> I don't think this is correct. Jarl's document seems to make an explicit > point that there is only one BL (Parent) per Piper program running. So > the DL will only communicate with one BL. The BL itself will be > responsible for splitting processes up using the whole Mother to Baby > thing. At least, this is my understanding. There will be one grandma-BL per Piper program running, however there will be many mother-BL, one per machine, and many baby-BL per machine. Is that what you meant? Jean-Marc -- Jean-Marc Valin Universite de Sherbrooke - Genie Electrique valj01 at gel.usherb.ca