7.3. Performance Report

The primary Juno performance artifact is the interactive HTML matrix juno_test_matrix.html (model, CPU vs GPU scenarios, throughput and latency data). Open it from a checkout in a browser; refresh or regenerate the file when harness inputs or hardware baselines change.

Measurements tie back to JFR custom events, especially juno.TokenProduced, juno.MatVec, and juno.ForwardPass. Extract .jfr snapshots with the metrics module as described in JFR and metrics. Cluster runs produce one file per JVM; the launcher prints a per-file summary on exit. For combined percentile math across JVMs, use MetricsMain.extractToJsonMerged() programmatically.

For the methodology behind these numbers, baseline hardware, and how to reproduce them, see Performance methodology.

See also¶

• Chapter 7.2 -- Performance Methodology

• Chapter 7.1 -- JFR and Metrics

• Chapter 2.4 -- GPU Acceleration

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