ALUMET v0.5.0

This new release features the support of Kubernetes clusters and OAR2 clusters.

Plugin changes

• Discovering folders for pods by @AngeCyp in #3
• Watch new pods created during measures by @AngeCyp in #5
• Retrieve K8S pods names by @AngeCyp in #17
• Cgroups v1 and OAR2 Plugin by @sofiaduqueg in #12
• Improved error messages and RAPL hints by @TheElectronWill

New Contributors

• @sofiaduqueg made their first contribution in #12

Full Changelog: v0.4.0...v0.5.0

ALUMET v0.4.0

Core changes

• It is now possible to add new measurement sources at runtime, after the pipeline has been built.
• Event handlers now return a Result to handle errors more gracefully.
• The pipeline now waits for the sources, transforms and outputs to finish before stopping. This allows all the plugins to flush their buffers, avoiding data loss.
• Errors that occur in pipeline elements are handled more effectively.
• Improved ergonomics and robustness of the pipeline builder.
• MeasurementBuffer now implements IntoIterator.
• Other improvements to the plugin API, including more documentation ✍️

The aforementioned improvements have enabled the creation of two new plugins and one agent feature! (see below) 🎉

Plugin changes

• New: perf plugin (#2) for perf_events monitoring and profiling (hardware, software and cache events are supported)
• New: influx plugin to send measurements to InfluxDB v2
• More options for the csv plugin
• More options for the nvidia plugin
• Bug fixes for the rapl plugin: it is now more robust to unexpected situations (such as kernel modules not being loaded)

Agent changes

• The app-agent crate (that produces alumet-agent) has a new "exec mode" that spawns and observes a single process.
• Both the "normal" alumet agent and the relay agent now suggest to regenerate the configuration file if it is invalid.
• Other improvements to the textual output of the agents.

Full Changelog: v0.3.0...v0.4.0

ALUMET v0.3.0

Core changes

• Support for anonymous sources
• Configurable command latency guarantee
• Configuration management: 1 config per app ("global config") + 1 config per plugin, from TOML files (can be overriden by CLI arguments)
• Graceful shutdown on SIGTERM
• Other improvements to the plugin API
• Beginning of the EventBus for inter-plugin communication
• First "good" version of the API for dynamic plugins (still very much WIP)

Plugin changes

The aforementioned improvements have enabled the creation of new plugins! 🎉

• K8S plugin (#1) thanks to @AngeC15
• Relay plugin with two parts (client + server) thanks to @TheElectronWill
• Draft of the "perf events" plugin

Relay plugin

The relay plugin, used by app-relay-collector, enables Alumet to work in "relay" mode, where each compute node runs an agent that pushes the metrics to a "collector".

ALUMET v0.2.0

Core changes

• More documentation!
• Plugins written in Rust are now created by implementing the rust::AlumetPlugin instead of Plugin. This allows the name and version of static plugins to be available before the initialization phase.
• Agent creation is now easier than ever, thanks to agent::Agent and agent::AgentBuilder
• Plugins can now register custom units.
• Units can now be prefixed, for example PrefixedUnit::milli(Ampere)
• More work on configuration files.

Plugin changes

• plugin-nvidia now supports NVIDIA Jetson devices running NVIDIA Jetpack versions 4.x, 5.x and 6.x
• plugin-rapl is now more robust to errors and gives actionable solutions to common permission issues