Performance 1.2.5 vs 1.3.0 and gpu usage

[Alexey Pasumansky]

Hello PaleoPixels,

Do you have any information from the projects processed in both versions, so that we can compare the timing?

[PaleoPixels]

No but I could run a benchmark the rest of the weekend if you want. Any settings preferred?

[cadm8]

Ran a simple test, 550 photos to align on 1.3.0 and 1.3.1 or 1.3.2.

1.3.0 took 6000secs while the others 14000! Same settings same everything, how could that be possible?

[Alexey Pasumansky]

Hello cadm8,

Can you provide the screenshots of Chunk Info dialog and also, if possible, the processing logs? Also specify the project type.

[cadm8]

Hi Alexey and thanks for your time; I'm attaching the 1.3.0 chunk info, unfortunately I don't have the rest available as I didn't believe that there would be such big differences in time needed. I'm using an Intel 6800K with 32GB Ram. Since I'm sure you yourself have tested the different versions, I come to no other conclusion that this delay is caused by hardware. Except if more people face the same problem?

[Alexey Pasumansky]

Hello cadm8,

Starting from the version 1.3 PhotoScan is utilizing GPU for the image matching process (first phase of the Align Photos operation), so if you have any GPU checked on in the corresponding Preferences tab, then the processing would be faster than using CPU only.

However, in the version 1.3.0, compared to 1.3.1 and 1.3.2 there was the limit to the number of image pairs used for the depth maps filtering. We have removed that limit in the 1.3.1, as in some cases of oblique shooting the noise level was considerable. But that is related to the dense cloud generated, not to the image alignment.

Can you check that you have GPU enabled in the latest version?

[cadm8]

Actually I'm sure I had enabled GPU throughout the versions test (1.3.1, 1.3.2 and 1.3.0 finally) processing because that was what I initially wanted to check, ie if the GPU is being utilized. The processing time problem came later as a second observation...

[Alexey Pasumansky]

Hello cadm8,

It would be helpful to have the chunk info or processing log for the corresponding stages in 1.3.2 to compare.