NOTES.md

Notes

Useful stuff to know when trying to understand this library

• BLAS Levels on Wikipedia
• Rendering Pipeline Overview
• Convnetjs #13

Targets

Things I hope to make better

• Synaptic.js
• Convnetjs

Performance Targets

Matrix Multiply BLAS Benchmarks

Based On

Where the ideas (and sometimes code) come from

• glGemm in DeepBeliefSDK
• WebGL Demo by Jonathan Watmough

DeepBeliefSDK

• Buffer - generalized array class. sometimes used at image level, sometimes batch level

  • stores TypedArray in _data (or _quantizedData)
  • shape stored in Dimension class in _dims
    • [batch, rows, columns, channels] (this.valueAt(imageCount, y, x, channel) from showDebugImage)
    • [rows, columns, channels] ( this._dims.offset(originY, originX, 0); from extractSubregion)

• Dimensions - shape class with some syntactic sugar

  • shape is a javascript Array stored in _dims

LICENSE: BSD 3-Clause

WebGL Demo

• gpu_matrix simple matrix class
  • row-major ordering (c style)
  • stores typed array in data
  • dimensions (2D only) stored in r (row count) and c (column count) properties