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This alternative is relevant to CUDA device query and kernel smoke tests but does not directly resolve the current Optical FEC BER validation during burn-in issue: Execute supported CUDA runtime initialization and minimal kernel tests on each scheduled accelerator. Observed scenario: A rack passes basic cable continuity but pre-FEC bit errors climb during full-rate data transfer.

This alternative is relevant to GPU thermal power and memory single-node burn-in but does not directly resolve the current Optical FEC BER validation during burn-in issue: Inspect GPU temperature and power traces, clock throttle reasons, error counters and completed stress duration. Observed scenario: A rack passes basic cable continuity but pre-FEC bit errors climb during full-rate data transfer.

This tempting but unsafe shortcut is not a sufficient remediation for Optical FEC BER validation during burn-in: Declare cable quality proven by the absence of hard link-down events while corrected FEC errors rise rapidly. Forward-error correction can mask deteriorating physical signal quality before an interface hard-down occurs.

This alternative is relevant to Multi-node NCCL repeated burn-in but does not directly resolve the current Optical FEC BER validation during burn-in issue: Inspect long-run NCCL logs, error rate, interconnect counters, rank liveness and timing variation. Observed scenario: A rack passes basic cable continuity but pre-FEC bit errors climb during full-rate data transfer.

This alternative is relevant to NeMo distributed training end-to-end burn-in but does not directly resolve the current Optical FEC BER validation during burn-in issue: Review training step timing, data-loader health, collective logs, checkpoint round trip and worker errors. Observed scenario: A rack passes basic cable continuity but pre-FEC bit errors climb during full-rate data transfer.

This tempting but unsafe shortcut is not a sufficient remediation for Optical FEC BER validation during burn-in: Declare cable quality proven by the absence of hard link-down events while corrected FEC errors rise rapidly. A rack passes basic cable continuity but pre-FEC bit errors climb during full-rate data transfer.

This alternative is relevant to CUDA device query and kernel smoke tests but does not directly resolve the current Optical FEC BER validation during burn-in issue: Each intended GPU successfully initializes and executes a minimal repeatable CUDA workload under its supported stack. Observed scenario: A rack passes basic cable continuity but pre-FEC bit errors climb during full-rate data transfer.

This tempting but unsafe shortcut is not a sufficient remediation for Optical FEC BER validation during burn-in: Declare cable quality proven by the absence of hard link-down events while corrected FEC errors rise rapidly. A rack passes basic cable continuity but pre-FEC bit errors climb during full-rate data transfer. Forward-error correction can mask deteriorating physical signal quality before an interface hard-down occurs.

This alternative is relevant to GPU thermal power and memory single-node burn-in but does not directly resolve the current Optical FEC BER validation during burn-in issue: The node sustains approved workload performance without unplanned throttling, errors or facility alarms. Observed scenario: A rack passes basic cable continuity but pre-FEC bit errors climb during full-rate data transfer.

This alternative is relevant to Sustained HPL burn-in thermal and numerical health but does not directly resolve the current Optical FEC BER validation during burn-in issue: Execute sustained HPL trials with validated numerical results, platform telemetry and consistent power constraints. Observed scenario: One optical module experiences frequent FEC corrections and occasionally produces uncorrectable frames.

This alternative is relevant to CUDA device query and kernel smoke tests but does not directly resolve the current Optical FEC BER validation during burn-in issue: Execute supported CUDA runtime initialization and minimal kernel tests on each scheduled accelerator. Observed scenario: One optical module experiences frequent FEC corrections and occasionally produces uncorrectable frames.

This tempting but unsafe shortcut is not a sufficient remediation for Optical FEC BER validation during burn-in: Declare cable quality proven by the absence of hard link-down events while corrected FEC errors rise rapidly. One optical module experiences frequent FEC corrections and occasionally produces uncorrectable frames.

This tempting but unsafe shortcut is not a sufficient remediation for Optical FEC BER validation during burn-in: Declare cable quality proven by the absence of hard link-down events while corrected FEC errors rise rapidly. One optical module experiences frequent FEC corrections and occasionally produces uncorrectable frames. Forward-error correction can mask deteriorating physical signal quality before an interface hard-down occurs.

This alternative is relevant to Sustained HPL burn-in thermal and numerical health but does not directly resolve the current Optical FEC BER validation during burn-in issue: High FLOPS does not prove durable cluster stability; repeated HPL can reveal thermal and computational errors. Observed scenario: One optical module experiences frequent FEC corrections and occasionally produces uncorrectable frames.

That option concerns HPL numerical result and residual validation. The proportionate action is: Collect optical power and FEC or BER data over representative load, then isolate unsafe optics or fibers.

This alternative is relevant to DCGM active single-node diagnostic suites but does not directly resolve the current Optical FEC BER validation during burn-in issue: Inspect dcgmi diag suite results, entity IDs, error logs, driver state and conflicting running workloads. Observed scenario: One optical module experiences frequent FEC corrections and occasionally produces uncorrectable frames.

This tempting but unsafe shortcut is not a sufficient remediation for Optical FEC BER validation during burn-in: Declare cable quality proven by the absence of hard link-down events while corrected FEC errors rise rapidly. Observed scenario: One optical module experiences frequent FEC corrections and occasionally produces uncorrectable frames. The governing mechanism is: Forward-error correction can mask deteriorating physical signal quality before an interface hard-down occurs. The proportionate action is: Collect optical power and FEC or BER data over representative load, then isolate unsafe optics or fibers.

This alternative is relevant to GPU thermal power and memory single-node burn-in but does not directly resolve the current Optical FEC BER validation during burn-in issue: Inspect GPU temperature and power traces, clock throttle reasons, error counters and completed stress duration. Observed scenario: One optical module experiences frequent FEC corrections and occasionally produces uncorrectable frames.

This alternative is relevant to Long-duration burn-in schedule and symptom correlation but does not directly resolve the current Optical FEC BER validation during burn-in issue: The cluster maintains acceptable health and validated throughput for the required duration without hidden alarm accumulation. Observed scenario: One optical module experiences frequent FEC corrections and occasionally produces uncorrectable frames.

This tempting but unsafe shortcut is not a sufficient remediation for Optical FEC BER validation during burn-in: Declare cable quality proven by the absence of hard link-down events while corrected FEC errors rise rapidly. Observed scenario: One optical module experiences frequent FEC corrections and occasionally produces uncorrectable frames. The governing mechanism is: Forward-error correction can mask deteriorating physical signal quality before an interface hard-down occurs. The proportionate action is: Collect optical power and FEC or BER data over representative load, then isolate unsafe optics or fibers. A direct check is: Review transceiver diagnostics, FEC corrected and uncorrectable counters, BER trends and optical power. The acceptance condition is: The link maintains vendor-supported signal margin and acceptable bit-error behavior during sustained traffic.

This alternative is relevant to Multi-node NCCL repeated burn-in but does not directly resolve the current Optical FEC BER validation during burn-in issue: Every planned rank completes sustained correct collectives with throughput and error levels within acceptance limits. Observed scenario: One optical module experiences frequent FEC corrections and occasionally produces uncorrectable frames.

This tempting but unsafe shortcut is not a sufficient remediation for Optical FEC BER validation during burn-in: Declare cable quality proven by the absence of hard link-down events while corrected FEC errors rise rapidly. An installer never verifies receive power after patch-panel cleaning and later sees network retries.

This alternative is relevant to Long-duration burn-in schedule and symptom correlation but does not directly resolve the current Optical FEC BER validation during burn-in issue: Plan approved-duration coordinated burn-in with continuous telemetry and clean test resource reservations. Observed scenario: An installer never verifies receive power after patch-panel cleaning and later sees network retries.

This alternative is relevant to Sustained HPL burn-in thermal and numerical health but does not directly resolve the current Optical FEC BER validation during burn-in issue: Execute sustained HPL trials with validated numerical results, platform telemetry and consistent power constraints. Observed scenario: An installer never verifies receive power after patch-panel cleaning and later sees network retries.

This alternative is relevant to Sustained HPL burn-in thermal and numerical health but does not directly resolve the current Optical FEC BER validation during burn-in issue: High FLOPS does not prove durable cluster stability; repeated HPL can reveal thermal and computational errors. Observed scenario: An installer never verifies receive power after patch-panel cleaning and later sees network retries.

This tempting but unsafe shortcut is not a sufficient remediation for Optical FEC BER validation during burn-in: Declare cable quality proven by the absence of hard link-down events while corrected FEC errors rise rapidly. An installer never verifies receive power after patch-panel cleaning and later sees network retries. Forward-error correction can mask deteriorating physical signal quality before an interface hard-down occurs.

That option concerns Long-duration burn-in schedule and symptom correlation. The proportionate action is: Collect optical power and FEC or BER data over representative load, then isolate unsafe optics or fibers.

This alternative is relevant to DCGM active single-node diagnostic suites but does not directly resolve the current Optical FEC BER validation during burn-in issue: Inspect dcgmi diag suite results, entity IDs, error logs, driver state and conflicting running workloads. Observed scenario: An installer never verifies receive power after patch-panel cleaning and later sees network retries.

This alternative is relevant to Sustained HPL burn-in thermal and numerical health but does not directly resolve the current Optical FEC BER validation during burn-in issue: Inspect per-iteration residual status, achieved FLOPS, GPU errors, thermal trend and job exit codes. Observed scenario: An installer never verifies receive power after patch-panel cleaning and later sees network retries.

This tempting but unsafe shortcut is not a sufficient remediation for Optical FEC BER validation during burn-in: Declare cable quality proven by the absence of hard link-down events while corrected FEC errors rise rapidly. Observed scenario: An installer never verifies receive power after patch-panel cleaning and later sees network retries. The governing mechanism is: Forward-error correction can mask deteriorating physical signal quality before an interface hard-down occurs. The proportionate action is: Collect optical power and FEC or BER data over representative load, then isolate unsafe optics or fibers.

This alternative is relevant to Long-duration burn-in schedule and symptom correlation but does not directly resolve the current Optical FEC BER validation during burn-in issue: Plan approved-duration coordinated burn-in with continuous telemetry and clean test resource reservations. Observed scenario: An installer never verifies receive power after patch-panel cleaning and later sees network retries. The governing mechanism is: Forward-error correction can mask deteriorating physical signal quality before an interface hard-down occurs.

This alternative is relevant to Multi-node NCCL repeated burn-in but does not directly resolve the current Optical FEC BER validation during burn-in issue: Inspect long-run NCCL logs, error rate, interconnect counters, rank liveness and timing variation. Observed scenario: An installer never verifies receive power after patch-panel cleaning and later sees network retries.

This tempting but unsafe shortcut is not a sufficient remediation for Optical FEC BER validation during burn-in: Declare cable quality proven by the absence of hard link-down events while corrected FEC errors rise rapidly. Observed scenario: An installer never verifies receive power after patch-panel cleaning and later sees network retries. The governing mechanism is: Forward-error correction can mask deteriorating physical signal quality before an interface hard-down occurs. The proportionate action is: Collect optical power and FEC or BER data over representative load, then isolate unsafe optics or fibers. A direct check is: Review transceiver diagnostics, FEC corrected and uncorrectable counters, BER trends and optical power. The acceptance condition is: The link maintains vendor-supported signal margin and acceptable bit-error behavior during sustained traffic.