Hello, I want to write a PDE simulation and parallelize it using Equalizer. I only have no idea how to go on about the exact design.
The application consists of two parts: * simulation * visualization Simulation: I have a volume of cells I need to update every frame (e.g. some fluid or gas) using the GPU because of its parallel computing power. It's a big cubic array of data and I'd like to split it up into sub cubes and keep and update the data on different nodes. That is every node contains a certain sub volume and the different nodes only need to exchange the boundary data. Visualization: The visualization part would require volume rendering using a standard approach ala eqEvolve to parallelize. Every node would contribute a rendering of the data it has available locally. I have no idea whether Equalizer offers any features for doing such general purpose computing (that is, I haven't found any) and I'd like to know whether there is already anything built in or if there is anything planned. Also I have difficulties imagining how to express both parts of the application in the Node/Pipe/Window/Channel paradigm. I also have a related question regarding the network code: If I were to code the simulation part on my own, I'd need to send some specific data to each node from each adjacent node. Using the current network model my idea would be that each node has a "state" master object and nodes that are interested in the node's state (it would contain the boundary surface data for example) would subscribe to that object and sync to it every time they need to access the data. The question is how do I tell other nodes about my state node? Is the only way using custom commands? It would be nice if there was a way to do this transparently. I've seen there exists a method called becomeMaster(), but it only updates the former master object and not its slaves. My idea would have been to create the state objects at the app node first, all nodes map the general state object and each node then takes over ownership of its corresponding state object, but this obviously will run into issues using the current becomeMaster() method. That's a lot of text, I hope I was able to communicate my problem(s). I also hope that someone can help me with it and nudge me into the right directions. Also, if there is anything way too unclear, I'll be happy to elaborate on it. Thanks and cheers, Andreas Kirsch _______________________________________________ eq-dev mailing list [email protected] http://www.equalizergraphics.com/cgi-bin/mailman/listinfo/eq-dev http://www.equalizergraphics.com
