concatenateGPU function

GPUTensor<Vector> concatenateGPU(GPUTensor<Vector> a, GPUTensor<Vector> b, CommandBuffer tape, { GPUTensor<Vector>? outTensor, })

Appends two vectors a and b together in order a-b. The operation is appended to tape for execution.

Implementation

GPUTensor<Vector> concatenateGPU(
    GPUTensor<Vector> a, GPUTensor<Vector> b, CommandBuffer tape,
    {GPUTensor<Vector>? outTensor}) {
  int aLength = a.shape[0];
  int totalLength = aLength + b.shape[0];

  GPUTensor<Vector> out =
      outTensor ?? GPUTensor<Vector>(List<double>.filled(totalLength, 0.0));

  tape.putInt(OP_CONCATENATE);
  tape.putString(a.id);
  tape.putString(b.id);
  tape.putString(out.id);
  tape.putInt(0);

  out.creator = GPUNode(
    [a, b],
    (CommandBuffer bTape) {
      bTape.putInt(OP_CONCATENATE_BACKWARD);
      bTape.putString(out.gradId);
      bTape.putString(a.gradId);
      bTape.putString(b.gradId);
      bTape.putInt(0);
      bTape.putInt(aLength);
    },
    opName: 'concat_vectorGPU',
    cost: 0,
  );

  return out;
}