On 10 April 2011 13:10, Mag Gam <magaw...@gmail.com> wrote: > Oncer I build sage I plan to recompile numpy with Intel ICC because of > the big performance boost using MKL. Has anyone tried this before? > what sort of problems do you expect?
Lots of the code in Sage calls "gcc" directly, so even if you define the environment variable CC to icc, this does not mean icc will be always be used and gcc never used. I've tried compiling various bits of Sage with the Sun studio compiler, but that refuses to compile a lot of code in Sage. But I think the Intel compiler aims to be more like gcc, and not strive for compatibility with the C language, so you might be ok. I just tried to use the Sun compiler to build Numpy, but it fails RuntimeError: Broken toolchain: cannot link a simple C program It seems to be sending a lot of GCC specific flags to the Sun compiler. If you get problems, it might well be worth trying to build all of Sage with the Intel compiler. Perhaps you might want to put something like $ ln -s /usr/bin/icc /tmp/gcc PATH=/tmp:$PATH to make sure you get the Intel compiler, even if "gcc" is invoked/ Let us know how you get on. I'd be interested to hear. Dave -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
