When I was executing the execution file 'fdm.x' which actually I haven't made, I successfully compiled it (I had used -i-static option because of library problem) but I got the error message as follows. forrtl:No such file or directory forrtl:severe(29):file not found, unit 51, file /fdm.d/fort.51 Image PC RoutineLine Source fdm.x0000000000463147 Unkonwn Unkonwn Unkonwn fdm.x000000000046150E Unkonwn Unkonwn Unkonwn fdm.x000000000043AA4C Unkonwn Unkonwn Unkonwn fdm.x0000000000411247 Unkonwn Unkonwn Unkonwn fdm.x0000000000410EBQ Unkonwn Unkonwn Unkonwn fdm.x00000000004219EE Unkonwn Unkonwn Unkonwn fdm.x0000000000407306 Unkonwn Unkonwn Unkonwn fdm.x0000000000402FF2 Unkonwn Unkonwn Unkonwn fdm.x0000000000402E2A Unkonwn Unkonwn Unkonwn libc.so.600002AAAAAD3555AA Unkonwn Unkonwn Unkonwn fdm.x0000000000402D6A Unkonwn Unkonwn Unkonwn I thought that this may be the problem with reading the file in when my file running on. Do you have any idea? S.G.Kim.