> >> 2) On HP-UX, the configure script can't work out how many CPUs I have, > >> what sort they are, but then tries to determine the cache size. This > >> causes the configure script to break. > >> > >> The macro for determining the number of CPUs > >> > >> http://git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=blob_plain; > >>f=m 4/ax_count_cpus.m4 > >> > >> is clearly only designed to work on linux and Mac. So it will fail on > >> other platforms, including Solaris which is supported, and HP-UX which > >> is not. > > > > It should fail gracefully, doesn't it? > > The configure script does fail gracefully on HP-UX when it tries to > determine the number of CPUs. > > checking the number of available CPUs... unable to detect (assuming 1) > checking the number of available CPUs... unable to detect (assuming 1) > > It should not take too much effort to actually get a number, so it does > not have to assume 1. > > There is a question about what do you want - is it physical processors, > cores or hardware threads? I'm not really sure the best way to do this. > On the Sun T5240 (t2.math), there are two physical processors, 16 cores > and 128 threads. So what number do we want - 2, 16 or 128? I suspect > cores is the most useful one, to have, but I'm not sure how to get that > information.
I agree cores should be the most useful one for now. Basically, whatever has L1 cache should be returned. Its all about cache for M4RI. > I would add there is some pretty negative comments about that macro for > determining the number of CPUs in the autoconf macro archive. Clearly it > is badly written. I think the way to approach it will be me re-write it, > then get some of the experts there to go over it. I agree it is not a nice script, I just lack the proper autotools skills to make it really nice. Maybe those experts will help :) Cheers, Martin -- name: Martin Albrecht _pgp: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8EF0DC99 _otr: 47F43D1A 5D68C36F 468BAEBA 640E8856 D7951CCF _www: http://www.informatik.uni-bremen.de/~malb _jab: martinralbre...@jabber.ccc.de --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
