Dear Sir, I am using a 64-bit AMD apteron cluster with 8 GB RAM (RHEL platform). I face "relocation overflow" and "relocation truncated to fit errors" when I compile big fortran 77 codes using f77/g77 (even with ifort and pathf95) on it. Though it compiles successfully it cannot assemble or link the executables. I understand this may be because of large arrays or so. But the executable size is not more than 2GB. so I could not run my codes with large dimensions. Can you please tell me what options I can use while compiling these kind of codes. Sometimes, ulimit command or -m32 option worked but when I run the executable it simply dumps the core. Please suggest me what can I do to get rid of these problems?. Note: The gcc version I am using is gcc-3.2.3-42 Thanks in advance. -- ==================================== H.S.Nataraj, Senior Research Fellow, Indian Institute of Astrophysics, II Block, Koramangala, Bangalore, India - 560034 Telephone : +9180-25530672 extn:273 +91 9449658397 (mobile) Fax : +91 80 25534043 Webpage : http://www.iiap.res.in/personnel/nataraj/ ====================================