Hello, For my Fortran-Code I use following in the COMMON-File: parameter(it=478,jt=303,kt=215,nphit=8,nphito=8) 1/vectr/phi(it,jt,kt,nphit),phio(it,jt,kt,nphito),prt(nphit), 2 resor(nphit),reref(nphit),urf(nphit),ustarv(it,jt,kt), 3 phic(it,jt,kt,6),cs(it,jt,kt),tracel(it,jt,kt), 4 csk(it,jt,kt), 6 conve(it,jt,kt),convn(it,jt,kt),convh(it,jt,kt), 7 smp(it,jt,kt),dtfals(nphit) I get an error like: size of variable 'vectr_' is too large With these parameters, it works fine: parameter(it=164,jt=52,kt=100,nphit=8,nphito=8) Does anybody know, if I have to adjust anything in the g77-source (like for large-unit-numbers)? Or did I anything wrong? Greetings! Fabian