Pd-list January 2013

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112 participants
225 discussions

Re: [PD] [PD-announce] Pd-extended 0.43.4 released!
by Alexandre Torres Porres 30 Jan '13

30 Jan '13

Hey, I'm having an annoying hard time with the "find" function. If I find something once, it's cool, but if I try to find the same thing again, it doesn't do that. Anyone else? sorry for not finding this issue earlier.

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Re: [PD] Pd-extended, apt.puredata.info for debian
by Hans-Christoph Steiner 30 Jan '13

30 Jan '13

For LMDE, just use 'wheezy'. I just tried and its too coplicated to support 'debian'. please try 'apt-get update' again, I should have fixed that warning too. .hc On 01/29/2013 07:01 PM, Benjamin ~ 01xy wrote: > yes, weird way LMDE call itself > > it works now with deb http://apt.puredata.info/releases wheezy main (so manual > edition of source.list), no more "W: Conflicting distribution" warning > > with deb http://apt.puredata.info/releases debian main : > W: Conflicting distribution : http://apt.puredata.info debian Release > (expected debian, but got testing sid debian) > > ++thanks > benjamin > > > deb http://apt.puredata.info/releases wheezy main > > Le 30/01/2013 00:25, Hans-Christoph Steiner a écrit : >> Hmm... I'm not sure how to handle Linux Mint Debian. Is it tracking >> Debian/testing? Looks like Mint has done something weird there. lsb_release >> -c should return 'wheezy' to make sense, IMHO. I tried something to fix this. >> >> About the "W: Conflicting distribution" warning, I think that should be fixed >> now. >> >> Please try again and let me know either way if it works or not: >> >> apt-get update >> apt-get install pd-extended >> >> .hc >> >> On 01/29/2013 05:34 PM, Benjamin ~ 01xy wrote: >>> Hello, >>> >>> I didn't manage to use the apt.puredata.info repository with a linux mint >>> debian edition os, as proposed in http://puredata.info/docs/faq/debian >>> when I try to automatically add the repository in my source.list, the >>> repository is not found when apt-get update, maybe because >>> >>> $ lsb_release -c | awk '{print $2}' >>> $ debian >>> >>> and there is no debian folder at http://apt.puredata.info/releases/dists/ >>> >>> when I try to add manually the repository in my source.list with rather : >>> deb http://apt.puredata.info/releases wheezy main >>> >>> $ sudo apt-get update >>> .... >>> W: Conflicting distribution: http://apt.puredata.info wheezy Release (expected >>> wheezy but got ) >>> $ >>> >>> my source.list : >>> deb http://mirror.tuxis.nl/packages/ debian main upstream import backport >>> deb-src http://mirror.tuxis.nl/packages/ debian main upstream import backport >>> deb http://lmde-mirror.gwendallebihan.net/latest testing main contrib non-free >>> deb http://lmde-mirror.gwendallebihan.net/latest/security testing/updates main >>> contrib non-free >>> deb http://lmde-mirror.gwendallebihan.net/latest/multimedia testing main >>> non-free >>> deb http://www.deb-multimedia.org wheezy main non-free >>> deb http://apt.puredata.info/releases wheezy main >>> >>> did I miss something ? >>> thks >>> ++Benjamin >>> >>> _______________________________________________ >>> Pd-list(a)iem.at mailing list >>> UNSUBSCRIBE and account-management -> >>> http://lists.puredata.info/listinfo/pd-list >> _______________________________________________ >> Pd-list(a)iem.at mailing list >> UNSUBSCRIBE and account-management -> >> http://lists.puredata.info/listinfo/pd-list >> >

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Start Katja's Pd from command line on rpi with full path (was) Raspberry Pi does denormals
by Julian Brooks 30 Jan '13

30 Jan '13

Excuse my ignorance: not sure how to start the below version of pd on the rpi? I have the full path but then what? if I do (in command line) pd /place/where/new/pd/is/bin/pd It signals watchdog. I also still have regular pd 0.44.0 installed btw. Sorry if this is dumb dumb dumb dumb Duuummmbbb. Jb On 24 January 2013 09:14, katja <katjavetter(a)gmail.com> wrote: > 'Undenormalized' Pd build for Raspberry Pi is temporarily parked here > for testing purposes (will be removed when Miller's release is fixed > in this sense): > > www.katjaas.nl/temp/pd-0.44-0-normalized.tar.gz > > This is a locally installed Pd, like Miller's distribution. You can > start it from command line with the full path to > pd-0.44-0-normalized/bin/pd. It's not a .deb, so it can't be installed > under supervision of package manager. > > Katja > > > On Wed, Jan 23, 2013 at 9:15 PM, Julian Brooks <jbeezez(a)gmail.com> wrote: > > Hey Katja, > > > > Would you mind sharing the 'normalised' Pd-0.44.0 for RPi please. > > > > Cheers, > > > > Julian > > > > > > > > On 23 January 2013 18:23, katja <katjavetter(a)gmail.com> wrote: > >> > >> Now I recompiled the Pd-0.44.0 release on Raspberry Pi (took me a few > >> hours, not only because Pi is so slow) with PD_BIGORSMALL enabled for > >> arm in m_pd.h. Using bigorsmalltest.pd from my previous mail I > >> verified that the macro is implemented indeed. > >> > >> Martin Brinkmann's patch chaosmonster1 > >> (http://www.martin-brinkmann.de) gives a beautiful illustration of the > >> improvement. This patch is full of filters and delay lines. At it's > >> initial settings, there is no subnormals problem. But if you set the > >> bottom slider to the right, it gets silent. With Pd-0.44-0 release, > >> CPU load explodes. With the 'normalized' Pd, nothing special happens. > >> > >> And indeed, the PD_BIGORSMALL conditional checks come for free: with > >> initial settings of the chaosmonster1, performance is equivalent in > >> both Pd's. Cool! Hopefully this is similar on armv7. > >> > >> Katja > >> > >> > >> > >> On Wed, Jan 23, 2013 at 5:01 PM, Hans-Christoph Steiner <hans(a)at.or.at> > >> wrote: > >> > > >> > hey Katya, > >> > > >> > This also sounds like good evidence for your idea of writing C code > that > >> > modern compilers optimize well. Using unions for aliasing allows the > >> > compiler > >> > to do all the new tricks, then writing loops that auto-vectorize gives > >> > us the > >> > real benefits. Also, I think we can see some gains by using memcpy() > >> > since on > >> > modern libc version, those are highly optimized for the given CPU, > >> > dynamically > >> > choosing the routines based on what instructions are available. memcpy > >> > will > >> > use things like SSSE2 if its available. > >> > > >> > .hc > >> > > >> > On 01/23/2013 07:47 AM, katja wrote: > >> >> Finally some good news on this topic. Earlier I stated that 'big or > >> >> small tests' are expensive for the Pi, but that is not by definition > >> >> the case. There must have been other conditions blurring my > >> >> impression. I've now done a systematic test where other influences > are > >> >> ruled out. A test class [lopass~] with exactly the same routine as > >> >> [lop~] was made, but compiled with PD_BIGORSMALL() macro enabled. It > >> >> was verified that [lopass~] is not affected by denormals. Performance > >> >> comparison of [lop~] and [lopass~] shows that both objects cause > >> >> equivalent CPU load. Meaning, Raspberry Pi gives the 'big or small > >> >> checks' for free! At least in the case of this simple filter. Please > >> >> try attached bigorsmalltest.zip on the Pi to see if I'm not dreaming. > >> >> > >> >> While I was at the topic anyway, I also tried a big or small test > with > >> >> union instead of direct type aliasing. It has the advantage that the > >> >> compiler can apply strict aliasing rules. This test with unions did > >> >> not cause extra CPU load either on the Pi. If you want to verify this > >> >> result, enable the call to bigorsmall() instead of PD_BIGORSMALL in > >> >> lopass~.c and recompile. > >> >> > >> >> The fact that these tests do not cause extra CPU load, indicate that > >> >> they are done in parallel with other instructions. Float and int > >> >> registers are apparently strictly separated on armv6, there's no such > >> >> thing like Intel's xmm registers or armv7's NEON. As it happens, the > >> >> big or small tests are done on ints, aliases of the floats that must > >> >> be tested. Initially I assumed that the transport of floats from vfp > >> >> to the arm integer processor would be expensive, but if the > >> >> instructions are done simultaneously it may be an advantage instead. > >> >> Another thing is that ARM implements branch predication instead of > >> >> branch prediction. Those terms look almost the same but the routines > >> >> are very different. Predication is when instructions for both > branches > >> >> are executed, and the wrong result is simply discarded later. > >> >> > >> >> Conclusions from the limited test with [lop~] and [lopass~] do not > >> >> mean that all sorts of conditional checks are cheap on the Pi, or on > >> >> ARM in general. If PD_BIGORSMALL is enabled for RPi using > compile-time > >> >> definition __arm__, it will also hold for armv7, but it may have very > >> >> different result there. At the moment I have no access yet to an > armv7 > >> >> device. Maybe someone can recompile test class [lopass~] and do the > >> >> tests on Beagleboard or Cubieboard? Otherwise I may be able to do it > >> >> on my friend's PengPod when that has arrived. > >> >> > >> >> Katja > >> >> > >> >> > >> >> On Tue, Jan 22, 2013 at 8:54 PM, Miller Puckette <msp(a)ucsd.edu> > wrote: > >> >>> thanks - I'd better try this and find out what's going on :) > >> >>> > >> >>> M > >> >>> > >> >>> On Mon, Jan 21, 2013 at 11:54:29AM +0100, katja wrote: > >> >>>> Tried the 0.44.0 build from your website. It has the same issue > with > >> >>>> subnormal values. My test patch is with [lop~]. If inf or nan is > fed > >> >>>> into [lop~], these 'values' keep circulating in the object, it can > no > >> >>>> longer process normal signal values. > >> >>>> > >> >>>> I also tried my reverb stuff with specific compiler options for > Pi's > >> >>>> processor: > >> >>>> > >> >>>> -march=armv6zk > >> >>>> -mcpu=arm1176jzf-s > >> >>>> -mtune=arm1176jzf-s > >> >>>> > >> >>>> With these options, gcc should be able to decide that RunFast mode > is > >> >>>> permitted. But even in combination with -ffast-math (which in turn > >> >>>> sets -funsafe-math-optimizations and -fno-trapping-math amongst > >> >>>> others), denormals are still there. I'm literally out of options > for > >> >>>> the moment. Sorry for not having better news. > >> >>>> > >> >>>> Katja > >> >>>> > >> >>>> > >> > >> _______________________________________________ > >> Pd-list(a)iem.at mailing list > >> UNSUBSCRIBE and account-management -> > >> http://lists.puredata.info/listinfo/pd-list > > > > >

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Pd-extended, apt.puredata.info for debian
by Benjamin ~ 01xy 30 Jan '13

30 Jan '13

Hello, I didn't manage to use the apt.puredata.info repository with a linux mint debian edition os, as proposed in http://puredata.info/docs/faq/debian when I try to automatically add the repository in my source.list, the repository is not found when apt-get update, maybe because $ lsb_release -c | awk '{print $2}' $ debian and there is no debian folder at http://apt.puredata.info/releases/dists/ when I try to add manually the repository in my source.list with rather : deb http://apt.puredata.info/releases wheezy main $ sudo apt-get update .... W: Conflicting distribution: http://apt.puredata.info wheezy Release (expected wheezy but got ) $ my source.list : deb http://mirror.tuxis.nl/packages/ debian main upstream import backport deb-src http://mirror.tuxis.nl/packages/ debian main upstream import backport deb http://lmde-mirror.gwendallebihan.net/latest testing main contrib non-free deb http://lmde-mirror.gwendallebihan.net/latest/security testing/updates main contrib non-free deb http://lmde-mirror.gwendallebihan.net/latest/multimedia testing main non-free deb http://www.deb-multimedia.org wheezy main non-free deb http://apt.puredata.info/releases wheezy main did I miss something ? thks ++Benjamin

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[rpi] X11 forwarding woes
by Charles Goyard 29 Jan '13

29 Jan '13

Hi list, just starting using pd on the rpi. It works well, but there's something strange with X11 forwarding. Doing: ssh -X 192.168.1.52 pd fails with : X Error of failed request: BadAccess (attempt to access private resource denied) Major opcode of failed request: 18 (X_ChangeProperty) Doing: ssh -Y 192.168.1.52 pd works. Doing: ssh -Y 192.168.1.52 sudo pd fails with : debug2: X11 connection uses different authentication protocol. X11 connection rejected because of wrong authentication. Application initialization failed: couldn't connect to display "localhost:10.0" So far I'm not that concerned with real-time priority, but what's my problem ? I found some clues on the internet but they were not helpful. Commands like xterm and wish and exported to my display as needed. Thanks for any idea. Charles

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Can I run scripts with [shell]?
by Alexandros Drymonitis 29 Jan '13

29 Jan '13

I checked the help patch of [shell], but if I send a cd command for example, I don't think that something really happens. I actually would like to run a script from within Pd, but what I understand is that this can't be really done, is it so? Can anyone demonstrate something like this?

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leap motion controller
by me.grimm 29 Jan '13

29 Jan '13

anyone seen this? https://leapmotion.com/ looks great for use with pd? pd + minority report m -- ____________________ m.e.grimm | m.f.a | ed.m. megrimm(a)gmail.com _________________________________

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can anyone make screencasts of 0.43 editing features?
by Hans-Christoph Steiner 29 Jan '13

29 Jan '13

I would love to see a video of the new editing features in Pd-extended 0.43, but I've never really done any screencast recording. Anyone want to take this on? It could be anything from making a complete, narrative movie, or just recording the clips and posting them so someone else can edit them into a full narrative. Here's a description of some of them: http://puredata.info/Members/hans/new-editing-features-of-pd-extended-0-43-… .hc

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remote desktop on the Pi and other questions about it
by Alexandre Torres Porres 29 Jan '13

29 Jan '13

Hello Pi people, I just got one of these to mess with, getting it to run the OS was very simple, need help with other stuff. What do you recommend for remote desktopping (controlling the Pi via a laptop, by having the laptop's keyboard/trackpad as input and getting the screen to show what's going on). I know there's something called VNC around, but it seems to come in different softwares, which one(s) have you been using. Or, better put, just about anyone works? I got a macbook air I'd like to use that way, by the way, so I need to run from a MAC OS system. To see if I got this straight, all the hardware you need to plug them together is a crossover ethernet cable, right? That way, can the Pi also feed from the internet I'm getting into my macbook air vi wi-fi while it's being remotely controlled by the same laptop via the same cable? I guess that's it for now. I hope we can have sometime soon a nice page with several info on how to run Pd in the Pi in many ways. I could help on writting this kind of tutorial Cheers

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weird error when installing pd
by Pagano, Patrick 29 Jan '13

29 Jan '13

Installing pd on linux from the website directions i get Install these packages without verification [y/N]? y (Reading database ... 166579 files and directories currently installed.) Unpacking pd-extended (from .../pd-extended_0.43.1~20120926-1~quantal1_i386.deb) ... dpkg: error processing /var/cache/apt/archives/pd-extended_0.43.1~20120926-1~quantal1_i386.deb (--unpack): trying to overwrite '/usr/bin/cyclist', which is also in package cyclist 0.1~alpha55-6 dpkg-deb: error: subprocess paste was killed by signal (Broken pipe) Errors were encountered while processing: /var/cache/apt/archives/pd-extended_0.43.1~20120926-1~quantal1_i386.deb E: Sub-process /usr/bin/dpkg returned an error code (1)

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Pd-list January 2013