WorldViz User Forum  

Go Back   WorldViz User Forum > Vizard

Reply
 
Thread Tools Rate Thread Display Modes
  #1  
Old 07-10-2013, 04:57 PM
brunomartelli brunomartelli is offline
Member
 
Join Date: Apr 2013
Location: London
Posts: 41
CAVE screen lag

Hi

Im wondering we've got 12 projectors in the CAVE, but when navigating now there is a sort of lag in some of the screens sometimes. We have updated to latest vizard etc. Any ideas what it might be? or what to look at? (it didnt used to do this so something else may have changed)
Reply With Quote
  #2  
Old 07-10-2013, 05:30 PM
Jeff Jeff is offline
WorldViz Team Member
 
Join Date: Aug 2008
Posts: 2,426
Are you running the same scenes as before? What is the framerate when you notice the lag? You can see the framerate if you press F4 with the script running. How are you syncing the machines, through Quadro G-Sync or Vizard's cluster application?
Reply With Quote
  #3  
Old 07-11-2013, 08:25 AM
brunomartelli brunomartelli is offline
Member
 
Join Date: Apr 2013
Location: London
Posts: 41
Yes running same scene, machines are synced with Vizards Cluster app

with clustering 30fps, without 190fps
with clustering (no sync frames) 44 - 60fps
Reply With Quote
  #4  
Old 07-16-2013, 01:46 PM
brunomartelli brunomartelli is offline
Member
 
Join Date: Apr 2013
Location: London
Posts: 41
bump

Quote:
Originally Posted by brunomartelli View Post
Yes running same scene, machines are synced with Vizards Cluster app

with clustering 30fps, without 190fps
with clustering (no sync frames) 44 - 60fps
(((message wants 10 more characters)))
Reply With Quote
  #5  
Old 07-16-2013, 06:00 PM
Jeff Jeff is offline
WorldViz Team Member
 
Join Date: Aug 2008
Posts: 2,426
Do you notice lag if both the Sync Frames and Sync Draw options are enabled with your scene?

Is there an issue with lag if you run a simple scene with clustering and sync enabled? What is the framerate in this case? Try the following code:
Code:
import viz
viz.go(viz.FULLSCREEN)

viz.add('dojo.osgb')

import vizcam
vizcam.PivotAnimate()
Reply With Quote
  #6  
Old 07-18-2013, 03:17 PM
brunomartelli brunomartelli is offline
Member
 
Join Date: Apr 2013
Location: London
Posts: 41
ok that runs fast but there is no stereo...
Reply With Quote
  #7  
Old 07-19-2013, 09:48 AM
brunomartelli brunomartelli is offline
Member
 
Join Date: Apr 2013
Location: London
Posts: 41
back to my scene. with no sync frames and sync draw the fps is higher but variable, with sync frames and sync draw the fps is lower and also variable.

my scene has a large number of landscape tiles. many are not visible because of LOD helper in the OSG file. Is it possible to dynamically load tiles when needed???
Reply With Quote
  #8  
Old 07-19-2013, 11:36 AM
Jeff Jeff is offline
WorldViz Team Member
 
Join Date: Aug 2008
Posts: 2,426
If your scene does not render at 60 fps then enabling sync in the cluster application will lower the framerate because all machines will wait for the slowest one. If you don't enable sync some of the machines may run faster but then they will be out of sync. To keep all screens in sync and maintain a high framerate you'll need to reduce the complexity of your models or optimize them. Here are some articles that maybe helpful:

Drawable Budget
Polygon Budget
Texture Budget
GPU Budget Intro
Reply With Quote
Reply

Tags
cave, lag

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Screen Size and Scaling javadi Vizard 2 04-02-2013 06:56 PM
Attach a TexQuad to pit.osgb screen Ducky Vizard 1 01-17-2013 03:57 PM
Intermittent orthographic stereo projection problems AySz88 Vizard 10 02-17-2012 01:50 PM
[New here] Cave joy navigation esuna114 Vizard 2 06-11-2010 05:36 PM
Flipped floor in a CAVE shivanangel Vizard 1 03-10-2010 11:12 AM


All times are GMT -7. The time now is 01:55 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright 2002-2018 WorldViz LLC