[Numpy-discussion] sprint: IRC chat?
Friends, Are we meeting over IRC chat? I'd like to help with the sprint but remotely. I have to leave LA today, unfortunately. Thanks! Damian ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] sprint: IRC chat?
On Sat, Aug 23, 2008 at 09:42:45AM -0600, Damian Eads wrote: Are we meeting over IRC chat? I'd like to help with the sprint but remotely. I have to leave LA today, unfortunately. I am on #scipy on freenode. Gaël ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
[Numpy-discussion] How to replace a loop for a ufunc (to test optimizations)
Yesterday at the SciPy conference I suggested it would be a good idea to
add a function to replace one of the inner loops in a ufunc so that an
extension module could test an optimized inner loop more easily.
It turns out that this is such a good idea that it's actually already in
the code. The UFUNC_API call that does this is called:
PyUFunc_ReplaceLoopBySignature
You would use it something like this
static void
_new_add_loopfunc(char **args, intp *dimensions, intp *steps, void *func)
{
/* my new faster code */
}
Then in the extension module (either in the init or in a method call)
something like this:
PyUFuncObject *ufunc;
PyUFuncGenericFunction oldloopfunc, dummy;
int signature[3] /* This should be the number of arguments to the
ufunc you are replacing */
PyObject *module, *dict;
module = PyImport_ImportModule(umath);
dict = PyModule_GetDict(module);
ufunc = PyDict_GetItemString(dict, add) /* get the ufunc where you
want to replace one of the loops */
signature[0] = NPY_DOUBLE;
signature[1] = NPY_DOUBLE;
signature[2] = NPY_DOUBLE;
if (PyUFunc_ReplaceLoopBySignature(ufunc, _new_add_loopfunc, signature,
old1dloop) 0) {
PyErr_SetString(PyExc_RuntimeError, problem replacing loop);
/* error return i.e. return NULL or return or return -1*/
}
Then to restore the original function:
if (PyUFunc_ReplaceLoopBySignature(ufunc, old1dloop, signature, dummy)
0) {
/* error */
}
Remember to use import_umath() in the module you are using the UFUNC_API
in. Now, lot's of folks should be able to test optimizations.
-Travis
___
Numpy-discussion mailing list
Numpy-discussion@scipy.org
http://projects.scipy.org/mailman/listinfo/numpy-discussion
[Numpy-discussion] Report from SciPy
Hi everybody, Robert K, Chuck H, Stefan VdW, Jarrod M, David C, and I had a nice discussion about the future directions of NumPy. We resolved some things and would like community feedback on them if there are opinions. * we will be moving to time-based releases (at least 2 times a year -- November / May) with major changes not accepted about 4 weeks before the release. * The releases will be numbered major.minor.bugfix * There will be no ABI changes in minor releases * There will be no API changes in bugfix releases * Any API changes in minor releases will be done in a backward compatible fashion (possibly with deprecations). * Thus 1.2 will not break ABI compatibility but will add new API features. * We will push the generalized ufuncs off to 1.3 * NumPy 2.0 will be a library and will not automagically import numpy.fft * We will suggest that other libraries use from numpy import fft instead of import numpy as np; np.fft * We will apply most of Andrew Dalke's speed up patches but will keep ctypeslib import * We will remove automatic import of numpy.doc from trunk * NumPy 1.2 will come out shortly after the conference (rc1 on Sunday). * SciPy 0.7b1 will come out after the sprints. If there is anything else I missed from those who were there, please let us all know. By the way, as promised, the NumPy book is now available for download and the source to the book is checked in to the numpy SVN tree: http://svn.scipy.org/svn/numpy/trunk/numpy/doc/numpybook Best regards, -Travis ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
[Numpy-discussion] Remove ParametricTestCase from numpy.testing
Hey all, Now that we have switched to Nose as a test framework, we should look into deprecating ParametricTestCase. Alan, have you looked into this before? Cheers Stéfan ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] Report from SciPy
2008/8/23 Travis E. Oliphant [EMAIL PROTECTED]: By the way, as promised, the NumPy book is now available for download and the source to the book is checked in to the numpy SVN tree: http://svn.scipy.org/svn/numpy/trunk/numpy/doc/numpybook We just reorganised the docs somewhat, so this URL is now http://svn.scipy.org/svn/numpy/trunk/doc/numpybook/ A great big thanks to Travis for releasing his book to the community! Regards Stéfan ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] Report from SciPy
On Sat, 23 Aug 2008, Stéfan van der Walt wrote: 2008/8/23 Travis E. Oliphant [EMAIL PROTECTED]: By the way, as promised, the NumPy book is now available for download and the source to the book is checked in to the numpy SVN tree: http://svn.scipy.org/svn/numpy/trunk/numpy/doc/numpybook We just reorganised the docs somewhat, so this URL is now http://svn.scipy.org/svn/numpy/trunk/doc/numpybook/ A great big thanks to Travis for releasing his book to the community! Agreed!!! I do not see any pdf file etc. of his book at the above link. Cheers, Jim (purchaser of his book before release).___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] Report from SciPy
On Sat, Aug 23, 2008 at 7:04 PM, James A. Benson [EMAIL PROTECTED] wrote: On Sat, 23 Aug 2008, Stéfan van der Walt wrote: 2008/8/23 Travis E. Oliphant [EMAIL PROTECTED]: By the way, as promised, the NumPy book is now available for download and the source to the book is checked in to the numpy SVN tree: http://svn.scipy.org/svn/numpy/trunk/numpy/doc/numpybook We just reorganised the docs somewhat, so this URL is now http://svn.scipy.org/svn/numpy/trunk/doc/numpybook/ A great big thanks to Travis for releasing his book to the community! Agreed!!! I do not see any pdf file etc. of his book at the above link. http://www.tramy.us/numpybook.pdf ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] Remove ParametricTestCase from numpy.testing
On Sat, Aug 23, 2008 at 4:49 PM, Stéfan van der Walt [EMAIL PROTECTED] wrote: Now that we have switched to Nose as a test framework, we should look into deprecating ParametricTestCase. Alan, have you looked into this before? Actually, it was removed right after the nose framework was working, but I think a decision was made to keep it around until 1.3 in case somebody was using it, so I put it back. :) After the 1.2 release it can just be deleted without any issues, I think. ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
