Hi,

I just tried the following.

1. Take a clean Sage-4.0.2 tarball and edit SAGE_ROOT/spkg/install
replacing the line

time make -f standard/deps $1

by

time make -j20 -f standard/deps $1

2. make.  This builds a whole bunch of different spkg's in parallel.
At one point spkg/install
gets overwritten.  At another point something fails and the build fails.

3. Changed spkg/install again to use "-j20".  Built some more by typing "make".

4. Again it fails eventually, after building most of sage pretty
quickly.   Finally, I change
spkg/install back to the default (no -j20), and type "make".  The
build finishes and Sage works.

This may be of interest to people who are interested in doing more
efficient Sage builds.


William


-- 
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org

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