precision-align

To diagnose precision drift on Ascend, systematically compare lmdeploy+dlinfer outputs against reference implementations by tracing from layer 0 outward to pinpoint the first differing operation. This structured tensor-dump approach isolates the root cause of precision mismatches.

Layer-0 isolation is a debugging technique that identifies the first operation with a precision discrepancy, starting from the initial RMSNorm, Attention, or MLP stack. It enforces deterministic comparisons to locate the exact origin of numerical drift.

Yes, the precision debugging workflow supports CAMB and MACA backends alongside Ascend. It applies systematic comparison and stepwise isolation across these domestic hardware backends to locate the root cause of precision drift.

To locate the first differing operation in dlinfer, enforce deterministic comparisons and perform structured tensor dumps. This stepwise isolation process traces outputs from layer 0 outward to pinpoint the exact operation causing the precision mismatch.

The best way to fix precision mismatches is using a guided debugging process that enforces exact tensor equality checks and reports quantitative differences. This methodically traces the discrepancy to guide targeted fixes for numerical drift.