This Python module is an interface to MTGP, the Mersenne Twister for Graphic Processors (MTGP version 1.1.2)
by Mutsuo Saito and Makoto Matsumoto (Hiroshima University).
For more details see http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/MTGP/ and the reference below.
The module provides random generators for uniform, Normal and Poisson distributions.
Only 64-bit floating numbers are generated.
The random generator for the Poisson distribution exists in two forms. In the first one,
the distribution is computed for a single value of the characteristic mean 'lambda'.
In the second form, each generated random number can have is own mean value 'lambda'.
This form is particularly suited for generating Photon noise for a large image.
The module implements and provides the following methods:
* init(seed) : Initialize the module
* uniform(n) : Generates n uniformly distributed random numbers in the real interval ]0,1[
* normal(n) : Generates two random series of size n Normally distributed
* poisson(lambda,n) : Generates a Poisson distribution of mean lambda and size n
* poisson_multlamb(lambda) : As poisson() with multiple values of lambda (one for each generated random number).
* free() : Free the state of the pseudo-random number generator
* seed(value) : Initialize the seed value
* block_seeds(seeds) : Initialize the seed associated with each block
* block_num() : Return the number of blocks
* device() : Return the device index
For a complete example see pymtgp64_test.py
Reference: Mutsuo Saito, Makoto Matsumoto, Variants of Mersenne Twister Suitable for Graphic Processors,
Transactions on Mathematical Software, 39 (2013), pp. 12:1--12:20, DOI:10.1145/2427023.24270249
The compilation requires CUDA Toolkit (version 5.0 or later).
Edit appropriatley the Makefile. You must in particular define the path
where CUDA libraries and header files are installed (CUDAPATH).
You may also want to tune the constants that are defined in mtgp64-const.h
To compile the module type :
and to install it type:
python setup.py install --home=$HOME/
Depending on your system, this will install the module in $HOME/lib/python or in $HOME/lib64/python
You can also install it as root for all the users, in that case type:
sudo python setup.py install
You can finally do a complete test by typping:
This will run the script named pymtgp64_test.py
Copyright (c) 2013 by R. Samadi (LESIA - Observatoire de Paris)
This is a free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This software is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this code. If not, see <http://www.gnu.org/licenses/>.
Copyright (c) 2009, 2010 Mutsuo Saito, Makoto Matsumoto and Hiroshima
Copyright (c) 2011, 2012 Mutsuo Saito, Makoto Matsumoto, Hiroshima
University and University of Tokyo.
All rights reserved.
Redistribution and use in source and binary forms, with or without
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