Hello again, > - does SGE support checkpointing? How? SGE supports 3 levels of checkpointing -- 1. kernel level -- OS provides built-in support 2. user-level -- the object files link against the special library that provides checkpointing support 3. application level -- some applications, like ModelSim (an EDA application) provide an interface to checkpoint the state of execution. I don't know what kind of applications you want to run, and the OS support for checkpointing -- more info is needed. -Ron __________________________________________________ Do You Yahoo!? LAUNCH - Your Yahoo! Music Experience http://launch.yahoo.com