# MatrixBenchmark updated

**URL:** <https://www.ruby-forum.com/t/matrixbenchmark-updated/89513>\
**Category:** Ruby\
**Created:** [March 20, 2007, 11:24pm UTC](https://www.ruby-forum.com/t/matrixbenchmark-updated/89513 "2007-03-20T23:24:11Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![MSEdward\_SEdS\_Bora](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/7bcc69/32.png) [@MSEdward\_SEdS\_Bora](https://www.ruby-forum.com/u/MSEdward_SEdS_Bora)\
**Post date:** [March 20, 2007, 11:24pm UTC](https://www.ruby-forum.com/t/matrixbenchmark-updated/89513/1 "2007-03-20T23:24:11Z")

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I’ve made a number of improvements to my Matrix benchmark over the past  
two days, and I think it’s ready for public consumption. First of all, I  
switched the repository from CVS to SVN, so to get it, you’ll need to do

svn checkout svn://rubyforge.org/var/svn/cougar/MatrixBenchmark

Changes: aside from some cleanups in the build script, the major change  
is that it now generates and inverts a (rational) Hilbert matrix. This  
matrix is so ill-conditioned that you don’t even want to think about  
inverting it with floating point arithmetic. I ran it with jRuby and  
with Ruby 1.8.6 patch level 0, plus I profiled the Ruby interpreter on  
Ruby 1.8.6. It’s spending a fair amount of time in the garbage collector  
and in the integer divide routines now, which is a good thing. I may  
attempt to run it with XRuby, Cardinal and Rubinius next weekend, but if  
you happen to be a Ruby implementor and want to beat me to it, go right  
ahead.

And just in case you happen to be or know a student who’s interested in  
Ruby, the deadline for applying to Google Summer of Code is only four  
days away! Head over to

[http://groups.google.com/group/google-summer-of-code-announce/web/guide-to-the-gsoc-web-app-for-student-applicants](http://groups.google.com/group/google-summer-of-code-announce/web/guide-to-the-gsoc-web-app-for-student-applicants)

and

[http://www.rubycentral.org/projects/soc2007/ideas](http://www.rubycentral.org/projects/soc2007/ideas)

for more details. And tell them Hilbert sent you. 🙂

–  
M. Edward (Ed) Borasky, FBG, AB, PTA, PGS, MS, MNLP, NST, ACMC(P)  
[http://borasky-research.blogspot.com/](http://borasky-research.blogspot.com/)

If God had meant for carrots to be eaten cooked, He would have given  
rabbits fire.