what options I should use to compile the code to behave the same as MIPS "f77 -O3 -n32 -r8 -static"

hunt4answer · ‎11-04-2004

Hi guys,

I am new to ifort. I am in the process to transfer from SGI UNIX to Red hat Linux. I am trying to compile a numerical model in Linux. I have been running this model on SGI, but the Linux results are quite different that what I have on SGI. The option I used on SGI is "f77 -w -O3 -n32 -r8 -static". Can anyone tell me what the equvilent option be for ifort. I tried "ifort -O3 -pc80 -r8 -static". Please help me.

Thanks

Steven_L_Intel1 · ‎11-04-2004

Try replacing -static with -save. -static means link against static libraries in Intel Fortran. I don't know what -n32 does. I suggest starting with -O2 (or just omit it). Opt levels aren't comparable across different vendors.

TimP · ‎11-04-2004

You may find that -xW -ftz -r8 -save is closer to what you want. I think -n32 implied abrupt underflow. Irix had nothing like -pc80. If I recall correctly, -Bstatic on Irix was like -static on linux, so Steve's comment may be correct there.

Message Edited by tim18 on 11-04-2004 02:58 PM

hunt4answer · ‎11-05-2004

Thanks for the quick response. I'll try this.

Jerry

hunt4answer · ‎11-10-2004

Guys,

-xW -r8 -save really does the work. Thanks for your help.

Jerry