>We use an alternate GPFS running on SuSE and tweak the hardware a bit >because we find that the number of channels, not necessarily type, but >number can significantly alter performance through better data >scheduling/routing without adding overhead. Just curious, what apps are you >trying to run on these small clusters, how many nodes/processors/channels? Would you be so kind to elaborate more on this? What is an "alternate GPFS"? What hardware you have in place? what did you tweak specifically and where? -- Warm regards, Michael Green