Re: [Numpy-discussion] PEP 574 - zero-copy pickling with out of band data

2018-07-02 Thread Andrea Gavana
On Tue, 3 Jul 2018 at 07.35, Gael Varoquaux wrote: > On Mon, Jul 02, 2018 at 05:31:05PM -0600, Charles R Harris wrote: > > ISTR that some parallel processing applications sent pickled arrays > around to > > different processes, I don't know if that is still the case, but if so, > no copy > > migh

Re: [Numpy-discussion] PEP 574 - zero-copy pickling with out of band data

2018-07-02 Thread Gael Varoquaux
On Mon, Jul 02, 2018 at 05:31:05PM -0600, Charles R Harris wrote: > ISTR that some parallel processing applications sent pickled arrays around to > different processes, I don't know if that is still the case, but if so, no > copy > might be a big gain for them. Yes, most parallel code that's acro

Re: [Numpy-discussion] PEP 574 - zero-copy pickling with out of band data

2018-07-02 Thread Nathan Goldbaum
On Mon, Jul 2, 2018 at 7:42 PM Andrew Nelson wrote: > > > On Tue, 3 Jul 2018 at 09:31, Charles R Harris > wrote: > >> >> ISTR that some parallel processing applications sent pickled arrays >> around to different processes, I don't know if that is still the case, but >> if so, no copy might be a

Re: [Numpy-discussion] PEP 574 - zero-copy pickling with out of band data

2018-07-02 Thread Andrew Nelson
On Tue, 3 Jul 2018 at 09:31, Charles R Harris wrote: > > ISTR that some parallel processing applications sent pickled arrays around > to different processes, I don't know if that is still the case, but if so, > no copy might be a big gain for them. > That is very much correct. One example is u

Re: [Numpy-discussion] PEP 574 - zero-copy pickling with out of band data

2018-07-02 Thread Charles R Harris
On Mon, Jul 2, 2018 at 5:16 PM, Charles R Harris wrote: > > > On Mon, Jul 2, 2018 at 3:03 PM, Antoine Pitrou wrote: > >> >> Hello, >> >> Some of you might know that I've been working on a PEP in order to >> improve pickling performance of large (or huge) data. The PEP, >> numbered 574 and title

Re: [Numpy-discussion] PEP 574 - zero-copy pickling with out of band data

2018-07-02 Thread Charles R Harris
On Mon, Jul 2, 2018 at 3:03 PM, Antoine Pitrou wrote: > > Hello, > > Some of you might know that I've been working on a PEP in order to > improve pickling performance of large (or huge) data. The PEP, > numbered 574 and titled "Pickle protocol 5 with out-of-band data", > allows participating dat

[Numpy-discussion] PEP 574 - zero-copy pickling with out of band data

2018-07-02 Thread Antoine Pitrou
Hello, Some of you might know that I've been working on a PEP in order to improve pickling performance of large (or huge) data. The PEP, numbered 574 and titled "Pickle protocol 5 with out-of-band data", allows participating data types to be pickled without any memory copy. https://www.python.o

[Numpy-discussion] OpenOpt Suite v 0.5627

2018-07-02 Thread Dmitrey Kroshko
hello, OpenOpt Suite v 0.5627 (OpenOpt, FuncDesigner, SpaceFuncs, DerApproximator) is available for downloading from the link https://app.box.com/s/sikxqjmohtpklqe46ou86t44ma7b27es (unfortunately, I still cannot update it in PYPI entries because of problems with incorrect password) It fixes compat

Re: [Numpy-discussion] Polynomial evaluation inconsistencies

2018-07-02 Thread Maxwell Aifer
Ok I see what you mean. If people really want math-like symbolic representations for everything it’s probably better to use sympy or something On Mon, Jul 2, 2018 at 2:59 AM Eric Wieser wrote: > I think the `x` is just noise there, especially if it's ignored (that is, > `T[0](x*2)` doesn't do any