Cerulion 2.0 released: an open-source ROS 2-compatible robot runtime with multi-process replay

Cerulion Inc. released Cerulion 2.0, an open-source, ROS 2-compatible robot runtime that records runs and replays failures against changed code, with one process per node by default. It ships Linux x86_64/ARM64 and macOS binaries, an rmw_cerulion layer tested on Foxy through Lyrical, and MCAP recordings with byte-exact replay verification that returns a nonzero exit code on divergence. On one x86-64 Linux desktop at 1 MiB payload, the project reports a 4.08 µs median round trip versus 10,952 µs for ROS 2 Jazzy with rmw_fastrtps_cpp defaults.