Hi Dafydd, Sameer, Mel et al, I put a link here http://wiki.laptop.org/go/Scenario_taxonomy#Infrastructure_constraints pointing to Mel's page at: http://wiki.laptop.org/go/Networking_scenarios
The available networking hardware is one of several metrics which affect what activities and server software you can/should use. I suggest that we list all variables and how they interact on the taxonomy page and then move them or link to them in the deployment guide: http://wiki.laptop.org/go/Deployment_Guide/Connectivity Thanks, Greg S ------------------------------ Message: 4 Date: Sat, 12 Apr 2008 19:11:01 -0700 From: Sameer Verma <[EMAIL PROTECTED]> Subject: Re: networking scenarios To: Dafydd Harries <[EMAIL PROTECTED]> Cc: [email protected] Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed 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 belongs. The > closest thing I've found is this > page: > > http://wiki.laptop.org/go/Scenario_taxonomy > > The wiki page you refer to was my attempt (at least the first cut) at getting some kind of a scenario taxonomy going. The idea was that if we could look at different combinations of grid availability and backhaul availability, we could look at the landscape of scenarios and solutions that may work for one or more scenarios. For example, a low powered (can run off a battery) server unit will work for all situations with unreliable or non-existent grid power, but for a school that has reliable power (say, Birmingham, AL), setting up a more powerful server would be possible. The same goes for backhaul. I didn't want to start with too fine grained a scale, so I didn't specify bandwidth, latency, etc. and leave the scales at a more qualitative low/medium/high level. > Any errors are my own. > > There are four networking scenarios: > > - simple mesh > - no access point > - no school server > - we are currently aiming to support up to 15 laptops in this case > - simple WiFi > - access points > - which tend not to handle multicast very well (1Mbit/s peak) > - no school server > - this is what G1G1 laptops will tend to encounter > - typically in the developed world > - school mesh > - no access point > - school server with Jabber server > - school WiFi > - access points > - school server with Jabber server > - only one server at a time > - this is what is deployed in Peru > > Assuming that a matrix such as the one at the bottom of the wiki page covers most of what we are looking for, each scenario would lead to a set of technologies (hardware, software, network) for that scenario. We briefly talked about this at the first phone conference for the server development. > Our current priority in terms of collaboration is to improve supprt > for the fourth case, as this is the situation most of our existing > laptops are deployed in, and it's likely that upcoming deployments > will be similar. Our secondary priority is improving support for the > second case, as this is what will tend happen when laptops are taken home from school. > > Sameer -- Dr. Sameer Verma, Ph.D. Associate Professor of Information Systems San Francisco State University San Francisco CA 94132 USA http://verma.sfsu.edu/ http://opensource.sfsu.edu/ ------------------------------ Message: 5 Date: Sat, 12 Apr 2008 20:20:36 -0700 From: Jeremy Fitzhardinge <[EMAIL PROTECTED]> Subject: Re: XENified images for XO To: Dennis Gilmore <[EMAIL PROTECTED]> Cc: [email protected] Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Dennis Gilmore wrote: > On Thursday 10 April 2008, Marcus Leech wrote: > >> Has anyone done any work on building XENified images for XO? >> >> I'm interested in this for building a large-scale virtualized XO >> environment for testing purposes. >> >> The other option is to run the XO image in "HVM" mode, but that limits >> which processors >> I can use to host such a thing. >> >> Cheers >> > > The work to do this is not trivial. however, im working on moving us to a > Fedora-9 base. in doing so we should rebase the kernel. I understand > dilinger has done alot of work to make sure we will be able to use 2.6.25 We > should work with him to make sure that paravirt support in 2.6.25 is turned > on. > I'm the maintainer of the paravirt-ops Xen support, so tell me if anything needs doing to make this work. J ------------------------------ Message: 6 Date: Sun, 13 Apr 2008 10:56:10 +0200 From: "Tomeu Vizoso" <[EMAIL PROTECTED]> Subject: Re: Usability testing To: "Patrick Dubroy" <[EMAIL PROTECTED]> Cc: [EMAIL PROTECTED], [email protected], [EMAIL PROTECTED] Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1 On Sun, Apr 13, 2008 at 2:37 AM, Patrick Dubroy <[EMAIL PROTECTED]> wrote: > If there's one conclusion we can make here, it's that we could do a > better job in coordinating our usability efforts. In the next few > days, I'll try to set up a central place on the wiki that can use to > do this. Anyone else who is interested in this can feel free to do so, > of simply get in touch with me to let me know you're interested. Thank you very much, the developers have no means to organize such things, so the only way I see is the community stepping up and organizing themselves. I have heard discussions inside OLPC about the need of using usability testing in order to gather a better understanding of how the UI decisions work when a kid is finally put in front of Sugar. I think we'll see at some point OLPC resources dedicated to this task, but I don't think it's wise to wait for that to happen. In my opinion, things would work better if an OLPC employee/contractor is later integrated into an existing wider community effort for usability improvement, rather than people waiting for things to happen from OLPC. Thanks again, Tomeu ------------------------------ Message: 7 Date: Sun, 13 Apr 2008 15:57:34 +0545 From: Bryan Berry <[EMAIL PROTECTED]> Subject: question about cleaning up custom builds To: Michael Stone <[EMAIL PROTECTED]>, OLPC Developer's List <[EMAIL PROTECTED]> Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain Hey Michael, I am still trying to find a more elegant way to create a custom XO build but that eludes me. Am learning how the olpc.fth boot process works but that is going slowly. Currently I make the following changes to a build before I do save-nand rm -r /home/olpc/.sugar/default rm /security/state/var/lib/dbus/machine-id Are there any other files I need to delete before I do save-nand? thanks -- Bryan W. Berry Systems Engineer OLE Nepal, http://www.olenepal.org ------------------------------ Message: 8 Date: Sun, 13 Apr 2008 16:01:19 +0545 From: Bryan Berry <[EMAIL PROTECTED]> Subject: working version of Watch and Listen? To: OLPC Developer's List <[EMAIL PROTECTED]> Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain I get 404 not found when I try to access the url listed for Watch and Listen on the Activities page: http://staff.osuosl.org/~peter/myfiles/Watch%20&%20Listen-10.xo Can anyone tell me how stable the version of Watch and Listen is that lives in git? http://dev.laptop.org/git?p=projects/watch-listen;a=shortlog;h=master thanks -- Bryan W. Berry Systems Engineer OLE Nepal, http://www.olenepal.org ------------------------------ _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel End of Devel Digest, Vol 26, Issue 62 ************************************* _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
