Observability for AI Networks: From Counters to GPU-Time SLOs
GPU-time observabilityCORRELATE FABRIC SIGNALS WITH THE JOB TIMELINEX4 NETWORKSCorrelated observability timeline12:44:0012:47:00 GPU utilizationNCCL phaseXmitWaitLink errorsIteration tail AllReducefabric waitcompute Congestion event → GPU idle → tail latencyGPU-TIME SLO: ON TARGETX4 Networks…