Dear Numpy devels, First of all, thank you for the great job done so far! We've been updating our MDP module, and had a chance to appreciate it.
We found an issue in the random module: the random state contains an array of int32 or int64 depending on the architecture, making it not portable. For example, try the following on two machines with different architecures: Python 2.4.4 (#2, Jan 13 2007, 17:50:26) [GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import numpy >>> import platform >>> import pickle >>> >>> platform.architecture() ('32bit', '') >>> >>> state = numpy.random.get_state() >>> pickle.dump(state, file('/tmp/random_state.pic','w')) >>> numpy.random.permutation(numpy.arange(10)) array([8, 6, 3, 1, 0, 5, 7, 4, 2, 9]) >>> Python 2.5 (r25:51908, Mar 19 2007, 13:41:07) [GCC 4.1.0 (SUSE Linux)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import numpy >>> import platform >>> import pickle >>> >>> platform.architecture() ('64bit', 'ELF') >>> >>> state = pickle.load(file('/tmp/random_state.pic','r')) >>> numpy.random.set_state(state) >>> numpy.random.permutation(numpy.arange(10)) array([3, 9, 4, 8, 1, 6, 2, 0, 5, 7]) >>> Is there any known workaround? Thanks! -- Tiziano Zito Institute for Theoretical Biology Humboldt-Universitaet zu Berlin Invalidenstrasse, 43 10115 Berlin, Germany Pietro Berkes Gatsby Computational Neuroscience Unit Alexandra House, 17 Queen Square London WC1N 3AR, United Kingdom _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion