Hello all, vips maintainer here, thank you for this interesting discussion. On 29 January 2016 at 16:37, Daniel Rogers <daniel@xxxxxxxxxxxxxxxxx> wrote: > A fast 8 bit pipeline is great for previews or single operation stacks, or > when accuracy is not as important for the user. My feeling is that gegl is probably right to be float-only, the cost is surprisingly low on modern machines. On my laptop, for that benchmark in 8-bit I see: $ time ./vips8.py tmp/x.tif tmp/x2.tif real 0m0.504s user 0m1.548s sys 0m0.104s If I add "cast(float)" just after the load, and "cast(uchar)" just before the write, the whole thing runs as float and I see: $ time ./vips8.py tmp/x.tif tmp/x2.tif real 0m0.578s user 0m1.768s sys 0m0.148s Plus float-only makes an opencl path much simpler. As you say, this tiny benchmark is very focused on batch performance, so fast startup / shutdown and lots of file IO. It's not what gegl is generally used for. John _______________________________________________ gegl-developer-list mailing list List address: gegl-developer-list@xxxxxxxxx List membership: https://mail.gnome.org/mailman/listinfo/gegl-developer-list
