On Jan 20, 2012, at 05:25 , Jeroen Demeyer wrote: > Some observations from building sage-4.8 on a very fast system (32 > cores, 512G RAM) using "make -j64 -l32". > > First of all, apply the patch from #12329 to prune many unneeded > dependencies of the Sage library (needs_review by the way...): > > Total time for "make build" was 27 minutes, total time for "make doc" 14 > minutes, for a grand total of 41 minutes.
I tried this on my system (Mac Pro, Dual 6-core Xeon, 10.6.8, 24 GB RAM) with 4.8.rc0, using "-j24". For 'make build', I got real 23m34.692s user 159m17.675s sys 22m54.627s Lots of parallelism. For 'make doc', I got real 66m39.539s user 51m53.830s sys 15m51.766s So while there are a lot of threads active during most of the 'build', the 'doc' pass used essentially no parallelism. Is there a trick to getting the latter to work? The command I used is 'MAKE="make -j24" make doc'. Thanks! Justin -- Justin C. Walker, Curmudgeon at Large Institute for the Absorption of Federal Funds ----------- If it weren't for carbon-14, I wouldn't date at all. ----------- -- 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
