Please do not reply directly to this email. All additional comments should be made in the comments box of this bug report. Summary: Review Request: tachyon - Parallel / Multiprocessor Ray Tracing System https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=217603 ------- Additional Comments From mtasaka@xxxxxxxxxxxxxxxxxxx 2006-11-29 08:42 EST ------- As I said in comment #1, both optimizations make debugging very difficult. * The former one (-fomit-frame-pointer) may make it impossible to debug by gdb. http://sources.redhat.com/gdb/current/onlinedocs/gdb_7.html * -ffast-math equals -fno-math-errno -funsafe-math-optimizations -fno-trapping-math -ffinite-math-only -fno-signaling-nans i.e. 1. this optimization means that you trust that there is no mistake like 'taking root of negative number' or so, which is very risky. 2. I don't know if this program needs accuracy, however, -funsafe-math-optimizations usually decreases precision of floating point calculation. -- Configure bugmail: https://bugzilla.redhat.com/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the QA contact for the bug, or are watching the QA contact. _______________________________________________ Fedora-package-review mailing list Fedora-package-review@xxxxxxxxxx http://www.redhat.com/mailman/listinfo/fedora-package-review