Readme for mwc-random-0.5.1.2
Efficient, general purpose pseudo-random number generation
----------------------------------------------------------
This package provides the System.Random.MWC module, a Haskell library
for generating high-quality pseudo-random numbers in a space- and
time-efficient way.
Performance
-----------
This library has been carefully optimised for high performance. To
obtain the best runtime efficiency, it is imperative to compile
libraries and applications that use this library using a high level of
optimisation.
Suggested GHC options:
-O -fvia-C -funbox-strict-fields
To illustrate, here are the times (in seconds) to generate and sum 250
million random Word32 values, on a laptop with a 2.4GHz Core2 Duo
P8600 processor, running Fedora 11 and GHC 6.10.3:
no flags 200+
-O 1.249
-O -fvia-C 0.991
As the numbers above suggest, compiling without optimisation will
yield unacceptable performance.
Get involved!
-------------
Please feel welcome to contribute new code or bug fixes. You can
fetch the source repository from here:
darcs get http://darcs.serpentine.com/mwc-random
Authors
-------
Bryan O'Sullivan <bos@serpentine.com>