[eq-dev] what is sent on network in Equalizer?

[Stefan Eilemann]

Hi,

On 16. Dec 2008, at 21:31, JUNGLEE (via Nabble) wrote:

> Q1: When running an Equalizer application on a linux cluster, what  
> data are exchanged between nodes in the cluster? I am not sure what  
> kinds of data are exchanged by Equalizer. Are they graphics  
> primitives, kind of message, thread data, parts, or anything else?

All rendering in Equalizer is executed locally. Equalizer itself  
exchanges messages over the network, to send task, images for  
compositing and swapbarrier commands over the network.

In addition the application sends data for mapping and synchronizing  
eq::net::Objects.

> Q2: Also, I was wondering how Equalizer processes several input  
> events. For example, If a user gives a mouse event (through GLUT?)  
> in a head workstation, is it sent to each node in cluster? or if  
> Equalizer doesn't distribute inputs, how does it process and  
> synchronize user's inputs?

The events are sent to the application node. The whole process is  
explained in detail in Section 6.1., Event Handling, in the  
Programming Guide.


Cheers,

Stefan.

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