Posted in haskell, open source on November 6th, 2009 2 Comments »
I’m pleased to announce the availability of version 0.2 of my criterion library for Haskell performance evaluation.
Compared to version 0.1, this version has some significant changes.
The benchmarking API has been improved! If you’re benchmarking a pure function, you no longer need to feed it an Int to ensure that it won’t get thunked or let-floated. [...]
Posted in haskell, open source on October 9th, 2009 4 Comments »
I'm pleased to announce the availability of version 0.5 of text, a library that provides fast Unicode text handling for Haskell.
This version contains numerous changes compared to version 0.4, in three broad categories:
I made improvements to the performance of some common functions by, in many cases, more than 10x.I have substantially refined the API.Many bugs [...]
Posted in haskell, open source on September 30th, 2009 4 Comments »
And has prettier charts, too, thanks to a patch from Tim Docker.
If you already have criterion installed:
$ cabal update
$ cabal install –reinstall criterion
If you want to use criterion on a Mac:
$ cabal update
$ cabal install criterion -f-chart
Alas, on OS X, you’ll lack the ability to directly generate pretty chart images, but criterion will still output [...]
Posted in haskell, open source on September 29th, 2009 28 Comments »
I'm pleased to announce the availability of criterion, a new library for measuring the performance of Haskell code.
Compared to most other benchmarking frameworks (for any programming language, not just Haskell), criterion focuses on being easy to use, informative, and robust.
Here's a canonical benchmark-worthy function, which has the desirable properties of being both small and slow:
-- [...]
Thanks to the tireless work of Malcolm Wallace, all of the video from CUFP now appears to be up up Vimeo, including the keynote talk I gave.
Keynote: Real world Haskell. from Malcolm Wallace on Vimeo.
Posted in haskell, open source, science on September 19th, 2009 5 Comments »
I just released version 0.3.3 of the Haskell statistics library, which contains a very fast pseudo-random number generator.
The generator is an implementation of George Marsaglia’s MWC256 multiply-with-carry PRNG, which has a period of 28222 (for this reason, it’s sometimes referred to as MWC8222). It produces high-quality uniformly distributed pseudo-random numbers extremely quickly.
Here is a brief [...]
Posted in haskell, open source, science on September 12th, 2009 5 Comments »
A few weeks ago, I decided that I'd like to focus for a while on getting a 1.0 release of the Haskell text library ready. That work has gone fairly well so far. I've focused on making sure that I like the API, and that a few key functions have good performance characteristics.
One such function [...]
Posted in open source, scm on September 10th, 2009 2 Comments »
Several months ago, I wrote an article on evaluating revision control systems. It was initially published in ACM Queue a few weeks ago, and the article has now made its way (unchanged) to Communications of the ACM. I’m quite happy with how it turned out, and I hope that people will find it useful in [...]
Posted in haskell, open source on September 4th, 2009 4 Comments »
I was delighted to be invited to give the keynote talk at this year’s CUFP workshop in Edinburgh. My talk was this morning, and these are the slides I presented.
CUFP 2009 Keynote – Real World HaskellView more documents from Bryan O’Sullivan.
The video should be online some time next week, with any luck, but I hope [...]
Posted in linux, open source on March 24th, 2008 3 Comments »
I’ve been following Ian Lance Taylor’s updates on the status of gold, the new binutils linker, for a while, so when he announced that he’d added it to the binutils tree, I decided to make a little time to try it out.
I have a fairly large C++ application handy, so I tried linking it on [...]
