2001-04-26 19:31:55

by Eric S. Raymond

[permalink] [raw]
Subject: CML2 1.2.8 is available

The latest version is always available at http://www.tuxedo.org/~esr/cml2/

Release 1.2.8: Thu Apr 26 15:18:38 EDT 2001
* Major internal speedup; symbol evaluation is much faster now.

Symbol evaluation was the speed bottleneck in the configurator for quite a
while. Thanks to a reorganization of one of the central data structures,
it's now down in the profiler noise. As a result, many operations like
commits and file loading are now so fast that I've removed their twirly-baton
progress indicators.

The new slowdown king is the algebraic-simplification code for constraints.
Greg Banks and I have been kicking around some ideas about common-subexpression
elimination that might lead to big speedups here as well, but it's a complex
change that might take a while.

It's beginning to look like I might be able to remove the fastmode crock
after the next round of tuning.
--
<a href="http://www.tuxedo.org/~esr/">Eric S. Raymond</a>

Militias, when properly formed, are in fact the people themselves and
include all men capable of bearing arms. [...] To preserve liberty it is
essential that the whole body of the people always possess arms and be
taught alike, especially when young, how to use them.
-- Senator Richard Henry Lee, 1788, on "militia" in the 2nd Amendment