Cerebro v3.0: File sharing and buddy management made easy!

are here: http://cerebro.mit.edu/index.php/Documentation#Example_GUI If you are a developer, there is detailed tutorial to do file sharing from Python prompt (!) here: http://cerebro.mit.edu/index.php/Documentation#Buddy_management Enjoy Pol -- Polychronis Ypodimatopoulos Graduate student Viral

Cerebro v3.0: File sharing and buddy management made easy!

are here: http://cerebro.mit.edu/index.php/Documentation#Example_GUI If you are a developer, there is detailed tutorial to do file sharing from Python prompt (!) here: http://cerebro.mit.edu/index.php/Documentation#Buddy_management Enjoy Pol -- Polychronis Ypodimatopoulos Graduate student Viral

VGA-output on your XO?

http://arstechnica.com/journals/hardware.ars/2008/12/09/acer-releases-b223-displaylink-lcd-in-europe p. -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel

Re: wiki.laptop.org upgrade

Without meaning to undervalue the significance of this thread, it does not seem to pertain anymore to the subject of the devel list whose description is Software development mailing list (http://lists.laptop.org/listinfo/) :-) I refer to devel's description for the sake of completeness, not

cerebro's memory usage

not wake up the system in that case. In the mean time, 760 is not using the latest version of cerebro. Is there going to be a newer stable? p. -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod

Re: [sugar] G1G1v2 Activities

m0QAmwQLe6qLvzYJBNnndfI1Wz6B8tUn =qdS2 -END PGP SIGNATURE- ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http

cerebro documentation

. Chapter 6 evaluates Cerebro's performance by providing experimental results on a testbed with tens of nodes. With scalable regards, Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod

analyzing memory usage of python code

Polychronis Ypodimatopoulos wrote: I filed #8128 to address the memory usage that seems excessive. I have also disabled cerebro from start-up while this is being investigated and the issue with blocking shutdown process (#8108). Should be picked up at the next version of joyride. Any

Re: Cerebro (was Re: Almost 50% less free memory in joyride-2302 compared with Update.1 (708))

(5.9MB total) (WHY?!?!?) Nothing specific to cerebro up to this point. Running Cerebro fully-blown as root: Additional cost: 1.3MB of memory (7.2MB total) It doesn't seem to me that there's much I can do, except for writing some parts of Cerebro in C. Pol -- Polychronis Ypodimatopoulos

Re: Cerebro (was Re: Almost 50% less free memory in joyride-2302 compared with Update.1 (708))

Marco Pesenti Gritti wrote: 6.5 Mib according to ps_mem You are right, it's enabled in joyride... it's failing for me because it can't find msh0 (not sure why). Marco I filed #8128 to address the memory usage that seems excessive. I have also disabled cerebro from start-up while this

where is msh0 ?

Joyride: 2331 firmware: Q2E14 machine: B4 I don't see mshX in my interfaces. Is this a known issue? Didn't find anything similar in the archives, sorry if I 'm repeating it. Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http

joyride version announcements

Why are new versions of Joyride not announced? Pol ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel

Re: Collaboration Requirements

connection is dependable) wrt our collaboration technology. Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel@lists.laptop.org http

Re: Remarks on the Work of Sugar

subsystems?) or if you'd like to see more detailed exploration of any of the items noted above. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT

permission to add activity to joyride

that pencil!) Screenshots from a GTK-based (to be sugarized) version are here: http://lyme.media.mit.edu/cerebro/index.php/Screenshots#GTK-based_UI thanks, Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod

koji vs. dropbox

This is probably meant for the release team. Is the dropbox mechanism for updating rpms in joyride still working? According to http://wiki.laptop.org/go/Build_system the dropbox should work but newer RPMs of cerebro don't get pulled into joyride. Rumors have it that this mechanism no longer

Re: koji vs. dropbox

Hi Dennis, Dennis Gilmore wrote: On Monday 07 July 2008, Polychronis Ypodimatopoulos wrote: This is probably meant for the release team. Is the dropbox mechanism for updating rpms in joyride still working? According to http://wiki.laptop.org/go/Build_system the dropbox should work

Re: Setting up the mesh device

(although different channels do have a radio scaling advantage). p. -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel@lists.laptop.org http

wiki spam!

. -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel

thread summary: On Cerebro, Telepathy, yokes and whites

-- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel

On Cerebro, Telepathy, yokes and whites (was Re: cerebro in sugar)

in joyride. Am I wrong? Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel

Re: On Cerebro, Telepathy, yokes and whites (was Re: cerebro in sugar)

Benjamin M. Schwartz wrote: Polychronis Ypodimatopoulos wrote: | 2) Make provision in both sugar and activities so that there is a clear | abstraction from telepathy so that _if_ a better collaboration stack | comes along, telepathy won't be hardcoded in sugar. This mainly | involves

Re: [OLPC Networking] TCP is broken in mesh mode

- ___ Networking mailing list [EMAIL PROTECTED] http://lists.laptop.org/listinfo/networking -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel

Re: New, more realistic multi-hop network testbed

on this as he probably needs to take the lead. As a first step, I will order 10 laptops for Poly to find permanent homes for throughout the MIT campus. thank you. Kim p. -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http

Re: journal object transfer for 8.2

___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT

Re: New, more realistic multi-hop network testbed

Quoting Michail Bletsas [EMAIL PROTECTED]: [EMAIL PROTECTED] wrote on 06/08/2008 12:00:30 PM: one more (which may be considered a varient of d) i) 802.11s meshing in bad RF environments this is where there are a small number of XO machines (so you don't have the 802.11s traffic issues),

Re: New, more realistic multi-hop network testbed

Quoting C. Scott Ananian [EMAIL PROTECTED]: While we're talking about networking: From discussions with the OLSRd guys, one way they made their protocols work well in dense networks was to aggressively use *all* the 802.11*a* as well as g channels. 802.11a has 24+ non-overlapping channels

Re: New, more realistic multi-hop network testbed

speaking for myself when I say that OLPC has a hard time trusting developers unless they're on its payroll, especially for core parts of its software (with the exception of Marco? ;-). I think commitment, communication and roadmaps is the answer to this problem. p. -- Polychronis Ypodimatopoulos

New, more realistic multi-hop network testbed

the network. 3) last but not least, get about 10-12 XOs from OLPC ;-) Comments/additions are most welcome! Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel

Re: New, more realistic multi-hop network testbed

Aaron Kaplan wrote: On Jun 6, 2008, at 10:31 PM, Polychronis Ypodimatopoulos wrote: In the spirit of escalating collaboration/communication use cases to more realistic scenarios, I 'd like to propose creating the following multihop network testbed. This testbed will involve about 70 nodes

Re: New, more realistic multi-hop network testbed

Hi Wad, John Watlington wrote: Poly, In theory, your suggestion sounds good. In practice, I think it is advanced research winning out over fixing real problems. Heh as you know, research is usually done based on simulations, not by deploying such cumbersome, large area networks ;-)

Volunteers/help for sugar/cerebro integration

/git?p=users/mstone/telepathy-cerebro;a=tree;hb=HEAD [3] /usr/lib/python2.5/site-packages/sugar/presence/presenceservice.py Thanks, Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod

Re: [sugar] 65-node simple mesh test (and counting... ;-)

John Watlington wrote: One interesting note is that the suggested routing algorithm for 802.11s is a combination of reactive and proactive routing (unlike our current one, which is solely reactive). Perhaps that provides the adaptation necessary for the mesh to work ? If you refer to

Re: 65-node simple mesh test (and counting... ;-)

Hi Bill, Bill Mccormick wrote: The network manager could be the culprit here, although I thought you had it disabled, how did you disable it? chkconfig --del NetworkManager you'll need to pass the '--add' argument to restore it in rc5. When it's running it looks like it first looks on

65-node simple mesh test (and counting... ;-)

of CPU usage in 'top'). Comments/suggestions? Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org

Re: [sugar] 65-node simple mesh test (and counting... ;-)

to the raw data. The raw capture is here: http://lyme.media.mit.edu/cerebro/capture-1 Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel

Re: [sugar] 65-node simple mesh test (and counting... ;-)

Bill Mccormick wrote: Hey Pol, what format is the data in, is this pcap? yes, it's libpcap. Saved from wireshark. I just tested the file and successfully loaded in wireshark ;-) Pol The raw capture is here: http://lyme.media.mit.edu/cerebro/capture-1

RE: [sugar] 65-node simple mesh test (and counting... ;-)

to make Cerebro more activity-friendly and examine alternative use cases. Thanks for the feedback, Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel

Re: [sugar] 65-node simple mesh test (and counting... ;-)

was heavily working on many of its protocols, but I think they 've reached a stable point now (I found no reason to change anything for more than a month now). This is definitely on the wish-list right now! Help is greatly appreciated. Pol -- Polychronis Ypodimatopoulos Graduate student Viral

Re: [sugar] 65-node simple mesh test (and counting... ;-)

://lyme.media.mit.edu/cerebro/index.php/Experimental_results), especially in dense wireless networks. Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel

Re: 65-node simple mesh test (and counting... ;-)

that, on average, some 95% of the data transmitted over broadcast are successfully received on all nodes. We are throwing this away by discarding it on our wireless interfaces. Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http

Re: 65-node simple mesh test (and counting... ;-)

Quoting Robert Withrow [EMAIL PROTECTED]: As you may know, but for the others also: Nortel is working to set up a 100 node test network of this nature (each node wired through switches with some test director automation) in a RF clean environment in a Lab in Ottawa and Marcus is one of the

Mesh testing

to fix the problem. Is anyone still maintaining the NetworkManager? It seems to me that the NetworkManager chooses to restart msh0 sometimes. Is this true? Does it go so far as to reload the firmware? Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1

Re: [sugar] Ad-hoc Networking

for a moment: the kernel has 286 bug reports and journal has 232. Do you suggest abandoning the kernel and substitute with something else (say windows [just a random thought ;-)]). What about Journal? /cynicism Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab

Re: Document sharing issues

Guillaume Desmottes wrote: Le lundi 21 avril 2008 à 10:24 -0500, James Simmons a écrit : 2). Downloading a document is very slow. I distribute View Slides files on an Apache server, using the Browse activity to copy same to the Journal. This takes under a minute even for a large file

Re: Walter leaving and shift to XP.

-- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel

Cerebro released

an efficient multicast mechanism - simple collaboration mechanism through 'share', 'join', 'leave' functions - simple programming API based on dbus (see examples) http://wiki.laptop.org/go/Cerebro Enjoy! Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1

Re: Do we ever want to bind more than 8 multicast MAC addresses?

of addresses? Remember, this driver handles lots of devices, some with non-mesh firmware. -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel

Re: Do we ever want to bind more than 8 multicast MAC addresses?

what's possible? why not? David Woodhouse wrote: On Fri, 2008-04-18 at 11:43 -0400, Polychronis Ypodimatopoulos wrote: Is it possible to associate shared activities with ethernet ports instead of whole multicast addresses? Then we would only need one single multicast address and do

Re: Do we ever want to bind more than 8 multicast MAC addresses?

David Woodhouse wrote: On Fri, 2008-04-18 at 11:50 -0400, Polychronis Ypodimatopoulos wrote: what's possible? why not? David Woodhouse wrote: On Fri, 2008-04-18 at 11:43 -0400, Polychronis Ypodimatopoulos wrote: Is it possible to associate shared activities

Re: Do we ever want to bind more than 8 multicast MAC addresses?

David Woodhouse wrote: On Fri, 2008-04-18 at 12:01 -0400, Polychronis Ypodimatopoulos wrote: You're not following: Ethernet ports are bytes 12-14 (2 bytes total) on _all_ ethernet frames. IP has nothing to do with this. Instead of looking at the first 6 bytes (destination mac

Re: Devel Digest, Vol 26, Issue 65

of the xephyr-based emulator like this: http://wiki.laptop.org/go/Sugar_with_sugar-jhbuild#Running_multiple_instances Hope it helps, Tomeu ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel -- Polychronis

Re: networking scenarios

Dafydd Harries wrote: This is something which was not completely clear to me until I talked to Wad about it the other day, and I think other people might find it useful. It should probably go on the wiki (assuming it isn't already there somewhere). I'd like some feedback about where it

Re: Chilling Effects paper at USENIX

Having received a lot of publicity, the OLPC project is a great candidate for criticism, sometimes constructive, other times done in the absence of other serious academic research. Potentially weak security models in windows is no news, but in OLPC... Now this is worth taking a shot at!

Re: Build Debate: Followup on Build Naming

___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel

Re: DBus - Sessionbus rights

John (J5) Palmieri wrote: Luckily all mail with DBus in the header gets filtered into a single folder ;) Yes spoofing is the answer here (it is sort of like asking why can't users create applications that run from /usr/bin though not quite exact). If we allowed users to grab names on the

Re: DBus - Sessionbus rights

John (J5) Palmieri wrote: I can't think of a reason to want a system process invoking methods on a user process. Well, in my case, the system process is the only one having access to the network and provides network connections and events to all user processes. Sending signals to user

DBus - Sessionbus rights

the default user (olpc) by default from advertising processes under a well known name? What's wrong with user processes making their presence known on SystemBus? -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod

Re: [OLPC Networking] RSSI value questions

[EMAIL PROTECTED] http://lists.laptop.org/listinfo/networking -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel@lists.laptop.org http

Re: OLPC security project

PROTECTED] ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod

Re: Call for Papers/Talks/Ideas! Update.2 Mini-Conference

performance goals are worthy candidates for a talk! --scott -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel@lists.laptop.org http

Cerebro performance

cerebro now offers (in command-line!) - chat (just type text in the console) - file transfer (type in console: /sendfile) - view of network tree layout - information about all other nodes in the network (nickname, colors, keys, etc) Performance (remember that this is a mesh test, no servers

RPM package for cerebro test

http://lyme.media.mit.edu/cerebro/images/Cerebro-24-1.olpc2.noarch.rpm ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel

status of project hosting?

What is the status of pending project hosting requests? ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel

Re: Salut and Suspend/Resume issues

been away for quite some time you have no idea who is still around. Sjoerd -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel

Re: Salut and Suspend/Resume issues

Gianni, Giannis Galanis wrote: In fact the although the requests are every 10min, the icon will hold for 30min in total until it is deleted. Bug 5501, however, will delete the entry if within the timeframe, a new host arrives. Are you saying that you can have stale icons on screen for as

hosting request: Cerebro

. There is no need to list non-committer developers. Username Full nameSSH2 key URL E-mail - -- #1 ypod Polychronis Ypodimatopoulos http://wiki.laptop.org/go

Re: Salut/avahi/meshview issues

Like Michail and Ricardo said, going from a paper publication to an actual implementation and also _testing_ of that implementation is a very long way. The following factors need to be taken into account when comparing various approaches to routing and presence in MANETs: 1) scalability: I

Re: Testing the Wireless driver changes

it when it's appropriate. Then the decision as to whether the radio is blocked can properly be handled in userspace, and the device can be left quiescent if appropriate. -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu

Cerebro: Scalable presence information

the rest are simply put in the list on the right. A sugarized version of the UI will follow soon! Enjoy! Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod

Re: is there space for Space for a joyride?

about 100kb. Pol Bernardo Innocenti wrote: Polychronis Ypodimatopoulos wrote: If there is still interest in the Space activity (layout of tree of neighbors according to distance) entering Joyride, do you need an .xo file or an .rpm? How big is the bundle

is there space for Space for a joyride?

If there is still interest in the Space activity (layout of tree of neighbors according to distance) entering Joyride, do you need an .xo file or an .rpm? Pol ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel

Re: Massive mesh view?

Representation of massive numbers of XOs in the network is definitely an interesting problem. It may be a little early to jump into providing solutions, but I dealt with the problem recently while working on my space activity, and space itself can be a scarce resource on screen, especially if

Re: slightly long and detailed proposal for documentation-translation workflow

heh, I totally agree, but this doesn't mean that there isn't a market for a book like that (unfortunately!). Apart from the fact that some people feel disabled without a book, there still is *not* a user-friendly introduction on how to use the laptop (let alone how it works) and I doubt that

[Fwd: [msgs] Teach anything you want!]

Not sure if this is relevant, but maybe someone would like to showcase the XO there? I may have an hour or two to spare on that weekend, but no more than that. Please forward freely and let me know. Pol Original Message Subject:[msgs] Teach anything you want! Date:

Re: Wireless porting

Hi, What platform do you plan to port the driver to? Pol Alex Gibson wrote: To Jim , Walter, Ivan and others We (UTS) sent a proposal on doing the wireless driver porting to you a fortnight ago and we are still yet to here from you. Can you please confirm that you received it or not.

Re: [OLPC Networking] Wireless porting

. On Oct 13, 2007, at 1:12 AM, Polychronis Ypodimatopoulos wrote: Hi, What platform do you plan to port the driver to? Pol Alex Gibson wrote: To Jim , Walter, Ivan and others We (UTS) sent a proposal on doing the wireless driver porting to you a fortnight ago and we are still yet to here

Alternative neighborhood in mesh networks

Announcing Space, an activity that displays an alternative mesh network neighborhood that offers a sense of space by placing you in the center and everyone else in the mesh network at a distance proportional to link quality between you and the node that is being displayed.

Re: Alternative neighborhood in mesh networks

Hi Cris, No it does not rely on any subsystems of the firmware or sugar (other than getting the XO's color settings). :-) Pol Chris Ball wrote: Polychronis, Announcing Space, an activity that displays an alternative mesh network neighborhood that offers a sense of space by placing

mesh driver in ubuntu

I have Ubuntu 7.04 with 2.6.20-16 and want to use the 8388 USB module with my system. I guess I either need to jump to 2.6.22, or compile the driver for 2.6.20. I would prefer the second as the upstream version of the driver does not come with all the features I need. So, do I just get the driver

BIOS prompt at q2c25 + B2?

How do I enter the BIOS prompt on q2c25? It seems I can no longer use ESC tryied other buttons too ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel