[PD] shmem and bigger buffer size
iftah gabbai
ift.gab at gmail.com
Mon Feb 10 12:38:23 CET 2020
so i tested it with linux and it works great, my only problem right now is
that i get an audible glitch when i setmem /dumpmem on a 5760000 samples
size buffer, i tried breaking the setting / dumping to smaller chunks but
it only got worse, is there any workaround?
thanks!
On Sat, Feb 1, 2020 at 11:44 AM cyrille henry <ch at chnry.net> wrote:
> yes, I did write that. But Miller implemented a binary transfer from pd to
> pd~ so the native solution must be lot's more efficient now. I did not test
> if shmem is still faster.
>
> Yes, using shmem_send~ and shmem_receive~ will add 1 more block latency on
> top of pd~ latency.
>
> cheers
>
>
> Le 01/02/2020 à 10:32, iftah gabbai a écrit :
> > @cyrille, i have another question if i may, i saw somewhere in the list
> that you write that streaming audio from pd to a subprocess with shmem is
> much more efficient in terms of cpu usage, is it still the case? also if i
> understand correctly from the docs i will then have latency of one block
> size + fifo right?
> >
> > On Sat 1. Feb 2020 at 10:29, iftah gabbai <ift.gab at gmail.com <mailto:
> ift.gab at gmail.com>> wrote:
> >
> > @chris, thank you for that, very good piece of info!
> >
> > On Fri 31. Jan 2020 at 20:03, cyrille henry <ch at chnry.net <mailto:
> ch at chnry.net>> wrote:
> >
> >
> >
> > Le 31/01/2020 à 18:30, iftah gabbai a écrit :
> > > so it is confirmed to work on linux? if so than great :)
> > it's working on my computer!
> > c
> >
> >
> > >
> > > On Fri 31. Jan 2020 at 13:58, cyrille henry <ch at chnry.net
> <mailto:ch at chnry.net> <mailto:ch at chnry.net <mailto:ch at chnry.net>>> wrote:
> > >
> > > I don't know why it fail on mac. You can try to split in
> smaller table, like you suggested.
> > > But you should also test it on linux first since it's
> your main target.
> > >
> > > c
> > >
> > > Le 30/01/2020 à 19:55, iftah gabbai a écrit :
> > > > im building on mac os 10.12 and intending to run on
> linux(arm), i haven’t tested on linux, the problems im having are on mac,
> > > >
> > > > thanks!
> > > >
> > > > On Thu 30. Jan 2020 at 17:47, cyrille henry <
> ch at chnry.net <mailto:ch at chnry.net> <mailto:ch at chnry.net <mailto:
> ch at chnry.net>> <mailto:ch at chnry.net <mailto:ch at chnry.net> <mailto:
> ch at chnry.net <mailto:ch at chnry.net>>>> wrote:
> > > >
> > > > what is your OS?
> > > >
> > > > Le 30/01/2020 à 17:10, iftah gabbai a écrit :
> > > > > hey C, i have 16gb of ram, and if i did not
> completely messed up my calcs i tried to allocate 2 min of 96khz
> (11.520.000)
> > > > >
> > > > > thanks again!
> > > > >
> > > > > On Thu 30. Jan 2020 at 17:06, cyrille henry <
> ch at chnry.net <mailto:ch at chnry.net> <mailto:ch at chnry.net <mailto:
> ch at chnry.net>> <mailto:ch at chnry.net <mailto:ch at chnry.net> <mailto:
> ch at chnry.net <mailto:ch at chnry.net>>> <mailto:ch at chnry.net <mailto:
> ch at chnry.net> <mailto:ch at chnry.net <mailto:ch at chnry.net>> <mailto:
> ch at chnry.net <mailto:ch at chnry.net> <mailto:ch at chnry.net <mailto:
> ch at chnry.net>>>>> wrote:
> > > > >
> > > > > hello,
> > > > >
> > > > > Do you have enough free memory on your
> computer?
> > > > > I just test on y computer, I can reproduce
> this error as soon as I ask an allocation bigger than the available memory
> on my hardware.
> > > > > (between 500 000 000 and 1 000 000 000
> points)
> > > > >
> > > > > cheers
> > > > > Cyrille
> > > > >
> > > > > Le 30/01/2020 à 12:11, iftah gabbai a
> écrit :
> > > > > > ...perhaps i should elaborate, im trying
> to dump an array in the size of 11 520 000(2 min of 96 khz audio) to
> another instance of PD, is it possible at all or do i have to break it to
> smaller chunks?
> > > > > >
> > > > > > On Thu, Jan 30, 2020 at 12:01 PM iftah
> gabbai <ift.gab at gmail.com <mailto:ift.gab at gmail.com> <mailto:
> ift.gab at gmail.com <mailto:ift.gab at gmail.com>> <mailto:ift.gab at gmail.com
> <mailto:ift.gab at gmail.com> <mailto:ift.gab at gmail.com <mailto:
> ift.gab at gmail.com>>> <mailto:ift.gab at gmail.com <mailto:ift.gab at gmail.com>
> <mailto:ift.gab at gmail.com <mailto:ift.gab at gmail.com>> <mailto:
> ift.gab at gmail.com <mailto:ift.gab at gmail.com> <mailto:ift.gab at gmail.com
> <mailto:ift.gab at gmail.com>>>> <mailto:ift.gab at gmail.com <mailto:
> ift.gab at gmail.com> <mailto:ift.gab at gmail.com <mailto:ift.gab at gmail.com>>
> <mailto:ift.gab at gmail.com <mailto:ift.gab at gmail.com> <mailto:
> ift.gab at gmail.com <mailto:ift.gab at gmail.com>>> <mailto:ift.gab at gmail.com
> <mailto:ift.gab at gmail.com> <mailto:ift.gab at gmail.com <mailto:
> ift.gab at gmail.com>> <mailto:ift.gab at gmail.com <mailto:ift.gab at gmail.com>
> <mailto:ift.gab at gmail.com <mailto:ift.gab at gmail.com>>>>>> wrote:
> > > > > >
> > > > > > hello all, ive been experimenting
> with shmem (the latest one i could find in deken), it works fine as long as
> i use very small arrays, as soon as i try to use bigger arrays ( havent
> checked where the breakpoint is but more than approx 400000) it doesnt and
> it returns "could not allocate shmem memory Id"
> > > > > >
> > > > > > i wonder if im doing something wrong
> or if its a known thing?
> > > > > >
> > > > > >
> > > > > > thanks!
> > > > > >
> > > > > >
> > > > > >
> _______________________________________________
> > > > > > Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at>> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at>>> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at>> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at>>>> mailing list
> > > > > > UNSUBSCRIBE and account-management ->
> https://lists.puredata.info/listinfo/pd-list
> > > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> _______________________________________________
> > > > > Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at>> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at>>> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at>> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at>>>> mailing list
> > > > > UNSUBSCRIBE and account-management ->
> https://lists.puredata.info/listinfo/pd-list
> > > > >
> > > > >
> > > > > _______________________________________________
> > > > > Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at>> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at> <mailto:Pd-list at lists.iem.at <mailto:
> Pd-list at lists.iem.at>>> mailing list
> > > > > UNSUBSCRIBE and account-management ->
> https://lists.puredata.info/listinfo/pd-list
> > > > >
> > > >
> > > >
> > > >
> > > > _______________________________________________
> > > > Pd-list at lists.iem.at <mailto:Pd-list at lists.iem.at>
> <mailto:Pd-list at lists.iem.at <mailto:Pd-list at lists.iem.at>> <mailto:
> Pd-list at lists.iem.at <mailto:Pd-list at lists.iem.at> <mailto:
> Pd-list at lists.iem.at <mailto:Pd-list at lists.iem.at>>> mailing list
> > > > UNSUBSCRIBE and account-management ->
> https://lists.puredata.info/listinfo/pd-list
> > > >
> > >
> > >
> > >
> > > _______________________________________________
> > > Pd-list at lists.iem.at <mailto:Pd-list at lists.iem.at> <mailto:
> Pd-list at lists.iem.at <mailto:Pd-list at lists.iem.at>> mailing list
> > > UNSUBSCRIBE and account-management ->
> https://lists.puredata.info/listinfo/pd-list
> > >
> >
> >
> > _______________________________________________
> > Pd-list at lists.iem.at mailing list
> > UNSUBSCRIBE and account-management ->
> https://lists.puredata.info/listinfo/pd-list
> >
>
>
>
> _______________________________________________
> Pd-list at lists.iem.at mailing list
> UNSUBSCRIBE and account-management ->
> https://lists.puredata.info/listinfo/pd-list
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20200210/db035217/attachment-0001.html>
More information about the Pd-list
mailing list