Changes between Version 69 and Version 70 of Documentation/FAQ


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Timestamp:
Oct 23, 2006, 2:51:18 PM (14 years ago)
Author:
anonymous
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  • Documentation/FAQ

    v69 v70  
    319319On the 64 node grid, I dont think you will be able to achieve isolation even with -12 dBm , you may still need some noise.
    320320
    321 What the physical distance between the nodes on sb9 and those on the main grid?
     321What the physical distance between the nodes on the main grid?
    322322--------------------------------------------------------------------------------
    323 sb9 is a 64 node grid with dimensions of ~8 m by 8 m. The 400 node main grid is ~20 m by 20 m
    324 
    325 
    326 What is the wireless topology of sb9? Is multihop possible?
     323The 400 node main grid is ~20 m by 20 m. Node separation is 1m.
     324
     325
     326Is multihop possible on the grid?
    327327-------------------------------------------------------------------------------------------------------------------
    328328Using default power levels on the cards, every node can hear everyone else directly (all are one hop).
    329 For multihop topologies, we normally use noise injection on sb9. For further details you can refer to the link `HowTo/UseNoise`:trac:
     329For multihop topologies, we normally use noise injection or MAC filtering. For further details you can refer to the link `HowTo/UseNoise`:trac:
    330330which will provide a pointer on the kinds of topologies possible with the current noise antenna positions and power levels.
    331331 
     
    346346 * Try a smaller set of nodes.  If a node in your group consistently throws errors, leave it out and use another.  Email the coordinates of the deffective node to the user list with the experiment ID of the incomplete imaging procedure.
    347347
    348 Why can't I image 400 node?
    349 ---------------------------
    350 The nodehandler is still a work in progress.  It currently supports, at most, 200 nodes in an experiment (this includes imaging).  If your experiment requires 400 nodes and you do not require the nodehandler, you can image a subset (~100) at a time to ensure your image is installed on all of your nodes correctly.
    351348
    352349}}}