Lightroom: A simple way to accelerate RAW exporting on multicore CPUs. I guess it is simple to implement.

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Hello,

Everyone knows that LR is not properly multithreaded because of Camera RAW conception. When you export a bunch of pics, your CPU is hardly 50% charged with pics and wholes.

But I found a simple (manual) way to accelerate RAW exporting, that can be easily implemented as an automatic function in LR.

When I have a lot of pics to export, I manually create multiple tasks...

For exemple, If I want to export 200 pics, I start to export the 50 first ones, then I select 50 other ones and click on "export with same parameters", then 50 following ones, then 50 last ones...
4 tasks are running in the mean time and my CPU is fully charged with a regular resource consumption in my Windows task manager.

Doing this, the overall process is almost twice or three time faster.

Could you create a new option that allow the user to specify how many task he wants to parallelize, dividing automatically his whole amount of pics export in the number of tasks chosen ?

On my old Intel 3960X, running at least 4 parallel export tasks was fully charging my CPU.

As I just bought a Xeon E5 2697v2 with 12 cores, it would be a BIG benefit for me !!! Preventing me to create 8 tasks manually but doing it in just with one export.

I hope my english is clear.

Best regards,
Philippe.
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PHILIPPE GAUDENS

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Posted 4 years ago

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Rob Cole

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'Export in Parallel' is a simple script that will probably do exactly what you want:


http://www.robcole.com/Rob/ProductsAn...

(post-process actions not supported)

I wrote it, and it's free.
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PHILIPPE GAUDENS

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YEAH !!! Thanks a lot for sharing !!

I will test it asap.

Don't you think Adobe could have think about that far earlier ?!! It's a shame.

Thank you again.
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Rob Cole

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Thanks PHILIPPE,

If any questions/problems, please let me know here:

http://www.robcole.com/Rob/ContactMe

instead of in the forum.

PS - I guess Adobe is busy with other things..

Cheers,
Rob