Forum

Author Topic: About GPU tab in Preferences  (Read 4571 times)

ugo

  • Full Member
  • ***
  • Posts: 167
    • View Profile
About GPU tab in Preferences
« on: April 07, 2017, 03:14:36 PM »
Hallo,
i just want to know, should i use this selection 'use CPU when performing GPU accelerated processing'?
What it means?

thanks

Alexey Pasumansky

  • Agisoft Technical Support
  • Hero Member
  • *****
  • Posts: 14003
    • View Profile
Re: About GPU tab in Preferences
« Reply #1 on: April 07, 2017, 06:18:39 PM »
Hello ugo,

Enable CPU flag means that CPU would be used in parallel with GPU in GPU-supported tasks. By default we suggest to use it, as it should reduce overall processing time.
Best regards,
Alexey Pasumansky,
Agisoft LLC

mr.barnadib

  • Newbie
  • *
  • Posts: 10
    • View Profile
Re: About GPU tab in Preferences
« Reply #2 on: January 24, 2020, 07:24:37 AM »
Hallo,
i just want to know, should i use this selection 'use CPU when performing GPU accelerated processing'?
What it means?

thanks

https://agisoft.freshdesk.com/support/solutions/articles/31000150614-general-information-related-to-gpu-processing

LipcaCZ

  • Newbie
  • *
  • Posts: 8
    • View Profile
Re: About GPU tab in Preferences
« Reply #3 on: January 25, 2020, 01:50:26 PM »
But those are two opposing suggestions. Alexey says to keep it on, but the linked article tells to disable it if you have anything better than integrated GPU.

Mak11

  • Sr. Member
  • ****
  • Posts: 371
    • View Profile
Re: About GPU tab in Preferences
« Reply #4 on: January 25, 2020, 02:07:17 PM »
Alexey's reply was 3 years ago.
As stated on the support page; It is now highly recommended to keep it off (it is already off be default anyway) if you have a dedicated GPU.

Mak

gto234

  • Newbie
  • *
  • Posts: 41
    • View Profile
Re: About GPU tab in Preferences
« Reply #5 on: January 28, 2020, 02:31:40 PM »
The answer is, if the GPU is powerfull enough you should disable the CPU flag. If the GPU is weak the CPU should be enabled.
In my case I tested the latest 1.6 version in demo mode with laptop i7-8750H and GTX 1050 4GB.
The build arbitary model of 50 photos 20mpx took 1,5 hours to complete with GPU only and the same test with CPU enabled took only 20 minutes!
So you should test it in your configuration to see which is better.