CCL-D detects slow/hang anomalies in CCL for distributed training via lightweight tracing probes and an intelligent analyzer, achieving near-complete coverage and 6-minute rank localization on a 4000-GPU cluster over one year.
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CCL-D: A High-Precision Diagnostic System for Slow and Hang Anomalies in Large-Scale Model Training
CCL-D detects slow/hang anomalies in CCL for distributed training via lightweight tracing probes and an intelligent analyzer, achieving near-complete coverage and 6-minute rank localization on a 4000-GPU cluster over one year.