Topics

1

General / Multi GPU vs Multi server

« on: June 20, 2017, 08:30:09 AM »

Hi,

Currently i'm using Photoscan with big GPU rigs (Titan, TitanXP, K80...) and I see that the "filtering depth maps" is one of the longest step we have.

I wonder if any of you know what's better in performance : a big multi GPU single rig or a cluster of small servers with GPU.

For example one of our rig is 5xtitan GPU with 44 cores CPU:

Would it be better to leave it as one or make a cluster of 5 servers with 1x titan each  in term of time of processing ?

Thanks in advance for reading.

2

Python and Java API / Python from 1.2.X to 1.3.0

« on: June 14, 2017, 04:35:40 PM »

Hi all,

I'm currently facing a problem with my python script with Photoscan 1.3.0

This script was used with 1.2 version and worked fine. We just updated to 1.3.0 on our rigs but since the process can't run anymore.

I've isolated the problem to this part:

Code: [Select]

def loadCamera(chunk, path, name):
 
  prepareSensor(chunk)
 
  c = chunk.addCamera()
  c.sensor = chunk.sensors[chunk.sensors.__len__()-1]
 
  oky = c.open(path)

  c.label = name
 
  c.sensor.label = name
 
  img = c.photo.image()
 
  if img is not None:
   
    c.sensor.width = img.width
   
    c.sensor.height = img.height
   
 
  return oky

this part loads our photo, but oky is returned in NoneType.

Any idea ? Maybe Python lib change use others functions.

I've tried to follow up with http://www.agisoft.com/pdf/photoscan_python_api_1_3_0.pdf but i can't find any solutions.

Lemme know if you need more code.

Thanks in advance