> We have just set up SGI's Java3D ver 1.3 in a three-screen CAVE running on > an IRIX platform and are experiencing what might be some optimisatiion > issues. We have a program that runs almost five times faster on a Windows PC > with a 64MB graphics card than it does on our IRIX machine which has 256MB > graphics memory and twice as much RAM.
Sounds like you might not be getting multi-pipe rendering on the SGI. Is your Windows PC driving three screens as well? You may be comparing the performance of a machine driving one screen with the performance of a single GPU driving 3 screens. If so, the key is to get the SGI driving each screen with its own GPU. Do you have the Xinerama multi-screen X11 rendering extension turned on? You may want to turn it off for the SGI and set up each screen as an independent display; that works much better in Java 3D 1.3. In 1.3.1 we added code to transparently access the graphics resources across multiple screens without the excessive overhead of Xinerama, but that was a Solaris-specific revision. -- Mark Hood =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
