[PD] [PD-announce] jit_expr 0.1: Just in time compiled expr/expr~/fexpr~

[Alex]

Hi Marco,

HMM, where did you install jit_expr.pd_darwin ? Deken initially sets up a
directory for you if you tell it to, I believe. I think on mac this is in
~/Documents/Pd/extra ?
Can you tell me what is in your "path" settings, on mac the "file" menu
item might be just called "Pd"? I'm not sure [I'm on a linux machine right
now]
File -> preferences -> path

-Alex


On Sun, Mar 18, 2018 at 10:10 AM, Marco Matteo Markidis <
mm.markidis at gmail.com> wrote:

> Sorry,
> I forgot to let you know all the important informations.
>
> Pd vanilla 48.1 64 bit, OSX, downloaded from deken binaries and sources.
> help file doesn't work opening from pd browser and directly double-clicking.
>
> I tried even copy pd.lib in the same folder of help & pd.darwin, but
> without success.
>
> 2018-03-18 18:04 GMT+01:00 Alex <x37v.alex at gmail.com>:
>
>> Hi Marco,
>>
>> Which version of PD are you running? Which OS? I expect you downloaded
>> jit_expr from deken?
>> Does the jit_expr help file work if you open it in the pd browser? help
>> -> browse -> jit_expr -> double click on the jit_expr-help.pd file?
>>
>> -Alex
>>
>>
>> On Sun, Mar 18, 2018 at 9:49 AM, Marco Matteo Markidis <
>> mm.markidis at gmail.com> wrote:
>>
>>> Dear Alex,
>>>
>>> very happy about this new feature... and incredibly very happy about
>>> hearing just-in-time compiling dsp graph!
>>> Anyway, I get only various jit/expr, jit/expr~, jit/fexpr~ couldn't
>>> create...
>>> I tried to change the [declare -lib] in [declare -path], jit_expr in
>>> jit/expr in declare, looking to have the right 64 bit pd but nothing...
>>>
>>> Best,
>>> Marco
>>>
>>> 2018-03-18 17:34 GMT+01:00 Alex <x37v.alex at gmail.com>:
>>>
>>>> Alexandre,
>>>>
>>>> I don't think it has had enough usage to be called "stable" yet, but I
>>>> could see that happening down the line. In fact, I could see eventually JIT
>>>> compiling the entire DSP graph.. but of course that would be significant
>>>> work. At this point I just need more people to try it out and make sure it
>>>> would be up to it.
>>>>
>>>> -Alex
>>>>
>>>>
>>>> On Sun, Mar 18, 2018 at 9:23 AM, Alexandre Torres Porres <
>>>> porres at gmail.com> wrote:
>>>>
>>>>> if this is stable, wouldn't it be a nice idea to propose it as an
>>>>> update to the expr~ family of objects? since it is basically an optimized
>>>>> clone?
>>>>>
>>>>> cheers
>>>>>
>>>>> 2018-03-18 13:08 GMT-03:00 Alex <x37v.alex at gmail.com>:
>>>>>
>>>>>> jit_expr is a clone of the pure data expr/expr~/fexpr~ objects. It
>>>>>> just-in-time compiles its expressions so they should be much more optimized
>>>>>> than the original. If all works as designed, they should use less CPU than
>>>>>> the equivalent vanilla, non-expr, patching and have a significant CPU
>>>>>> advantage over the original expr objects.
>>>>>>
>>>>>> I've put the external, compiled for 64-bit Mac-OS and 64-bit Linux,
>>>>>> up on deken: in pd, go to help menu, find externals, search for "jit_expr".
>>>>>>
>>>>>> After installing the external you should be able to change any of
>>>>>> your expr family of objects to just in time compile by loading the library,
>>>>>> [declare -lib jit_expr], and then prefixing the object name with "jit/",
>>>>>> for example [jit/fexpr~ $x1[0] + $y1[-1]].
>>>>>>
>>>>>> I believe they are feature complete with the originals but I'd love
>>>>>> to know if there is anything that I'm missing or any bugs that you discover.
>>>>>> I'm not exactly sure how to profile pure data patches. If anyone has
>>>>>> a good approach or original expr~/fexpr~ patches that use a lot of CPU you
>>>>>> can share, let me know.
>>>>>>
>>>>>> Compiling in the object takes a little bit of time, so the initial
>>>>>> instantiation of the object/expression will be a bit slower than the
>>>>>> original, FYI.
>>>>>>
>>>>>> Please report any issues here:
>>>>>> https://github.com/x37v/jit-expr/issues
>>>>>>
>>>>>>
>>>>>> BTW, if you're curious to see the llvm assembly produced by your
>>>>>> expression, send the |print( message into the left most inlet of your
>>>>>> object then check out the pd console.
>>>>>>
>>>>>>
>>>>>> I would love help building Windows and 32-bit Linux versions of the
>>>>>> externals. I'm guessing we could also do raspi/arm builds but we'd need
>>>>>> some changes to the source code as it uses llvm and explicitly generates
>>>>>> code for x86 right now.
>>>>>>
>>>>>> The source code can be found in the git repo:
>>>>>> https://github.com/x37v/jit-expr
>>>>>>
>>>>>> -Alex Norman
>>>>>>
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