On Sat, Aug 30, 2014 at 7:39 PM, Benjamin Root ben.r...@ou.edu wrote:
Random thoughts are the best kinds of thoughts! I didn't even know there was
a np.negative() function!
Me neither, I had to look it up :-)
-n
--
Nathaniel J. Smith
Postdoctoral researcher - Informatics - University of
On Fri, Aug 29, 2014 at 1:14 AM, Jaime Fernández del Río
jaime.f...@gmail.com wrote:
Hi,
I have just sent a PR (https://github.com/numpy/numpy/pull/5015), adding the
possibility of having frozen dimensions in gufunc signatures. As a proof of
concept, I have added a `cross1d` gufunc to
On Sat, Aug 23, 2014 at 12:40 AM, James Crist crist...@umn.edu wrote:
I suspected as much. This is actually part of my work on numerical
evaluation in SymPy. In its current state compilation to C and autowrapping
*works*, but I think it could definitely be more versatile/efficient. Since
numpy
On Thu, Aug 21, 2014 at 2:34 AM, James Crist crist...@umn.edu wrote:
All,
I have a C function func that takes in scalar arguments, and an array of
fixed dimension that is modified in place to provide the output. The
prototype is something like:
`void func(double a, double b, double c,
of the computation
time in the underlying lapack/blas library irregardless of whether the
interface is python-based or capi-based.
Matti
On 10/08/2014 8:00 PM, numpy-discussion-requ...@scipy.org wrote:
Date: Sat, 9 Aug 2014 21:11:19 +0100
From: Nathaniel Smith n...@pobox.com
Subject: Re: [Numpy
On Sat, Aug 9, 2014 at 8:35 PM, Matti Picus matti.pi...@gmail.com wrote:
Hi. I am working on numpy in pypy. It would be much more challenging for
me if you merged more code into the core of numpy,
Hi Matti,
I can definitely see how numpy changes cause trouble for you, and
sympathize. But, can
On Wed, Aug 6, 2014 at 2:19 AM, Charles R Harris
charlesr.har...@gmail.com wrote:
Hi All,
I've been looking to implement the @ operator from Python 3.5. Looking at
the current implementation of the dot function, it only uses a vector inner
product, which is either that defined in
On Wed, Aug 6, 2014 at 4:32 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
Should also mention that we don't have the ability to operate on stacked
vectors because they can't be identified by dimension info. One workaround
is to add dummy dimensions where needed, another is to add two
On Thu, Aug 7, 2014 at 12:24 AM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Wed, Aug 6, 2014 at 4:57 PM, Nathaniel Smith n...@pobox.com wrote:
On Wed, Aug 6, 2014 at 4:32 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
Should also mention that we don't have the ability
On 7 Aug 2014 00:41, Charles R Harris charlesr.har...@gmail.com wrote:
On Wed, Aug 6, 2014 at 5:33 PM, Nathaniel Smith n...@pobox.com wrote:
On Thu, Aug 7, 2014 at 12:24 AM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Wed, Aug 6, 2014 at 4:57 PM, Nathaniel Smith n...@pobox.com
On Thu, Aug 7, 2014 at 1:00 AM, Charles R Harris
charlesr.har...@gmail.com wrote:
Just to be clear, the '@' broadcasting differs from
the dot broadcasting, agreed?
Right, np.dot does the equivalent of ufunc.outer (i.e., not
broadcasting at all), while @ broadcasts.
-n
--
Nathaniel J. Smith
On Tue, Aug 5, 2014 at 1:58 PM, Jurgens de Bruin debrui...@gmail.com wrote:
Hi,
I am new to numpy so any help would be greatly appreciated.
I have two arrays:
array1 = np.arange(1,100+1)
array2 = np.arange(1,50+1)
How can I calculate/determine if array2 is a subset of array1
On Mon, Aug 4, 2014 at 11:12 PM, Julian Taylor
jtaylor.deb...@googlemail.com wrote:
On 05.08.2014 00:09, Matthew Brett wrote:
Hi,
On Mon, Aug 4, 2014 at 3:05 PM, Julian Taylor
jtaylor.deb...@googlemail.com wrote:
hi,
as numpy 1.9 is going to be a relative hard upgrade as indexing changes
On Sun, Jul 27, 2014 at 3:16 PM, RayS r...@blue-cove.com wrote:
At 02:04 AM 7/27/2014, you wrote:
You won't be able to do it by accident or omission or a lack of
discipline. It's not a tempting public target like, say, np.seterr().
BTW, why not throw an overflow error in the large float32
On Fri, Jul 25, 2014 at 5:56 PM, RayS r...@blue-cove.com wrote:
The important point was that it would be best if all of the methods affected
by summing 32 bit floats with 32 bit accumulators had the same Notes as
numpy.mean(). We went through a lot of code yesterday, assuming that any
numpy or
On Wed, Jul 23, 2014 at 9:57 PM, Robert Kern robert.k...@gmail.com wrote:
That's perhaps what you want, but numpy has never claimed to do this.
The numpy project deliberately chose (and is so documented) to make
its default integer type a C long, not a C size_t, to match Python's
default.
On Tue, Jul 15, 2014 at 7:40 PM, Aldcroft, Thomas
aldcr...@head.cfa.harvard.edu wrote:
On Sat, Jul 12, 2014 at 8:02 PM, Nathaniel Smith n...@pobox.com wrote:
OTOH, fixed length nul padded latin1 would be useful for various flat file
reading tasks.
As one of the original agitators
On Wed, Jul 16, 2014 at 7:47 PM, Ralf Gommers ralf.gomm...@gmail.com wrote:
On Wed, Jul 16, 2014 at 6:37 AM, Tony Yu tsy...@gmail.com wrote:
It seems like the defaults for `allclose` and `assert_allclose` should
match, and an absolute tolerance of 0 is probably not ideal. I guess this is
a
On Thu, Jul 17, 2014 at 10:05 PM, Chris Barker chris.bar...@noaa.gov wrote:
A bit of a higher-level view of the issues at hand.
Python has three relevant data types:
A unicode type (unicode in py2, str in py3)
A one-byte-per-char stringtype (py2 string)
A bytes type
The big problem is
On Thu, Jul 17, 2014 at 9:07 PM, josef.p...@gmail.com wrote:
On Wed, Jul 16, 2014 at 9:52 AM, Nathaniel Smith n...@pobox.com wrote:
What you say makes sense to me, and loosening the default tolerances won't
break any existing tests. (And I'm not too worried about people who were
counting
On Thu, Jul 17, 2014 at 11:10 PM, Charles G. Waldman char...@crunch.io wrote:
-1 on the 'arr' name. I think if we're going to support this function at all
(which I'm not convinced is a good idea), it should be np.fromsomething like
the other from* functions.
Maybe frommatlab?
I think
On Tue, Jul 15, 2014 at 4:29 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
Thinking more about it, the easiest thing to do might be to make the S dtype
a UTF-8 encoding. Most of the machinery to deal with that is already in
place. That change might affect some users though, and we might
On Fri, Jul 18, 2014 at 12:38 PM, josef.p...@gmail.com wrote:
On Thu, Jul 17, 2014 at 4:07 PM, josef.p...@gmail.com wrote:
If you mean by this to add atol=1e-8 as default, then I'm against it.
At least it will change the meaning of many of our tests in statsmodels.
I'm using rtol to check
On Fri, Jul 18, 2014 at 5:54 PM, Chris Barker chris.bar...@noaa.gov wrote:
This is why I see no downside to latin-1 -- if you don't use the 127 code
points, it's the same thing -- if you do, you get some extra handy
characters. The only difference is that a proper ascii type would not let
On Fri, Jul 18, 2014 at 3:02 PM, Charles G. Waldman char...@crunch.io wrote:
I greatly prefer np.mat to np.arr for this, FWIW
Unfortunately that's already taken...
--
Nathaniel J. Smith
Postdoctoral researcher - Informatics - University of Edinburgh
http://vorpus.org
On 18 Jul 2014 19:31, josef.p...@gmail.com wrote:
Making the behavior of assert_allclose depending on whether desired is
exactly zero or 1e-20 looks too difficult to remember, and which
desired I
use would depend on what I get out of R or Stata.
I thought your whole point here was that
On 18 Jul 2014 18:06, Alan G Isaac alan.is...@gmail.com wrote:
On 7/18/2014 12:45 PM, Mark Miller wrote:
If the true goal is to just allow quick entry of a 2d array, why not
just advocate using
a = numpy.array(numpy.mat(1 2 3; 4 5 6; 7 8 9))
It's even simpler:
a = np.mat(' 1 2 3;4 5 6;7
On Fri, Jul 18, 2014 at 11:44 PM, Pauli Virtanen p...@iki.fi wrote:
18.07.2014 23:53, Julian Taylor kirjoitti:
On 18.07.2014 19:47, Pauli Virtanen wrote:
[clip]
The other well-known alternative to bugfixes is to first commit it in
the earliest maintenance branch where you want to have it,
On 16 Jul 2014 10:26, Tony Yu tsy...@gmail.com wrote:
Is there any reason why the defaults for `allclose` and `assert_allclose`
differ? This makes debugging a broken test much more difficult. More
importantly, using an absolute tolerance of 0 causes failures for some
common cases. For example,
On 17 Jul 2014 11:51, Sebastian Berg sebast...@sipsolutions.net wrote:
On Mi, 2014-07-16 at 09:07 +0100, Nathaniel Smith wrote:
Weirdly, I never received Chuck's original email in this thread.
Should some list admin be informed?
I send some mails yesterday and they never arrived
On Tue, Jul 15, 2014 at 7:06 PM, Julian Taylor
jtaylor.deb...@googlemail.com wrote:
hi,
as you may know we want to release numpy 1.9 soon. We should have solved
most indexing regressions the first beta showed.
The remaining blockers are finishing the new __numpy_ufunc__ feature.
This feature
Weirdly, I never received Chuck's original email in this thread. Should
some list admin be informed?
I also am not sure what/where Julian's comments were, so I second the call
for context :-). Putting it off until 1.10 doesn't seem like an obviously
bad idea to me, but specifics would help...
On Sun, Jul 13, 2014 at 6:31 PM, Alexander Belopolsky ndar...@mac.com
wrote:
Also, the use of strings will confuse most syntax highlighters. Compare
the two options in this screenshot:
[image: Inline image 2]
I guess this is a minor issue for real code, but even IPython doesn't
(yet?)
On 12 Jul 2014 23:06, Charles R Harris charlesr.har...@gmail.com wrote:
As previous posts have pointed out, Numpy's `S` type is currently treated
as a byte string, which leads to more complicated code in python3. OTOH,
the unicode type is stored as UCS4, which consumes a lot of space,
especially
On Fri, Jul 11, 2014 at 8:39 AM, Julian Taylor
jtaylor.deb...@googlemail.com wrote:
Hi,
looking at https://github.com/numpy/numpy/issues/4857 I noticed that
np.zeros of a structured array of array of objects only initializes the
first element of if the embedded array to zero and leaves the
On 7 Jul 2014 14:12, Charles R Harris charlesr.har...@gmail.com wrote:.
Yes, what I did was like one big cherry-pick. But I think we end up in
the same place with two divergent branches. I think git history is just a
string of changesets and each changeset has a hash. Same hash, same
changeset,
On Mon, Jul 7, 2014 at 3:28 PM, Sebastian Berg
sebast...@sipsolutions.net wrote:
On Mo, 2014-07-07 at 09:50 -0400, josef.p...@gmail.com wrote:
On Mon, Jul 7, 2014 at 9:11 AM, Sebastian Berg
sebast...@sipsolutions.net wrote:
On Mo, 2014-07-07 at 08:25 -0400, Alan G Isaac wrote:
On Sun, Jul 6, 2014 at 9:35 PM, Daniel da Silva
var.mail.dan...@gmail.com wrote:
The idea is that there be a short-hand for creating arrays as there is for
matrices:
np.mat('.2 .7 .1; .3 .5 .2; .1 .1 .9')
It was suggested in GitHub issue #4817 in light that it would be beneficial
to
On Sun, Jul 6, 2014 at 9:14 PM, Benjamin Root ben.r...@ou.edu wrote:
as for the broadcasting issue, I can see it for the second case, but the
first case still doesn't sit right with me. My understanding of broadcasting
is to effectively *expand* an array to match the shape of another array (or
On 5 Jul 2014 09:23, Ralf Gommers ralf.gomm...@gmail.com wrote:
On Sat, Jul 5, 2014 at 10:13 AM, David Cournapeau courn...@gmail.com
wrote:
On Sat, Jul 5, 2014 at 11:25 AM, Charles R Harris
charlesr.har...@gmail.com wrote:
Ralf likes the speed of bento, but it is not currently maintained
On Sat, Jul 5, 2014 at 2:32 PM, Ralf Gommers ralf.gomm...@gmail.com wrote:
On Sat, Jul 5, 2014 at 1:54 PM, Nathaniel Smith n...@pobox.com wrote:
On 5 Jul 2014 09:23, Ralf Gommers ralf.gomm...@gmail.com wrote:
On Sat, Jul 5, 2014 at 10:13 AM, David Cournapeau courn...@gmail.com
wrote
On Sat, Jul 5, 2014 at 3:21 PM, David Cournapeau courn...@gmail.com wrote:
On Sat, Jul 5, 2014 at 11:17 PM, Nathaniel Smith n...@pobox.com wrote:
Maybe bento will revive and take over the new python packaging world!
Maybe not. Maybe something else will. I don't see how our support
On Fri, Jul 4, 2014 at 9:02 PM, Ralf Gommers ralf.gomm...@gmail.com wrote:
On Fri, Jul 4, 2014 at 10:00 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Fri, Jul 4, 2014 at 1:42 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
Sebastian Seberg has fixed one class of test
On Fri, Jul 4, 2014 at 9:33 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Fri, Jul 4, 2014 at 2:09 PM, Nathaniel Smith n...@pobox.com wrote:
On Fri, Jul 4, 2014 at 9:02 PM, Ralf Gommers ralf.gomm...@gmail.com
wrote:
On Fri, Jul 4, 2014 at 10:00 PM, Charles R Harris
On Fri, Jul 4, 2014 at 9:48 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Fri, Jul 4, 2014 at 2:41 PM, Nathaniel Smith n...@pobox.com wrote:
On Fri, Jul 4, 2014 at 9:33 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Fri, Jul 4, 2014 at 2:09 PM, Nathaniel Smith n
On Fri, Jul 4, 2014 at 10:31 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Fri, Jul 4, 2014 at 3:15 PM, Nathaniel Smith n...@pobox.com wrote:
On Fri, Jul 4, 2014 at 9:48 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Fri, Jul 4, 2014 at 2:41 PM, Nathaniel Smith n
On 5 Jul 2014 00:07, Charles R Harris charlesr.har...@gmail.com wrote:
On Fri, Jul 4, 2014 at 3:33 PM, Nathaniel Smith n...@pobox.com wrote:
On Fri, Jul 4, 2014 at 10:31 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Fri, Jul 4, 2014 at 3:15 PM, Nathaniel Smith n...@pobox.com
There's some discussion on python-ideas about making it possible for python
indexing to accept kwargs, eg
arr[1:2, foo=bar]
Since numpy is a very heavy user of indexing which might benefit from this,
I thought I should forward it here. If we have clear use cases for such a
feature then that
On 2 Jul 2014 20:12, Sturla Molden sturla.mol...@gmail.com wrote:
Julian Taylor jtaylor.deb...@googlemail.com wrote:
another thing, don't use int as the index to the array, use npy_intp
which is large enough to also index arrays 4GB if the platform
supports it.
With double* a 32-bit
On Mon, Jun 30, 2014 at 12:33 PM, Julian Taylor
jtaylor.deb...@googlemail.com wrote:
genfromtxt and loadtxt need an almost full rewrite to fix the botched
python3 conversion of these functions. There are a couple threads
about this on this list already.
There are numerous PRs fixing stuff in
On Mon, Jun 30, 2014 at 3:47 PM, Derek Homeier
de...@astro.physik.uni-goettingen.de wrote:
Does it make sense to keep maintaing both functions at all? IIRC the idea that
loadtxt would be the faster version of the two has been discarded long ago,
thus it seems there is very little, if anything,
On 30 Jun 2014 17:05, Chris Barker chris.bar...@noaa.gov wrote:
It's also an interesting
question whether they've fixed the unicode/binary issues,
Which brings up the how do we handle text/strings in numpy? issue. We
had a good thread going here about what the 'S' data type should be , what
On 10 Jun 2014 09:44, Sebastian Berg sebast...@sipsolutions.net wrote:
The other error looks a bit different because of the nonzero logic, but
probably is the same, i.e. also boolean indexing. The last one is the
change that `arr[[1,2,3,4]] = [1,2]` does not work anymore. A workaround
(maybe
On 10 Jun 2014 11:15, Sebastian Berg sebast...@sipsolutions.net wrote:
On Di, 2014-06-10 at 10:50 +0100, Nathaniel Smith wrote:
On 10 Jun 2014 09:44, Sebastian Berg sebast...@sipsolutions.net
wrote:
The other error looks a bit different because of the nonzero logic,
but
probably
On Thu, Jun 5, 2014 at 2:29 AM, Travis Oliphant tra...@continuum.io wrote:
At some point there *will* be a NumPy 2.0. What features go into NumPy
2.0, how much backward compatibility is provided, and how much porting is
needed to move your code from NumPy 1.X to NumPy 2.X is the real user
On Thu, Jun 5, 2014 at 3:36 AM, Charles R Harris
charlesr.har...@gmail.com wrote:
@nathaniel IIRC, one of the objections to the missing values work was that
it changed the underlying array object by adding a couple of variables to
the structure. I'm willing to do that sort of thing, but it
On Thu, Jun 5, 2014 at 3:24 PM, David Cournapeau courn...@gmail.com wrote:
On Thu, Jun 5, 2014 at 2:51 PM, Charles R Harris charlesr.har...@gmail.com
wrote:
On Thu, Jun 5, 2014 at 6:40 AM, David Cournapeau courn...@gmail.com
wrote:
IMO, what is needed the most is refactoring the internal to
On Wed, Jun 4, 2014 at 7:18 AM, Travis Oliphant tra...@continuum.io wrote:
Even relatively simple changes can have significant impact at this point.
Nathaniel has laid out a fantastic list of great features. These are the
kind of features I have been eager to see as well. This is why I have
On Wed, Jun 4, 2014 at 12:33 AM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Tue, Jun 3, 2014 at 5:08 PM, Kyle Mandli kyle.man...@gmail.com wrote:
Hello everyone,
As one of the co-chairs in charge of organizing the birds-of-a-feather
sesssions at the SciPy conference this year, I
I sometimes do
pip install pandas==0.14.0
This requires you know the version number, but is still much easier than
the arcane mutterings that are otherwise needed if you want to be fully
correct (pull in new dependencies, etc.).
-n
On 30 May 2014 23:31, Matthew Brett matthew.br...@gmail.com
If you really want to use complicated command line switches I think the
correct ones are:
pip install -U --no-deps pandas
pip install pandas
(Yes, you have to run both commands in order to handle all cases correctly.)
-n
On 30 May 2014 23:54, Matthew Brett matthew.br...@gmail.com wrote:
Hi,
Hi Stefan,
Allocating a new PyArrayObject isn't terribly expensive (compared to
all the other allocations that Python programs are constantly doing),
but I'm afraid you have a more fundamental problem. The reason there
is no supported API to change the storage pointer of a PyArrayObject
is that
Hi Stefan,
One possibility that comes to mind: you may want in any case some way
to temporarily pin an object's memory in place (e.g., to prevent one
thread trying to migrate it while some other thread is working on it).
If so then the Python wrapper could acquire a pin when the ndarray is
On Thu, May 15, 2014 at 1:04 PM, rodrigo koblitz
rodrigokobl...@gmail.com wrote:
Buenos,
I'm reading Zuur book (ecology models with R) and try make it entire in
python.
Have this function in R:
M4 - gam(So ∼ s(De) + factor(ID), subset = I1)
the 's' term indicated with So is modelled as a
On Wed, May 7, 2014 at 7:11 PM, Sturla Molden sturla.mol...@gmail.com wrote:
On 03/05/14 23:56, Siegfried Gonzi wrote:
I noticed IDL uses at least 400% (4 processors or cores) out of the box
for simple things like reading and processing files, calculating the
mean etc.
The DMA
On 28 Apr 2014 20:22, Robert Kern robert.k...@gmail.com wrote:
C's rint() does not:
http://linux.die.net/man/3/rint
This is because there are many integers that are representable as
floats/doubles/long doubles that are well outside of the range of any
C integer type, e.g. 1e20.
By the
On Mon, Apr 28, 2014 at 11:25 AM, Michael Lehn michael.l...@uni-ulm.de wrote:
Am 11 Apr 2014 um 19:05 schrieb Sturla Molden sturla.mol...@gmail.com:
Sturla Molden sturla.mol...@gmail.com wrote:
Making a totally new BLAS might seem like a crazy idea, but it might be the
best solution in the
On Tue, Apr 29, 2014 at 12:52 AM, Sturla Molden sturla.mol...@gmail.com wrote:
On 29/04/14 01:30, Nathaniel Smith wrote:
I finally read this paper:
http://www.cs.utexas.edu/users/flame/pubs/blis2_toms_rev2.pdf
and I have to say that I'm no longer so convinced that OpenBLAS is the
right
On Tue, Apr 29, 2014 at 1:10 AM, Julian Taylor
jtaylor.deb...@googlemail.com wrote:
On 29.04.2014 02:05, Matthew Brett wrote:
Hi,
On Mon, Apr 28, 2014 at 4:30 PM, Nathaniel Smith n...@pobox.com wrote:
It would be really interesting if someone were to try hacking simple
runtime CPU detection
On Tue, Apr 29, 2014 at 1:05 AM, Matthew Brett matthew.br...@gmail.com wrote:
Hi,
On Mon, Apr 28, 2014 at 4:30 PM, Nathaniel Smith n...@pobox.com wrote:
On Mon, Apr 28, 2014 at 11:25 AM, Michael Lehn michael.l...@uni-ulm.de
wrote:
Am 11 Apr 2014 um 19:05 schrieb Sturla Molden sturla.mol
On Fri, Apr 25, 2014 at 12:00 AM, Charles R Harris
charlesr.har...@gmail.com wrote:
Cool. After all these long years... Now all we need is a box running tests
for CI.
There is
http://www.appveyor.com/
though I haven't tried doing anything with it yet... (yes it says
.NET at the top, but then
On Wed, Apr 23, 2014 at 6:22 AM, Matthew Brett matthew.br...@gmail.com wrote:
Hi,
I'm exploring Mingw-w64 for numpy building, and I've found it gives a
slightly different answer for 'exp' than - say - gcc on OSX.
The difference is of the order of the eps value for the output number
(2 * eps
On 17 Apr 2014 01:57, onefire onefire.mys...@gmail.com wrote:
What I cannot understand is why savez takes more than 10 times longer
than saving the data to a npy file. The only reason that I could come up
with was the computation of the crc32.
We can all make guesses but the solution is just to
On Wed, Apr 16, 2014 at 4:17 PM, R Hattersley rhatters...@gmail.com wrote:
For some reason the Python issue 21223 didn't show any activity until I
logged in to post my patch. At which point I saw that haypo had already
submitted pretty much exactly the same patch. *sigh* That was pretty much a
On 17 Apr 2014 15:09, Aron Ahmadia a...@ahmadia.net wrote:
On the one hand it would be nice to actually know whether
posix_memalign is important, before making api decisions on this basis.
FWIW: On the lightweight IBM cores that the extremely popular BlueGene
machines were based on, accessing
I don't think the names exist currently except as mnemonics in the
docstring. Patches to improve 'inspect' support would be welcome of
course.
-n
On Tue, Apr 15, 2014 at 11:30 PM, Sylvain Corlay
sylvain.cor...@gmail.com wrote:
Hi,
Unfortunately, numpy ufuncs are incompatible with the inspect
crc32 extremely fast, and I think zip might use adler32 instead which is
even faster. OTOH compression is incredibly slow, unless you're using one
of the 'just a little bit of compression' formats like blosc or lzo1. If
your npz files are compressed then this is certainly the culprit.
The zip
Hey all,
The well known memory_profiler module [1] is super-useful, but has a
fundamental limitation, which is the only way it can track allocations
is by constantly polling the OS for the size of the total process
address space. This is a crude and unreliable way of making
measurements.
In
On Tue, Apr 15, 2014 at 12:06 PM, Julian Taylor
jtaylor.deb...@googlemail.com wrote:
Good news, though! python-dev is in favor of adding calloc() to the
core allocation interfaces, which will let numpy join the party. See
python-dev thread:
On Tue, Apr 15, 2014 at 4:08 PM, Julian Taylor
jtaylor.deb...@googlemail.com wrote:
On Tue, Apr 15, 2014 at 3:07 PM, Nathaniel Smith n...@pobox.com wrote:
On Tue, Apr 15, 2014 at 12:06 PM, Julian Taylor
jtaylor.deb...@googlemail.com wrote:
Good news, though! python-dev is in favor of adding
On Mon, Apr 14, 2014 at 6:26 AM, m...@pagan.io wrote:
Greetings,
I'm working on an additional function for numpy/lib/twodim_base.py. I'm
trying to add some tests for the new function, and
numpy/lib/tests/test_twodim_base.py seems like the right place for
them.
My problem is travis-ci tells
On Fri, Apr 11, 2014 at 12:21 PM, Carl Kleffner cmkleff...@gmail.com wrote:
a discussion about OpenBLAS on the octave maintainer list:
http://article.gmane.org/gmane.comp.gnu.octave.maintainers/38746
I'm getting the impression that OpenBLAS is being both a tantalizing
opportunity and a
On Fri, Apr 11, 2014 at 6:05 PM, Sturla Molden sturla.mol...@gmail.com wrote:
Sturla Molden sturla.mol...@gmail.com wrote:
Making a totally new BLAS might seem like a crazy idea, but it might be the
best solution in the long run.
To see if this can be done, I'll try to re-implement
On Fri, Apr 11, 2014 at 7:53 PM, Julian Taylor
jtaylor.deb...@googlemail.com wrote:
On 11.04.2014 18:03, Nathaniel Smith wrote:
On Fri, Apr 11, 2014 at 12:21 PM, Carl Kleffner cmkleff...@gmail.com wrote:
a discussion about OpenBLAS on the octave maintainer list:
http://article.gmane.org
On Fri, Apr 11, 2014 at 11:25 PM, Sankarshan Mudkavi
smudk...@uwaterloo.ca wrote:
So is the consensus that we don't accept any tags at all (not even
temporarily)? Would that break too much existing code?
Well, we don't know. If anyone has any ideas on how to figure it out
then they should speak
On Fri, Apr 11, 2014 at 11:26 PM, Sturla Molden sturla.mol...@gmail.com wrote:
On 11/04/14 20:47, Nathaniel Smith wrote:
Also, while Windows is maybe in the worst shape, all platforms would
seriously benefit from the existence of a reliable speed-competitive
binary-distribution-compatible
On Sat, Apr 12, 2014 at 12:07 AM, Sturla Molden sturla.mol...@gmail.com wrote:
On 12/04/14 00:39, Nathaniel Smith wrote:
The spawn mode is fine and all, but (a) the presence of something in
3.4 helps only a minority of users, (b) spawn is not a full
replacement for fork;
It basically does
On Fri, Apr 11, 2014 at 7:29 PM, Julian Taylor
jtaylor.deb...@googlemail.com wrote:
x86 cpus are backward compatible with almost all instructions they ever
introduced, so one machine with the latest instruction set supported is
sufficient to test almost everything.
For that the runtime kernel
Okay, I started taking notes here:
https://github.com/numpy/numpy/wiki/BLAS-desiderata
Please add as appropriate...
-n
On Sat, Apr 12, 2014 at 12:19 AM, Nathaniel Smith n...@pobox.com wrote:
On Fri, Apr 11, 2014 at 7:29 PM, Julian Taylor
jtaylor.deb...@googlemail.com wrote:
x86 cpus
Hey all,
Given the sometimes rocky history of collaboration between numerical
Python and core Python, I thought it might be helpful to flag this
posting for broader distribution -- it gives one perspective on how
the core devs see things. (And is certainly consistent with my
experience around PEP
On Tue, Apr 8, 2014 at 12:51 AM, Fernando Perez fperez@gmail.com wrote:
On Mon, Apr 7, 2014 at 4:23 PM, Nathaniel Smith n...@pobox.com wrote:
Hey all,
Guido just formally accepted PEP 465:
https://mail.python.org/pipermail/python-dev/2014-April/133819.html
http://legacy.python.org
Hey all,
Guido just formally accepted PEP 465:
https://mail.python.org/pipermail/python-dev/2014-April/133819.html
http://legacy.python.org/dev/peps/pep-0465/#implementation-details
Yay.
The next step is to implement it, in CPython and in numpy. I have time
to advise on this, but not to do
On Tue, Apr 1, 2014 at 4:13 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Mon, Mar 24, 2014 at 6:33 PM, Nathaniel Smith n...@pobox.com wrote:
On Mon, Mar 24, 2014 at 11:58 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Mon, Mar 24, 2014 at 5:56 PM, Nathaniel Smith n
On Tue, Apr 1, 2014 at 3:57 PM, Sebastian Berg
sebast...@sipsolutions.net wrote:
If `a` has exactly one dimension more then `b`, the first case is used.
Otherwise (..., M, K) is used instead. To make sure you always get the
expected result, it may be best to make sure that the number of
On Tue, Apr 1, 2014 at 5:22 PM, Alexander Belopolsky ndar...@mac.com wrote:
On Tue, Apr 1, 2014 at 12:10 PM, Chris Barker chris.bar...@noaa.gov wrote:
It seems this committee of two has come to a consensus on naive -- and
you're probably right, raise an exception if there is a time zone
On Tue, Apr 1, 2014 at 6:26 PM, Matthew Brett matthew.br...@gmail.com wrote:
I'm guessing that the LOAD_WITH_ALTERED_SEARCH_PATH means that a DLL loaded
via:
hDLL = LoadLibraryEx(pathname, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
will in turn (by default) search for its dependent DLLs in
On Tue, Apr 1, 2014 at 9:02 PM, Sturla Molden sturla.mol...@gmail.com wrote:
Haslwanter Thomas thomas.haslwan...@fh-linz.at wrote:
Personally I cannot think of many applications where it would be desired
to calculate the standard deviation with ddof=0. In addition, I feel that
there should be
On Tue, Apr 1, 2014 at 9:51 PM, Ralf Gommers ralf.gomm...@gmail.com wrote:
On Tue, Apr 1, 2014 at 10:08 PM, Nathaniel Smith n...@pobox.com wrote:
On Tue, Apr 1, 2014 at 9:02 PM, Sturla Molden sturla.mol...@gmail.com
wrote:
Haslwanter Thomas thomas.haslwan...@fh-linz.at wrote
On Tue, Apr 1, 2014 at 9:50 PM, Sebastian Berg
sebast...@sipsolutions.net wrote:
On Di, 2014-04-01 at 16:25 +0100, Nathaniel Smith wrote:
On Tue, Apr 1, 2014 at 3:57 PM, Sebastian Berg
sebast...@sipsolutions.net wrote:
If `a` has exactly one dimension more then `b`, the first case is used
On Tue, Apr 1, 2014 at 11:58 PM, David Cournapeau courn...@gmail.com wrote:
On Tue, Apr 1, 2014 at 6:43 PM, Nathaniel Smith n...@pobox.com wrote:
On Tue, Apr 1, 2014 at 6:26 PM, Matthew Brett matthew.br...@gmail.com
wrote:
I'm guessing that the LOAD_WITH_ALTERED_SEARCH_PATH means that a DLL
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