importing/general performance on MacPro

Hi,

I have question regarding importing images or in general, Capture One's performance.

Importing 1200 raw, 14-bit, 45 megapixel images takes about 30 minutes applying 5120px image preview in Capture One 21 (Nikon) on my Mac. Average of approx. 1,5 seconds/image.

Paul Reiffer imports 444 raw, 16-bit, 151 megapixel in just over 4 minutes, applying the same 5120px image preview. Approx. 0,5 images/second

That speed difference is huge when you know that I use identical import options and that we basically use the same hardware : MacPro 7,1 3,2GHz, 16-core.

I have only one Radeon Pro Vega II, Paul has two + afterburner. Capture One doesn't make use of that second GPU (for now) and afterburner. I have 240GB ram installed, Paul uses 196GB.

Does anyone has thoughts on this please? What can I do to push performance?

Toon Stockelynck

March 10, 2021 15:34

FYI, my files sit on one (of four) M.2 SSD that is installed on the Sonnet M.2 4x4 PCIe card. Speed of SSD cannot be the issue here.

Permanently deleted user

March 10, 2021 16:01

Your file sit on ONE of the installed SSD (on Sonnet 4x4), as you say it.

Are you sure the other MacPro is not configured in RAID, which would then write on 2 (or more) SSDs simultaneously, reducing the time to write the files ?

March 10, 2021 16:37

Hi Claude,

indeed, my M.2's are currently not RAID-configured (although I did some tests when I got the Sonnet card, RAID 0 is incredibly fast).

But I don't believe Paul uses RAID either, he doesn't mention it anywhere. Since he uses the MacPro out-of-the-box, I presume he used the internal 4TB SSD. But sure, only he can tell ;-)

I decided to do the test. I copied the 1200 raw files (64 GB) from the M.2 to the built-in Apple 1TB SSD (takes less than a minute) and imported them from there in C1 (v21). Same result, this task also takes 31 minutes.

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