computer science - Searching for a distributed algorithm to distribute some objects -


i'm searching algorithm solve following problem:

there n software components able communicate on multicast. there pool m objects. every sw component knows pool contains. objects have different values. depending on value want distribute objects sw components. means: objects greater value have preferred, objects lower value have neglected (for example when sw components can't take more objects).

it important, no object distributed more once. when 1 object assigned sw component must not assigned sw component.

furthermore want implement whole thing distributed algorithm, means without central unit executes distribution.

any ideas?

  1. one solution implement mutual exclusion algorithm (a simple 1 bakery algorithm) , each sw takes highest object when it's turn comes. (this mutual exclusion writing files)
  2. another 1 involve lot of communication between nodes. let's suppose general case n>=m. suppose each sw takes n/m components takes highest value , multicasts rest of x components x sw , additional value max of components *casted. receiving sw see if value bigger received , exchange , delete value list insert it;s old value. cast components max calculated same x sw components. idea set x of sw communicate each other until every node has different value. have few of x sets. of course algorithm must refined every sw has different value , prove happed can sure.

but wanted , idea gave 2. hope helps. implementation of algorithm in openmpi (with c or c++). @ least implemented distributed algorithms in openmpi (and lam mpi it's obsolete).


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