On other UNIX machines, CDC MIPS, Sun, and Convex, I have used a timing subroutine called "etime". Is there an equivalent routine on the IBM RISC 6000 (AIX)? I am coding in FORTRAN. Thanks --------- Sherry Heitchew Academic Computing | BITNET: sherry at virginia University of Virginia | INTERNET: sherry at virginia.edu Phone: 804-924-7885