Category Archives: Coding

Operation Authorisation in AntOM

AntOM is a multilayer overlay. From the perspective of establishing and removing of neighbour relations, it can be viewed as multiple individual overlays. For each layer, the following operations relating to neighbourhood relations can happen: connecting to bootstrapping nodes (SDBOOT), actively establishing neighbour relation to another node (AESTNB), passively accepting an establishment request from another […]

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Creating a kernel call as well as a system call in Minix 3

Albeit important common principles exist, Minix 3 differentiates itself from other operating systems on many aspects. One such aspect is its microkernel design. While most OS adopt a monolithic kernel in which every process can do everything to everyone else, Minix 3 opts for a layered design. Its kernel layer, a.k.a microkernel, performs the most […]

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Error in OMNeT++ 4.1 over Ubuntu 11.10

Today I found out that simulations in OMNeT++ 4.1 won’t launch after I upgraded my Ubuntu to 11.10. I got the error message “Error during startup: No user interface (Cmdenv, Tkenv, etc.) found.” Fortunately Rudolf Hornig, the guy from OpenSim Ltd., gave out a solution just a day ago. Here is the solution: In Makefile.inc.in […]

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Pheromone Reinforcement: the Scratchbook

When reinforcing the pheromone, qualities of neighbours should be considered. A measured quality value is normalised to a heuristic value. The latter is then used to increase pheromone with a factor htp.

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