On Thu, 3 Sep 2009 10:28:09 -0400 Daniel Molina Wegener <d...@coder.cl> wrote: >2009/9/3 Scott Bennett <benn...@cs.niu.edu> > >> What exactly does "cc -march=prescott" enable cc to do? Does it >> include >> instruction scheduling for the pipeline structure of the Prescott CPUs? >> Does >> it include other options, e.g., "-mmmx -msse -msse2 -msse3"? >> Thanks in advance for any information on the above! >> > >According to the GCC manual page, it enables MMX, SSE, SSE2 and SSE3 >instruction set support. > >Try: >$ man 1 gcc >/prescott > Thanks much for your reply. This is very bizarre. I think I've looked at that page at least 50 times in the past few years and somehow never saw those lines. Sigh. :-} I've had CPUTYPE=prescott in my /etc/make.conf for a long time now, and I recently installed math/atlas-devel. I wonder if specifying CPUTYPE=prescott may have caused it to choose the wrong components to include in the final version of libalapack. If so, then I should rebuild it without CPUTYPE=prescott.
Scott Bennett, Comm. ASMELG, CFIAG ********************************************************************** * Internet: bennett at cs.niu.edu * *--------------------------------------------------------------------* * "A well regulated and disciplined militia, is at all times a good * * objection to the introduction of that bane of all free governments * * -- a standing army." * * -- Gov. John Hancock, New York Journal, 28 January 1790 * ********************************************************************** _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"