Re: [info-performer] Paging problem in terrain visualisation

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From: Tom Flynn (flynnt++at++engr.sgi.com)
Date: 08/01/2003 10:27:17

On Fri, 1 Aug 2003 Andreas.Lenz++at++esg.de wrote:

> Hi,
>
> I'm trying to build an application for terrain visualisation used in flight
> simulation. As i have to cover a large area,
> the database is made up of several (together about 8000) tiles. I started
> from perfly code, added a database function
> in a separate process which should handle the paging of the tiles.
> Loading the tiles works fine, but deleting the tiles with an pfAsyncDelete
> () consumes increasing time. As a result old tiles
> are not deleted fast enough and the new tiles, which should become visible
> are not loaded.
>
> My hardware is a dual pentium with 2x2GHz and GeForce4 4600Ti Graphics
> Card, running Suse Linux 7.3 with XFree 4.2
> and latest NVidia drivers. Performer is installed as evaluation copy.
>
> On a similar hardware with nearly identical system (but licensed
> performer), just slower processor, everything works fine.
>
> Is there some restriction to the evalutaion version running without license
> ?

no, the license just gets rid of the banner.

>
> Ore are there any other hints, maybe some code examples for building and
> running a multithreaded application with paging ??

i personally don't know of an effect like this, perhaps someone else on
the list can comment...
-tom

>
> Any help is welcome
>
> ------------------------------------------------------------
> Andreas Lenz ESG GmbH
> Einsteinstrasse 174 D-81675 München
> Tel.: ++49-89-9216-2167
> Fax.: ++49-89-9216-2632
> Mail: Andreas.Lenz++at++esg.de
> ------------------------------------------------------------
>
>
>
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