New presentation materials:
GitHub migration complete:
New software releases:
Argobots 1.1 Underlying user-level threading package for Mochi includes performance improvements, broader platform support, and new profiling and debugging capabilities (more on that later) Mercury 2.0.1rc3 Underlying RPC communication package for Mochi improved logging and several performance optimizations final 2.0.1 release coming soon Mochi-sdskv 0.1.12 Key/Value store microservice Bedrock support various packaging (cmake, pkgconfig, and dependency) improvements Bedrock 0.2.1 Flexible service composition tool various packaging (cmake, pkgconfig) improvements Sonata 0.6.2 Document store microservice various packaging (cmake) improvements Performance regressions from previous quarterly newsletter resolved:
Power9 CPU mutex locking performance regression is resolved in Argobots 1.1 OmniPath network performance regression is resolved in Mercury 2.0.1rc3 New debugging/profiling/maintenance features:
Margo is now using munit for unit testing Available in origin/main (or [email protected] in Spack) Coverage is limited for now but will be expanded over time We will also be leveraging this frame work in additional components over time Recent Argobots updates include multiple (optional) stack guard methods See Argobots documentation or Spack package variants. Notable optoins: “mprotect”: real time detection of stack overruns (with some performance overhead; just use this for debugging) “canary”: lightweight deferred stack overrun detection (lighter weight, but will not report that a stack overflow occurred until shutdown) margo_state_dump() function Available in origin/main (or [email protected] in Spack) function that can be called at any time to dump point-in-time state to a text file or stdout for debugging purposes includes Margo json configuration, Argobots configuration, current Argobots ES layout, Argobots performance profile, in flight RPC counts, stack dump for blocked user-level threads, etc. See https://github.com/mochi-hpc/mochi-margo/blob/main/doc/debugging.md for details.