[Numpy-discussion] Numpy 2.0 schedule

Charles R Harris charlesr.harris at gmail.com
Thu Jan 27 12:36:34 EST 2011

On Thu, Jan 27, 2011 at 9:17 AM, Mark Wiebe <mwwiebe at gmail.com> wrote:

> On Thu, Jan 27, 2011 at 7:09 AM, Ralf Gommers <ralf.gommers at googlemail.com
> > wrote:
>> <snip>
>> The PIL test can still be fixed before the final 0.9.0 release, it looks
>> like we will need another RC anyway. Does anyone have time for this in the
>> next few days?
> I've attached a patch which fixes it for me.
>>   I took a shot at fixing the ABI compatibility, and if PyArray_ArrFunc
>>>>>> was the main issue, then that might be done.  An ABI compatible 1.6 with the
>>>>>> datetime and half types should be doable, just some extensions might get
>>>>>> confused if they encounter arrays made with the new data types.
>>>>>> Even if you fixed the ABI incompatibility (I don't know enough about
>>>>> the issue to confirm that), I'm not sure how much value there is in a
>>>>> release with as main new feature two dtypes that are not going to work well
>>>>> with scipy/other binaries compiled against 1.5.
>>>> I've recently gotten the faster ufunc NEP implementation finished except
>>>> for generalized ufuncs, and most things work the same or faster with
>>>> it. Below are some timings of 1.5.1 vs the new_iterator branch.  In
>>>> particular, the overhead on small arrays hasn't gotten worse, but the output
>>>> memory layout speeds up some operations by a lot.
>>>> Your new additions indeed look quite promising. I tried your
>> new_iterator branch but ran into a segfault immediately on running the tests
>> on OS X. I opened a ticket for it, to not mix it into this discussion about
>> releases too much: http://projects.scipy.org/numpy/ticket/1724.
> Is that a non-Intel platform?  While I tried to get aligned access right,
> it's likely there's a bug in it somewhere.
> Before we decide on a 1.6 release I would suggest to do at least the
>> following:
>> - review of ABI fixes by someone very familiar with the problem that
>> occurred in 1.4.0 (David, Pauli, Charles?)
>> - test on Linux, OS X and Windows 32-bit and 64-bit. Also with an MSVC
>> build on Windows, since that exposes more issues each release.
> All tests pass for me now, maybe it's a good time to merge the branch into
> the trunk so we can run it on the buildbot?
Might be better to merge your unadulterated stuff into master, make a 1.6
branch, and add the compatibility fixes in the branch. You can test branches
on the buildbot I think, at least that worked for svn, I haven't tried it
with github.

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