[SOLVED] RC crawling since 73%

Development Asset Creation
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1

Hi,

This is my first big project (2363 photos) and RC is unusually slow in normal mode.

It’s been crawling on calculating depth maps since 73% and the Progress Report suggests it’ll take 16 hours to complete. This seems more like Photoscan speed than RC’s usual fast speed.

I’ve tried restarting the construction 3 times & it hits the same block around 73% each time. I’ve tried clearing RC’s cache, restarted my PC & stopped all unnecessary process in Task Manager.

Here are screenshots of my RC settings plus performance graphs from MSI Afterburner. you can see my CPU, GPU and RAM aren’t maxed out - at times CPU & GPU are both at 0%. It’s like RC is taking breaks from working.

RC only calculated 4% of the depth maps in 49 minutes from 11:43 to 12:32 and another 4% from 12:32 to 13:18

Crawling since 73% (76% at 11-43).png

Crawling since 73% (80% at12-32).png

Crawling since 73% (84% at 13-18).png

This hasn’t happened before but I’ve only done smaller projects of a few hundred photos until now.

Is this normal for 2363 photos or can I change something to make RC work stop taking breaks?

Thanks very much for any help you can offer.

Andy

My PC specs:

OS: Windows 10 PRO 64bit
CPU: i7-6700K at 4.00Ghz
GPU: GTX980Ti 6GB
RAM: 32GB (2x16) Corsair DD4 3000Mhz
Motherboard: Gigabyte Z170 Pro Gaming 7
Storage: Three 500Gb Samsung Evo 850 SSDs

2

Hi Andy Pope

Its absolutely NORMAL as after cca 75 % the depthmaps are filtered with low CPU, GPU. HDD activity. you can see this on all sort of sizes of projects.

So take a coffee and enjoy the day in meantime.

3

Thanks Wishgranter.

I guess I’ve just got used to the lightning fast speed RC does smaller projects.

Can I alter any settings to reduce the time it takes to create the depth maps without losing any quality? It took 9 hours for this project on these settings, just for the depth maps.

Or is there an upgrade I can make to my PC which would increase speed? (I expect the answer’s “no” since none of my hardware was maxed out but I’m just a beginner so I might be missing something)

Thanks very much again,

Andy

4

Hi Andy Pope

please fill the HW setup in your signature ucp.php?i=profile&mode=signature

Easiest and cheapest way to improve the speed is add secondary GPU.

5

Wishgranter wrote:

Easiest and cheapest way to improve the speed is add secondary GPU.

I’ve been thinking of getting a GTX1080Ti to replace my 980Ti but would it decrease the 9 hours of calculating depth maps?

My current GPU never went above 47% during that part of the process.

(PC specs now filled in my signature.)

Thanks, Andy

6

Hi Andy Pope

Do not replace the 980Ti, but add additional GPU.

7

It’s my understanding (from tech review sites) that a single GTX1080Ti outperforms two GTX980Tis in Sli.

It would also create less heat, consume less energy and be quieter.

Have you tried comparing results from your 980+970 combo with someone who has a single 1080 to test the speed difference in RC?

Cheers, Andy

8

1080 vs 980Ti no more than 10% faster, and 1080Ti even same as GTX1080 speed for the depth map tasks.
so as Wishgranter suggestion. the 2nd GPU will faster more. normally two same model of GPU can faster 40% than single GPU(depth map tasks)

9

Hi

It’s my understanding (from tech review sites) that a single GTX1080Ti outperforms two GTX980Tis in Sli.

this is ONLY true for gaming , not for COMPUTE. in gaming can see even 100% speedup per architecture, but mostly 10-25% speedup in COMPUTE, as for gaming its quite different as for COMPUTE.

So as wangsgi wrote:

1080 vs 980Ti no more than 10% faster, and 1080Ti even same as GTX1080 speed for the depth map tasks.
so as Wishgranter suggestion. the 2nd GPU will faster more. normally two same model of GPU can faster 40% than single GPU(depth map tasks)