Render job backup size

Hi all,

I've been away from the forum for a while, so apologies if this has been covered already.

In UF6, when I'm rendering a job and back it up, the backup file (.urj) is HUGE compared with the same for UF5. For example, for the fractal below rendered at 4000 x 3000, when backed up at 25% complete, the UF5 .urj file is 603KB, while the UF6 .urj file is 187,612 KB.

Is this desired behavior? Did I miss a setting? Any help?

Kerry

Fractal1 {
fractal:
  title="Fractal1" width=1024 height=768 layers=1
  credits="Kerry Mitchell;12/6/2017"
layer:
  caption="Background" opacity=100
mapping:
  center=0/0 magn=1
formula:
  maxiter=10000 percheck=off filename="Standard.ufm" entry="Julia"
  p_seed=-1.25/0 p_power=2/0 p_bailout=4.0
inside:
  transfer=none solid=4294901760
outside:
  density=50 transfer=linear
gradient:
  smooth=yes index=0 color=0 index=200 color=16777215
opacity:
  smooth=no index=0 opacity=255
}

Hi Kerry,

This is caused by changes to the render engine: it now uses a lot more memory while rendering which improves efficiency, especially with network calculations. The drawback is that this memory space needs to be saved when pausing/resuming a render job, and also when doing a backup.

For version 6.01, I'll reduce the memory usage a bit so it doesn't get too large, limiting the backup size to ~130 MB. I can't easily make it smaller without undoing the faster rendering that the large memory usage makes possible.

Great! That's good to hear. Thanks, Frederik.

I tried it again with the same fractal I posted earlier in this thread. The .urj file was much smaller, even smaller than the uf5 version. And the backup process was much quicker. Thanks!