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Overview

This is an implementation of whisper from scratch in C++. This is a proof-of-concept. Further modifications, imporvements are coming.

Feedbacks are wellcomed in the corresponding github repository, precompAId.

Binary contains:

  • exe for testing the app quickly
  • header and dll for building custom solutions
  • main.cpp as an example, how to use the header (the exe compiled from this)
  • weights.xdf (required to load into the graph, no other input required)
  • audios folder, containing examples to try the application
  • convert.py for creating the right input for the application from and arbitrary audio file

Versions:

  • for windows there are 4 compiled versions
  • all versions corresponds to the level of available instruction sets
  • avx512: requires avx512F, avx512BW, avx512VL and FMA
  • avx2: requires avx2 and FMA
  • sse: requires sse4.1
  • default: requires no intrinsic related cpu features

Quick start

Example for the usage of whisper.exe (dll should be discoverable by the exe):

whisper.exe weights.xgdf audios\voice_example1.pb

Example compilation (with clang from the root):

clang++ main.cpp win64\whisper.lib -o whisper.exe

Example for converting:

python convert.py --ipath audios\voice_example_orig1.wav --opath voice_example.pb

Implementation info

Tested on:

  • windows 11 and ubuntu20
  • intel i7 11th gen
  • clang 16.06 as compiler

Current properties:

  • fp32
  • this tool can help enlisting the available cpu features for selecting the right library version

Further Notes

Improved versions will arrive regularly. Feedbacks are wellcomed. Especially the following:

  • features to be add (input format, expected output format etc.)
  • devices (plan to extend for mobiles, IPUs etc.)
  • models (what other models would be great to accelerate)
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