subtractVectorGPU function

GPUTensor<Vector> subtractVectorGPU(
  1. GPUTensor<Vector> a,
  2. GPUTensor<Vector> b,
  3. CommandBuffer tape, {
  4. GPUTensor<Vector>? outTensor,
})

Implementation

GPUTensor<Vector> subtractVectorGPU(
    GPUTensor<Vector> a, GPUTensor<Vector> b, CommandBuffer tape,
    {GPUTensor<Vector>? outTensor}) {
  int length = a.shape[0];
  List<int> shape = <int>[length];
  GPUTensor<Vector> out = outTensor ?? GPUTensor<Vector>.empty(shape);

  tape.putInt(OP_SUBTRACT);
  tape.putString(a.id);
  tape.putString(b.id);
  tape.putString(out.id);

  out.creator = GPUNode(
    <GPUTensor>[a, b],
    (CommandBuffer bTape) {
      bTape.putInt(OP_ADD_INTO);
      bTape.putString(out.gradId);
      bTape.putString(a.gradId);

      bTape.putInt(OP_SUBTRACT_INTO);
      bTape.putString(out.gradId);
      bTape.putString(b.gradId);
    },
    opName: 'subtractVectorGPU',
    cost: length,
  );

  return out;
}