I would be interested to know the details of how the rendering is shared amongst a cluster of pc's as I am expecting this to be our target platform. I'm familiar with parallel computations on for number crunching on our linux cluster and IBM SP machine using libraries such as MPI and OpenMP etc, but don't quite see how the rendering stage would be performed using Java3D. Is it possible to use multiple graphics cards to render to a single monitor for example?
Wayne
From: Alan Hudson <[EMAIL PROTECTED]> Reply-To: Discussion list for Java 3D API <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Re: [JAVA3D] Parallel Rendering Date: Fri, 19 Mar 2004 09:05:38 -0800
Wayne Glanfield wrote:
I am currently working in the field of engineering and scientific simulations using very large data sets i.e. > 10,000,000 hexahedral cells. One of the bottle necks is visualisation of such large datasets. Although we use commercial visualisation software such as Enight which is capable of parallel rendering and processing of data we are looking into alternative solutions.
Does anyone know if it is possible to perform parallel rendering using the J3D API?
We've been prototyping in this space recently. Are you using VTK at all to help with visualizations? Our tact is to work on X3D exporters for alot of different visualization structures/packages. Then allow the underlying renderer(currently Java3D and Aviatrix3d) to optimize it. Aviatrix3d is specifically being designed for this task. Java3D scales somewhat but its performance on SGI's boxes was disappointing(but perhaps unimportant in the future). Mostly I see people gearing towards linux/pc clusters to run these visualizations.
By exporting to X3D you will have a data format to hold your visualization in a 3D form. Then different X3D engines can optimize the content for different devices. Currently Xj3D(our X3D engine) supports rendering on standard PCs and Elumens Dome devices(small domes up to planetariums) and will shortly have CAVE capabilities. On the other extreme you might want to view a small subset of a mobile device, say in the field where the engineering work is being done.
I'd be curious to know the software packages you are using for simulation, and whether the results are available in XML. Converting from a XML format into X3D is fairly easy.
-- Alan Hudson President: Yumetech, Inc. http://www.yumetech.com/ Web3D Open Source Chair http://www.web3d.org/TaskGroups/source/
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