[tawei-amd]

Problem

The Linux XRT libwhisper_npu.so vendored in #794 (f4f9341f) prints an aiebu debug banner to stdout on every kernel setup:

Header version 0.1
Device Generation: 4
Cols, Rows, NumMemRows : (8, 6, 1)
TransactionSize: ...
NumOps: ...
UID: ...

That's about 1,400 blocks for a 110 s clip. In the Linux ASR test it filled about 4 MB of server log. The other platforms' logs are 75 KB. The HRX .so, the Windows DLLs and the engine before #794 don't print it.

The build host had XRT under /opt/xilinx/xrt/lib, and the engine's link line searched that directory before FastFlowLM_IRON's own libaiebu.a. So -laiebu picked up that XRT's aiebu, which has the banner and doesn't match the aiebu headers the engine compiles against.

Change

The Whisper engine is rebuilt for Linux and Windows, HRX and XRT. The five Whisper xclbins are rebuilt too. Everything comes from FastFlowLM_IRON 315b9cab1 (internal PR #66, CI run 39151964873), which links the repo's libaiebu.a by path.

• Linux XRT .so: the only real change. It has no banner, and its aiebu exports and toolchain (GCC 13.3) now match the other vendored engines.
• Other binaries: they differ only by rebuild noise. The engine and kernel sources are the same as fix(whisper): make the ASR decode loop behave like Whisper #794's, and the Windows import libraries are byte-identical.
• Model weights: unchanged.

Validation

• strings src/lib/xrt/libwhisper_npu.so | grep -c 'Header version' returns 0 (it was 1).
• FastFlowLM_IRON's Whisper Check ran against FastFlowLM main 5a8e0b98, which includes fix(whisper): make the ASR decode loop behave like Whisper #794, on Linux XRT and HRX:
  • the ASR test passed, including the required prompt checks;
  • pooled WER was 7.44%, identical to main;
  • the prompt probe passed.

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