mseGPU function

GPUTensor<Scalar> mseGPU(
  1. GPUTensor<Vector> predictions,
  2. GPUTensor<Vector> targets,
  3. CommandBuffer tape
)

Implementation

GPUTensor<Scalar> mseGPU(GPUTensor<Vector> predictions, GPUTensor<Vector> targets, CommandBuffer tape) {
  GPUTensor<Scalar> out = GPUTensor<Scalar>(0.0);

  tape.putInt(OP_MSE_LOSS_FORWARD);
  tape.putString(predictions.id);
  tape.putString(targets.id);
  tape.putString(out.id);

  out.creator = GPUNode(
    [predictions, targets],
        (CommandBuffer bTape) {
      bTape.putInt(OP_MSE_LOSS_BACKWARD);
      // CORRECT ORDER:
      bTape.putString('${out.id}_grad');         // 1. gradOut
      bTape.putString(predictions.id);           // 2. namePred
      bTape.putString(targets.id);               // 3. nameTarget
      bTape.putString('${predictions.id}_grad');  // 4. gradIn
    },
    opName: 'mseGPU',
    cost: 3 * predictions.shape[0],
  );

  return out;
}