On Jul 23, 2007, at 22:57 , William Stein wrote:
> > On 7/23/07, Justin C. Walker <[EMAIL PROTECTED]> wrote: >> Tried this on both the PowerMac (2x2.7GHz G5) and MacBook Pro (2.33 >> Mhz Intel Core 2 Duo). SAGE built without an apparent problem on >> both systems. > > Excellent. This is great news. I also posted a slightly newer > alpha5 tarball > tonight here http://sage.math.washington.edu/home/was/sage2.7.1/, and > build-tested it on 32-bit debian, 64-bit debian, 32-bit fedora, 32- > bit mandriva, > OSX PowerPC, and OS X intel, and it built fine on all, and most > doctests pass. I'll verify this as well. >> FWIW, it seems to take at least 40-45 processes >> running simultaneously to do it! > > Interesting. At what point (or points) in the make processes does > this occur? > Building each spkg is a separate event, so it should be the case that > the process usage should depend entirely on which package you're > building. Maybe there > is one particularly strange package that tries to build using lots > of processes > at once? I have not tried to nail it down. The '40-45' number is a guess, based on the fact that I typically have ~75 processes running and at 120 'maxprocperuid', there are multiple "fork" failures. I will check this out (by cutting back to 120 processes max). > I've noticed that sort of performance difference for many years; > it's why I didn't like Macs until last year when Apple switched > from PowerPC to Intel. Now I really really like Macs. I'll try to poke around and see what I can find out. Initially, I didn't see such a big difference in timing, but recently, most things take 2x the time on the PowerMac. Of course, I have more going on with the latter, but that shouldn't really account for the difference. Justin -- Justin C. Walker, Curmudgeon-at-Large () The ASCII Ribbon Campaign /\ Help Cure HTML Email --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
