Dear Wien users; I'm running a 16 atom cell in two different machines (same parameters): SGI Origin 3000 (Operating System IRIX6.5.20f) DEC/Alpha (Operating System TRU64 v5.1) In the 3000 the memory requirements for lapw1c are 1OG, whereas in the Alpha are 550M. Is this 3 orders of magnitude difference in memory requirements reasonable? Regards, Harry Gotsis