2 Replies Latest reply on May 1, 2015 6:55 AM by andrewfreeman

    Is the GPU used in the photomerge features?

    andrewfreeman Level 3

      I was wondering if the GPU is actually used in any of the photomerge features? Because I'm not convinced it is.

       

      I'm have several GPUs available to test from consumer low end cards (£25) to mid-end professional workstation cards (£450). I'd really like to try a high end gaming card...but think I'll give that a miss as I don't have access to one.

       

      In running tests I've noticed a difference in some features, some rather noticeable, particularly with the GUI/ image response between the cards, so all is good there.

       

      However, what I have noticed is not a great deal of difference, if any, in the photomerge features. Average processing times are the same, irrespective of what card is used.

       

      GPU acceleration is enabled by the way.

       

      And here's the killer: if I disable GPU acceleration, I get the same result (LR is restarted between changes BTW).

       

      So hence that's my conclusion. I'd find it a little strange if it wasn't used. I thought something as mathematically intensive as merging images would be ideal for a GPU.

       

      Anyone care to comment?