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Big Performance Boost Lightroom Classic 11.4 Exports (Macs Only?)

  
 
jhapeman
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p.1 #1 · p.1 #1 · Big Performance Boost Lightroom Classic 11.4 Exports (Macs Only?)


Well this is very interesting....given that the new Lightroom Classic version 11.4 update notes that they made performance improvements for exports, utilizing the GPU, I thought I'd go back and re-run some of the tests I did back in March.

On my Mac Studios, I repeated the test export I did in March of 1465 Sony A1 files to full-sized jpegs. The export times were cut by 62%--from 16 minutes and 20 seconds to 6 minutes and 20 seconds. The 128GB of RAM Ultra with the 64-core GPU was no faster than the Ultra with 64GB and 48 GPU cores, and in both cases the Activity Monitor app should all of the CPU cores and the GPU being fully utilized (you can't see individual GPU core activity, just the total). BTW, both of my Mac Studios outperform even the 28-core Mac Pro with a W6800X Duo

On my two older Mac Pros the gains were not as substantial, but they did show a 45% increase in speed, again pretty impressive.

Oddly enough...on my AMD Ryzen 64-core Threadripper with two Nvidia RTx 6000 graphics cards, the performance actually got slightly worse. Not really sure what was going on there. Originally it took 13 minutes and thirty seconds and now it took 14 minutes and 20 seconds. I'll need to repeat it and see if I can figure out any problems that made it do worse, as this was an unexpected result given the Mac performance gains.

To me this just highlights how well the Apple Silicon can perform, and the fact that there is plenty of performance to be squeezed out of these chips with continued software optimization.



Jun 17, 2022 at 02:38 PM
CanadaMark
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p.1 #2 · p.1 #2 · Big Performance Boost Lightroom Classic 11.4 Exports (Macs Only?)


Something fishy is going on with your Threadripper machine I think.

I'm shooting a Z9 with similar file sizes to the A1 and it would not take anywhere near 13 minutes to save 1400 files to full sized JPEG (Saving 100 files takes well under 1 minute), and that is on a Ryzen 5950X with 1/4 of the cores in your Threadripper. While many things in Photoshop are single threaded, the batch saving process should be able to use as many cores as you can throw at it, though I can only verify this to 16 cores.



Jun 17, 2022 at 02:58 PM
jhapeman
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p.1 #3 · p.1 #3 · Big Performance Boost Lightroom Classic 11.4 Exports (Macs Only?)


CanadaMark wrote:
Something fishy is going on with your Threadripper machine I think.

I'm shooting a Z9 with similar file sizes to the A1 and it would not take anywhere near 13 minutes to save 1400 files to full sized JPEG (Saving 100 files takes well under 1 minute), and that is on a Ryzen 5950X with 1/4 of the cores in your Threadripper. While many things in Photoshop are single threaded, the batch saving process should be able to use as many cores as you can throw at it, though I can only verify this to 16 cores.


A couple things to note:

1) Just doing basic math you are a bit off: If it takes your machine under a minute for 100, then 14.65 x 100 will be a lot longer and not too far from the numbers I saw unless "well under a minute" means less than 30s. In addition, unless you have the exact same settings and files you can't make true comparisons. Just adjusting the dpi can alter export times; different file types from different cameras can have quite different results. This is why I have continued to use the exact same set of files across multiple computers for these tests.

2) Many tasks do not scale linearly with core count; exports come close but they don't make it. They also don't scale linearly with a small file number to a large file number. I started doing tests with just 100 files and the differences were there but subtle. The reason for buying a hard-core machine is for the ability to really stress it, and when I increased the file count to 1465 it starting to really show the differences.

3) My 64-core TR is the older 3995WX model, and it runs at a lower base clock and turbo clock than your processor, so again, one can't compare directly. It was originally purchased for 3D rendering where the core counts are far more critical than raw speed per core; for pure photography work the 24-core is probably the sweet spot for raw performance per core and core count. BTW, on many tasks the newer 5995WX significantly outperforms the older 3995WX because of the improvements in the Zen 3 architecture, something your chip shares and mine lacks.

4) My surprise about the TR in this run is that it got slower; not necessarily the overall speed. When I last tested it on LRC 11.2, it still took 13 minutes and 31s to export the 1465 files. I expected it to be faster, not slower, since there is a very powerful GPU in the AMD box. In fact, I expected something similar to what I saw with the Mac Pros, where performance jumped 45%.

All of that said, I did monitor the core use on the TR machine while processing and it did show an odd behavior that I've seen before with tasks on this machine--it would spike all of the CPUs in cycles, all the way up to 100%, then down to 30% or so, then back up. I'm not sure if that's an issue with LR or Windows or the way the TR works.

All of this aside, the performance gains on the Apple Silicon machines are just remarkable. I can't recall the last time I've seen such a huge performance bump with just a software update. It also is gratifying that Adobe is continuing to put efforts into increasing performance across the board in Lightroom (I suspect there's some quirky reason the TR didn't see a similar jump that the Intel Macs did, and I expect that it will once it's figured out).





Jun 17, 2022 at 04:33 PM
 


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bobby350z
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p.1 #4 · p.1 #4 · Big Performance Boost Lightroom Classic 11.4 Exports (Macs Only?)


I should try this on my basic Mac Studio with 100MP GFX files. No Lr here, so will be C1. On imports, it is slow like 1 sec per file, with SD card in the Mac.


Jun 17, 2022 at 07:56 PM
jhapeman
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p.1 #5 · p.1 #5 · Big Performance Boost Lightroom Classic 11.4 Exports (Macs Only?)


bobby350z wrote:
I should try this on my basic Mac Studio with 100MP GFX files. No Lr here, so will be C1. On imports, it is slow like 1 sec per file, with SD card in the Mac.


I did some comparative testing with all of my Macs and PCs back in March, and Lightroom just destroyed C1--it was much faster for imports and exports. Now it's even faster on the exports.....



Jun 17, 2022 at 08:33 PM
bobby350z
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p.1 #6 · p.1 #6 · Big Performance Boost Lightroom Classic 11.4 Exports (Macs Only?)


jhapeman wrote:
I did some comparative testing with all of my Macs and PCs back in March, and Lightroom just destroyed C1--it was much faster for imports and exports. Now it's even faster on the exports.....


It seems C1 is quite slow but now a days I am not shooting any thing that I will have 1000 shots per day. I am liking the C1 sessions, no big Lr catalog stuff. For my needs I don't need to do any data analysis on my pictures. I do have Lr but not using it for the last 2+ yrs.



Jun 18, 2022 at 07:48 AM







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