Lightroom: 4.2 doesn't use all cores when rendering for export / 1:1 preview

  • 2
  • Problem
  • Updated 5 years ago
  • (Edited)
When applying vertical transformation and at the same time luminance noise reduction LR doesn't use all cores of my CPU for the rendering process.

My system: MacPro Xeon Quad-Core 2,8GHz, 14GB RAM; OS X 10.6.8

Examples:
Vertical transformation between 1 and 8: LR uses 2 cores 100% and 2 cores 50%
VT between 9 and 29: LR uses 2 cores 100%
VT more than 29: LR uses 1 core 100%

Without luminance noise reduction applied it uses all 4 cores 100% all the time.

Export of a 5DII raw takes up to 30 seconds (with vertical transformation and no NR it is about 8 seconds).
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mwitty

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  • confused

Posted 6 years ago

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mwitty

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Adobe, at least you changed something with LR 4.3!

With the combination of a lens profile and vertical transformation LR consequently uses only 1 (in words 'one') of my 4 cores for rendering (1:1 and export).

I hate having a software that is not able to use all my hardware resources.