Support TensorFlow 2.20 inference compatibility - #29
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Summary
Background
TensorFlow 2.18 and later enable XLA custom-kernel fusion passes that can change GEMM lowering for the released SavedModel. The resulting small numerical differences are amplified during autoregressive decoding and can change the generated ink.
This change disables the affected XLA passes and GPU autotuning before TensorFlow loads. It does not modify the model or checkpoint.