Re: [Numpy-discussion] [Numpy] quadruple precision

2012-03-02 Thread Paweł Biernat
Charles R Harris charlesr.harris at gmail.com writes: The quad precision library has been there for a while, and quad precision is also supported by the Intel compiler. I don't know about MSVC. Intel has been working on adding quad precision to their hardware for several years and there

Re: [Numpy-discussion] [Numpy] quadruple precision

2012-03-02 Thread Nathaniel Smith
On Mar 2, 2012 10:48 AM, Paweł Biernat pw...@wp.pl wrote: The portability is broken for numpy.float128 anyway (as I understand, it behaves in different ways on different architectures), so adding a new type (call it, say, quad128) that properly supports binary128 shouldn't be a drawback. Later

Re: [Numpy-discussion] [Numpy] quadruple precision

2012-03-02 Thread Pierre Haessig
Le 02/03/2012 14:39, Nathaniel Smith a écrit : If/when someone adds __float128 support to numpy we should really just call it float128 I agree! Other types could become float80_128 and float80_96, as mentioned about a week ago by Matthew. -- Pierre signature.asc Description: OpenPGP

Re: [Numpy-discussion] Possible roadmap addendum: building better text file readers

2012-03-02 Thread Frédéric Bastien
Hi, mmap can give a speed up in some case, but slow down in other. So care must be taken when using it. For example, the speed difference between read and mmap are not the same when the file is local and when it is on NFS. On NFS, you need to read bigger chunk to make it worthwhile. Another

Re: [Numpy-discussion] Possible roadmap addendum: building better text file readers

2012-03-02 Thread Lluís
Frédéric Bastien writes: Hi, mmap can give a speed up in some case, but slow down in other. So care must be taken when using it. For example, the speed difference between read and mmap are not the same when the file is local and when it is on NFS. On NFS, you need to read bigger chunk to

[Numpy-discussion] Bus error for Debian / SPARC on current trunk

2012-03-02 Thread Matthew Brett
Hi, Sorry that this report is not complete, I don't have full access to this box but, on a Debian squeeze machine running linux 2.6.32-5-sparc64-smp: nosetests ~/usr/local/lib/python2.6/site-packages/numpy/lib/tests/test_io.py:TestFromTxt.test_user_missing_values test_user_missing_values

Re: [Numpy-discussion] Bus error for Debian / SPARC on current trunk

2012-03-02 Thread Charles R Harris
On Fri, Mar 2, 2012 at 4:36 PM, Matthew Brett matthew.br...@gmail.comwrote: Hi, Sorry that this report is not complete, I don't have full access to this box but, on a Debian squeeze machine running linux 2.6.32-5-sparc64-smp: nosetests

Re: [Numpy-discussion] Bus error for Debian / SPARC on current trunk

2012-03-02 Thread Matthew Brett
Hi, On Fri, Mar 2, 2012 at 9:05 PM, Charles R Harris charlesr.har...@gmail.com wrote: On Fri, Mar 2, 2012 at 4:36 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, Sorry that this report is not complete, I don't have full access to this box but, on a Debian squeeze machine running