quantized duplicated precisions.json, which is authoritative for the
quantized/non-quantized partition. default expressed a per-repository
recommendation nothing consumed: the library resolves its own per-platform
default. Both are gone from the schema.
The int8 build quantized only the tied logit head, leaving the rest of the
decoder in fp32. Quantizing every decode-side linear takes the file from
154 MB to 130 MB with a transcript identical to the fp32 decoder.
Encode is untouched and its output is bit-identical to the fp16 variant:
the cross-attention key and value projections are excluded, since the
encoder hoists them and they run in the Vulkan partition.
Match the vulkan config to the canonical exporter spec
The published config dropped int8's default flag and declared the encode
input as -1. The canonical schema marks one default per quant-group, and the
other whisper backends declare the encode length as its 480000 maximum.
Exported with the conv1d-as-conv2d lowering, the slice-based STFT magnitude,
hoisted cross-attention K/V and a head-major KV layout. Requires the ExecuTorch
1.4.1 Vulkan runtime from the v0.10.0-libs-1.4.1 artifacts (gelu clamp, reduce
barrier and Adreno local-work-group fixes).
