Re: 15 computer science collegians looking for a project
On Wed, Apr 30, 2008 at 10:18:24AM +0200, NoiseEHC wrote: http://homepages.cwi.nl/~manegold/Calibrator/ Could you run on your machine and share the results? Currently I do not have access to an XO. Probably not the results you were looking for: bash-3.2$ echo `cat /ofw/ec-name` PQ2D13 bash-3.2$ echo `cat /ofw/model` C2 bash-3.2$ echo `cat /boot/olpc_build` joyride 1897 bash-3.2$ uname -r 2.6.22-20080408.1.olpc.de2a86ff3b60edc bash-3.2$ gcc --version gcc (GCC) 4.1.2 20070925 (Red Hat 4.1.2-27) Copyright (C) 2006 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. bash-3.2$ gcc calibrator.c -o calibrator -lm calibrator.c:132: warning: conflicting types for built-in function Ãoundà bash-3.2$ ./calibrator 431 2M calibrator_OLPC_C2 Calibrator v0.9e (by [EMAIL PROTECTED], http://www.cwi.nl/~manegold/) b7b50008 -1212874744 4096 -4088 b7b50fff -1212870657 4096-1 b7b51000 -1212870656 4096 0 MINTIME = 1 analyzing cache throughput... range stride spots brutto- netto-time 2621440 4 655360 125443136 analyzing cache latency... range stride spots brutto- netto-time 2621440 4 655360 195740 97870 analyzing TLB latency... range stride spots brutto- netto-time 324403210563072Segmentation fault bash-3.2$ Martin pgpHEJMyZTozr.pgp Description: PGP signature ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Datastore and Core Data
On Wed, Apr 30, 2008 at 7:03 AM, Benjamin M. Schwartz [EMAIL PROTECTED] wrote: I suggest that people interested in datastore design should become familiar with Apple's Core Data (http://en.wikipedia.org/wiki/Core_Data). Core Data is a strongly typed high-level data persistence framework provided as an operating system service. Notably, it is in userspace, and has a variety of backends (including extensible storage backends for authors whose data is most efficiently stored in a particular way). It seems to me that a layer like Core Data is distinctly missing from current Linux-based GUI systems, and is precisely the sort of layer on top of which the datastore would sit most comfortably. I'm a bit confused about how you see something like Core Data helping us with the Datastore. Can you elaborate a bit on this? Thanks, Tomeu ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Signed build for Italy
Hi, A side note: they also badly want to rename Pippy because apparently it's an obscenity in Turkish :-) We're already localizing it to a different name in some other cases -- Peppy in Spanish locales, and Python in Mexico's build. Since Sugar uses gettext for the activity name, we can translate it to whatever they'd like. - Chris. -- Chris Ball [EMAIL PROTECTED] ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Journal Suggestions
To be truthful I would be perfectly happy if the SD card just had metadata, including screenshots, like regular journal entries have. The other Journal features aren't necessary. If there was a way of doing a Move from the Journal to the SD card that would be helpful. Finally, since both are constrained in space, it would be desireable to prevent copies and moves if the target did not have enough free disk space. This is my biggest frustration with the XO. If I'm reasonably careful it has more than enough disk space for my needs. The problem is that it makes it difficult to be careful. I have had an experience where it copied a Journal entry to the SD card and ran out of disk space before the copy completed, and there was no indication of this at all, other than the fact that my Activity didn't work. I had to open the Terminal to find out what went wrong. James Simmons Eben Eliason wrote: | In other words, the Journal and the interactions with it are so tied | to the system already, that one would still have to manually copy | pretty much anything one wants onto the SD card or external device | anyway. The only difference would be in whether or not the copied | files get indexed, with metadata, similar to the way the Journal | entries do; it can never serve as a replacement for the Journal, or | as an extension of it, which seems to remove most of the benefits | that it could otherwise offer. Perhaps you could instead register | an SD card *as* the Journal, so that in the future the Journal | activity ignores NAND and instead operates only on the registered | device instead. This doesn't really extend the memory...it simply | swaps it out (for something with, presumably, much more), which is | still not that great. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Journal Suggestions
On Wed, Apr 30, 2008 at 10:15 AM, James Simmons [EMAIL PROTECTED] wrote: To be truthful I would be perfectly happy if the SD card just had metadata, including screenshots, like regular journal entries have. The other Journal Quoting Jameson: Technically, I think this would mean that the metadata are stored on the NAND, with some UID of the associated file. The file, if not present on the NAND, would be looked for on SD, USB, and then server, in that order. And quoting myself from the other thread on the Journal designs: Well, this has been a point of debate. Some feel that absolutely nothing should change on removable media unless the user specifically copies to it or modifies files on it. It's very questionable if reading a pdf on my USB drive should amount to modifying the pdf on my USB drive. I'm actually leaning towards no on this point, to retain the idea that the Journal itself is the thing which retains history. Files which aren't in it are thus not versioned. That seems like a clear distinction to me, and one that can be learned. The addendum to this idea, which stems from the new Journal designs, is that the Journal can record actions on objects that don't actually reside in the Journal, which in some sense gets around the issue. For instance, it could say You read all_about_sharks.pdf on your_USB_drive today. The Journal entry records the action, and the metadata (such as the page you stoppped on), but keeps only a reference to the file on the USB drive, instead of manually copying it. You could resume this entry only when the USB drive was present, of course. This opens the dangerous door of aliases, which is why we've been operating under a copy-almost-everything model, so that it's always possible to resume old entries. We may find a good way to handle this type of approach. It's still not inherently correct. For instance, even if we store the metadata on NAND and reference another object on an external device, there's a question of whether or not we redundantly store that metadata on the device itself. Without it, we keep the USB drive (for instance) clean, as many have claimed we must do. On the other hand, without it we can't ever truly restore from that device, which is a firm requirement of the backup server. So there may still need to be differences...perhaps instead we always keep the local metadata, but we have the option to treat external devices of any kind as Normal or Backup devices. Assume the above for a moment. As I mentioned before, saves will always save into the Journal (by default, at least). If we open a pdf from the Backup SD, we'll get an entry in the Journal for that. Do we also get an entry on the SD? Are there mirror entries? Conversely, do actions I take on objects in local NAND get mirrored in the Backup SD? If we want to treat them as local backup, then yes. But perhaps this is again not the use case you had in mind, in which you wanted metadata actually *on* the device. For that matter, what reasons might you have for needing the metadata on the device itself other for backup, assuming you can actually manage all of the history within the Journal, and reference the files which live on the external drive? The other problem is how and when to handle aliases, and how to expose that to kids. For instance, we've been operating to the extent possible under the assumption that we'll copy any files used or viewed into NAND so we can retain the history locally, and so kids don't have to always think about when to copy or not, and can always go back into the Journal and resume an entry. Maybe this is the wrong approach. If we don't automatically copy for them, how do we expose that, make them aware of it, and offer a simple way for them to do it? Perhaps an entry with an alias has a special button which pulls the aliased content in upon request, automatically. - Eben PS. Please submit tickets for the feedback issues you see. We need to close up holes like that and make sure the laptop keeps the kids properly informed about such things. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: 15 computer science collegians looking for a project
On 30/04/08 10:18 +0200, NoiseEHC wrote: On 29/04/08 17:41 +0200, NoiseEHC wrote: On this page http://wiki.laptop.org/go/Geode_LX I have named some instructions as Synchronized ops (in the MMX section). Are those real or did I mismeasured something? That section is very difficult to understand. I'm not sure which operations you have invented this name for. As you probably have already noticed I am not a native English speaker (and neither learned advanced English in school, just picked it up). What I wanted to write in that section, every MMX op, whose source/destination operand is an integer register (and not a MOV), will consume absolutely different clock cycles than 2 (2 is listed for almost every MMX op in the databook, at least in my version). Is it real? I still don't understand what you mean, but the clock timings that are in the data sheet, are the same ones on my documentation. You would have to find somebody more skilled then I to debate if they are correct or not. If those are real then would somebody from AMD just go through the databook and fix the instruction clock cycle numbers? Because in that case it is sure that they do not match reality and clearly I have better things to do than measuring clock cycles. Clearly you must have some basis for assuming that the numbers are wrong, so you must have done some measurement. I consulted the secret documentation that you claim I am withholding from you, and the timings there are the same as in the datasheet. I believe that you are correct in that these are the clock counts for the instruction to go through the FPU and don't include the stall time for the pipeline to clear up. There is a Test results section in that page. The first two test were conducted via email. I have emailed to this list test programs and there were people who run them and emailed back the result. Especially the first test has some stupid bugs because I wrote them essentially blind. The third one is the result of my session logged into a physical machine. It can be that only this stall time is missing from the databook but the fact is that I as a programmer am not interested in how many clock cycles does the FPU take to execute some internal operation (which seems the databook to list) but I would like to know the real time consumed. I think you'll probably have to measure that. I can't find any further documentation as to what the penalty is for scheduling two FPU instructions back-to-back. I am not a silicon designer, so I'm not the final word on if they are correct or not, but at least that should prove that there isn't a massive marketing conspiracy to hide the details of the processor from our customers. If they are lying to you, they are lying to me, and they're not lying to me. This conspiracy thing was not serious, I have used a smiley at the end. However from my perspective there is no difference if there is some conspiracy or if there is not. In fact what I think is either that I am mistaken and made some errors measuring this or the technical writer made mistakes years ago and nobody cared to fix it. You need to be careful when tossing about opinions, especially if you do not mean it. My collegues and I have spent a lot of effort to ensure that the documentation and software for this processor is open and freely available. I would wager it would be rather difficult to find another x86 processor on the market today with such complete documentation and software to accompany it (BIOS and operating system). I take allegations that we're hiding something very seriously. I don't have any information about L2 cache miss penalties, but they are easy to calculate. Please see: http://homepages.cwi.nl/~manegold/Calibrator/ Could you run on your machine and share the results? Currently I do not have access to an XO. I don't have a machine currently handy to do that test, but I'll try to get to it when I do. I will talk to somebody about documenting the FP unit pipeline. It does handle 1 instruction per clock from the integer unit. In practice we know that two floating point instructions back to back will stall the IU. I can also tell you that it is optimized for single precision, so double precision is handled by microcode and needs to go through the path again. Thanks! I would also like to know how many ALU units does the FPU have? I mean FMUL costs 1, PFMUL costs 2. Is it because it only has 1 multiply unit and it executes PFMUL serially? If that is the case, does that mean that the 3DNOW support is only compatibility and will not be faster than simple FP? I believe that is a reasonable assertion to make if you have instructions that perform similar behavior. There are some 3DNow! operations that cannot be performed with a single FP operation, and those will still win. Jordan -- Jordan Crouse Systems Software Development
Re: 15 computer science collegians looking for a project
Ar 29/04/2008 am 14:56, ysgrifennodd Eben Eliason: I could very well be way off target with this suggestion, but an implementation of Groups (background reading, though not quite up to date: http://wiki.laptop.org/go/OLPC_Human_Interface_Guidelines/The_Laptop_Experience/Zoom_Metaphor#Groups) seems like a perfect place for some additional help. It's a feature that's very much wanted, as far as I can tell, and its very closely tied to the network space which you hope to focus on. It's also a space which has a number of plateaus, I think, which can be reached stage by stage depending on time, or in smaller groups as you have so many people to work on it. This is something that would have to go hand in hand with all of the collaboration work that Collabora has been doing. I know it's been in the back of their minds for some time. I'm not sure if it would be feasible to work on Groups separately from their efforts or not, but it would be worth asking. If it's indeed possible, they might be grateful to have help working on some of these items, since they certainly have a list of bugs that take priority over this feature in the short term. I've CC'd Daf, of Colllabora, to see if he has any insight into the feasibility of such an endeavor. There are lots of areas in the collaboration space which might make a suitable project. I'll try to suggest a few options. -- Dafydd ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [sugar] Sugar\Windows won't ship
The video that Scott are saying are available at http://twiki.softwarelivre.org/bin/view/TV 2008/4/28 Carol Lerche [EMAIL PROTECTED]: I assume many people may already have seen this articlehttp://www.olpcnews.com/software/operating_system/aquatic_sugar_childrens_interface.htmland associated video, but those who have not definitely should. It greatly enhanced my appreciation of the design goals of sugar, and in my opinion should be featured on the officially maintained wiki pages about the sugar UI. On Mon, Apr 28, 2008 at 11:02 AM, C. Scott Ananian [EMAIL PROTECTED] wrote: Incidentally, this whole topic of getting Sugar to play nicely with Linux was the *exact* topic of my talk at FISL this year. The slides can be downloaded from http://download.laptop.org/content/conf/20080417-fisl08/cscott/ ; I'm under impression that the actual video will be available at some point from http://fisl.softwarelivre.org/9.0/www/ but my Portuguese is not at a sufficient level for me to know if this has been done yet, and if not when it might be available. --scott -- ( http://cscott.net/ ) ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel -- Always do right, said Mark Twain. This will gratify some people and astonish the rest. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel -- Nathalia Sautchuk Patrício http://nathaliapatricio.blogspot.com/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: FAQ software
Hello i did a little googling on this.. Results only include scripts in python or perl to generate the FAQS. Also drupal and other CMS have especial modules for this purpose. On Wed, Apr 30, 2008 at 4:18 PM, Charles Merriam [EMAIL PROTECTED] wrote: Hi John, A text file and raw HTML to the web page work very well if there is a single FAQ maintainer. Charles On Wed, Apr 23, 2008 at 12:21 PM, John Watlington [EMAIL PROTECTED] wrote: Any recommendations for software for Peru to build an FAQ site ? Yes, there are Wikis. Votes for the easiest to install and maintain ? Is there anything better out there ? wad ___ 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 -- Rafael Enrique Ortiz Guerrero One Laptop Per Child [EMAIL PROTECTED] ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Translation refresh
FYI: The tracking of activities, and marking which ones were in the best state to ship, was part of the build debate earlier this year. The proposal was for OLPC F. to mark some activities as mature enough to consider for deployment and to push them to have a consistent branch name for each time based deployment. OLPC F. couldn't hit the minimum buy-in (put a year number in the versioning) so I dropped all the build fixes. Try again next year. http://wiki.laptop.org/go/2008_Debate_of_Build_and_Release -- Charles On Tue, Apr 22, 2008 at 4:58 AM, Bernie Innocenti [EMAIL PROTECTED] wrote: Kim Quirk wrote: Collaboration is really important to any release... so we need to include some activities that collaborate as part of formal testing. Similarly, Journal is much more than just an activity... so that will have to be part of systematic testing. Browse has to work as it is our connection to the outside world and to our local or school library. So that will have be part of any good test plan. What version(s) of Browse and other important activities are we going to test each OS release with? Here's an example: I installed the G1G1 activity pack some time ago, and I don't even know what versions of activities I'm using. Will this random bunch of activities keep working when Update.2 comes out? Vice-versa, can we expect activities released next year to work with my build 703 system or will I be forced to upgrade at some point? The complexity of an N-to-M compatibility testing is the reason why Linux distributors tend to bundle all the existing applications with the OS (either on installation media or on online repositories). Not addressing these dependencies now will lead to the same compatibility hell that has swamped a well known desktop OS. -- \___/ |___|Bernie Innocenti - http://www.codewiz.org/ \___\ CTO OLPC Europe - http://www.laptop.org/ ___ 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
Re: [Server-devel] FAQ software
Faq-o-Matic used to work great. 2008/4/30 Rafael Enrique Ortiz Guerrero [EMAIL PROTECTED]: Hello i did a little googling on this.. Results only include scripts in python or perl to generate the FAQS. Also drupal and other CMS have especial modules for this purpose. On Wed, Apr 30, 2008 at 4:18 PM, Charles Merriam [EMAIL PROTECTED] wrote: Hi John, A text file and raw HTML to the web page work very well if there is a single FAQ maintainer. Charles On Wed, Apr 23, 2008 at 12:21 PM, John Watlington [EMAIL PROTECTED] wrote: Any recommendations for software for Peru to build an FAQ site ? Yes, there are Wikis. Votes for the easiest to install and maintain ? Is there anything better out there ? wad ___ 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 -- Rafael Enrique Ortiz Guerrero One Laptop Per Child [EMAIL PROTECTED] ___ Server-devel mailing list [EMAIL PROTECTED] http://lists.laptop.org/listinfo/server-devel -- Aaron Huslage - 503.860.1634 http://blog.hact.net IM: AIM - ahuslage; Yahoo - ahuslage; MSN - [EMAIL PROTECTED]; GTalk - [EMAIL PROTECTED] ___ Server-devel mailing list [EMAIL PROTECTED] http://lists.laptop.org/listinfo/server-devel
Re: Build Debate: Followup on Build Naming
On Wed, Apr 30, 2008 at 5:39 PM, Charles Merriam [EMAIL PROTECTED] wrote: After a small novel worth of posts about having time-based release numbers, the push from those that make that choice seem to be to have function based release numbers. The time-based release number was my minimum buy-in as stated, so I'll bow out of build and release problems for another year. I've given up, and I'm just calling it the August release until we decide who makes the decisions around here. --scott -- ( http://cscott.net/ ) ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Controversies
I have made a new Wiki page, http://wiki.laptop.org/go/Controversies, with sections for the major arguments that we have been having over OLPC strategy and tactics. I have also included links to blog posts, mailing list threads, and interviews with Nicholas Negroponte. Additional topics and resources welcome. The purpose is not to promote my own view of things exclusively, but to let everybody involved see who said what when, and to state their own positions on the issues. I request that if you object to something stated on the page, that you say so on the talk page, and include a _brief_ statement of the issue from your point of view on the main page, together with a link to the original documents, or a note saying that it was a personal conversation, and how and where it took place. Interpretation is welcome. When you say this, it sounds like you also mean that, is fine. But no edit wars, please. There is room for multiple points of view. I won't edit what you think if you don't try to tell me what I think. %-[ When I want to hear _your_ opinion, I'll TELL it to you.--any tyrant Next question: Would anybody like us to take these arguments somewhere else? Maybe create a new Policy mailing list? -- Edward Cherlin End Poverty at a Profit by teaching children business http://www.EarthTreasury.org/ The best way to predict the future is to invent it.--Alan Kay ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Gamepad and Rocker Images?
Are there any images (.png or whatever) of the rocker and gamepad keys? Foe example, to use if you wanted to include an image along with 'press square gamepad key' or 'press rocker left' in documentation? I couldn't find anything easily on the wiki. TIA, Bob ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [Server-devel] Extreme Linux Server Available to North America
On Apr 29, 2008, at 7:00 PM, Martin Langhoff wrote: 2008/4/30 Holger Levsen [EMAIL PROTECTED]: On Tuesday 29 April 2008 22:41, Martin Langhoff wrote: If those same machines could be ordered with RAM ranging from 512 to 2GB... instant love ;-) -- add a fanless ext USB drive enclosure and run run run. did you contact the manufacturer? No. But if there are higher spec'ed machines in the pipeline, it'd be good to hear about them. Yes, Peru is in contact and I will try to start a direct discussion. John ___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel
Re: [Server-devel] Extreme Linux Server Available to North America
This is cool but what about $$ ? Sorry this question was aimed to determine possible better solutions about pricing, i'm not involved in decisions about money (talking about my country's pilot) but it would be nice to have a reference, because all the schools and pilots are different and this issue is really important for deployments. So anyway i'm investigating this..but is off-topic right now. pardon. martin -- [EMAIL PROTECTED] [EMAIL PROTECTED] -- School Server Architect - ask interesting questions - don't get distracted with shiny stuff - working code first - http://wiki.laptop.org/go/User:Martinlanghoff ___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel -- Rafael Enrique Ortiz Guerrero One Laptop Per Child [EMAIL PROTECTED] -- Rafael Enrique Ortiz Guerrero One Laptop Per Child [EMAIL PROTECTED] ___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel
Re: [Server-devel] Collaboration between schools
Hi John et al, One minor clarification. I think you mean L3 (IP) VPN (virtual private network) not VLAN (virtual LAN). Let me know if that is not right as you can send an IP packet from one VLAN to another but not from one VPN to another (except in special cases). BTW sounds like people have spent a lot of time at customers lately. If you have time a brief write up of what is important (or not) at each customer would be very helpful. e.g. Peru - Inter-school collaboration not important, managing school servers is a challenge (need GUI?), off the shelf HW is not good fo XS and need customer box, XO updates are a problem, what build of XO and XS they are on etc. You can post that to the wiki (e.g. http://wiki.laptop.org/go/Uruguay and http://wiki.laptop.org/go/Peru) or just send it to the list and I'll copy it over. If you can also bring back a technical contact we can use that to come up with a list of questions which you can run by the customers. Then we can put customer names next to each item on the roadmap and in general verify the priorities of the roadmap with the customers. I don't mean to pile on the work. Just want to make sure we use your unique position of having direct contact with implementers to focus the development. Thanks, Greg S ** I learned more about the network built by the MED in Peru for their schools. Each school is in its own VLAN, and cannot route to the other schools, only to the Internet and to MED servers. They have good economic reasons for encouraging this, but it means that inter-school collaboration will have to happen through data pushed to an MED server (and won't be real-time activity collaboration). wad ___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel
Re: [Server-devel] Collaboration between schools
On Wed, Apr 23, 2008 at 6:28 PM, John Watlington [EMAIL PROTECTED] wrote: I learned more about the network built by the MED in Peru for their schools. Each school is in its own VLAN, and cannot route to the other schools, only to the Internet and to MED servers. They have good economic reasons for encouraging this, but it means that inter-school collaboration will have to happen through data pushed to an MED server (and won't be real-time activity collaboration). This is exactly why I wrote the http://wiki.laptop.org/go/Network_principles document. We should tell Peru that their network infrastructure does not allow collaboration between schools, not feel compelled to solve their problems for them by engineering some fancy multihop proxy system to live on MED servers. In the future, they can create tunnels through the MED servers if they wish to allow collaboration. --scott -- ( http://cscott.net/ ) ___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel
Re: [Server-devel] Collaboration between schools
I would love to hear what are those economic reasons. I am sure that most of you know that if they are connecting to the Internet then the big cost is paid. The rest are peanuts. So... what are those economic reasons to don't allow collaboration between schools? Today economic reasons... don't get surprise when you hear new and different rationalizations. Collaboration between schools would mean total communication between them. You need to understand what is an UGEL (UGEL = administrative unit in charge of many schools in what you would call a county) ... Every UGEL in Peru feels they are owners of this or that territory. If the schools (teachers and pupils) join then they are going further than the UGEL borders. This, in the eyes of UGEL authorities, is not seen as a good control policy (control in all aspects that you can imagine). Are the XOs property of the children? Yes? Then I shut my big mouth. Not? Then we (you, me, all) need to think that this no communication between schools is just the tip of the iceberg. We need to think in different ways to force (friendly) the collaboration and bring down the walls that every small (or big) educative authority needs to put over what they think they control (the XOs, the project, etc.) Best regards, Javier Rodriguez Lima, Peru C. Scott Ananian wrote: On Wed, Apr 23, 2008 at 6:28 PM, John Watlington [EMAIL PROTECTED] wrote: I learned more about the network built by the MED in Peru for their schools. Each school is in its own VLAN, and cannot route to the other schools, only to the Internet and to MED servers. They have good economic reasons for encouraging this, but it means that inter-school collaboration will have to happen through data pushed to an MED server (and won't be real-time activity collaboration). This is exactly why I wrote the http://wiki.laptop.org/go/Network_principles document. We should tell Peru that their network infrastructure does not allow collaboration between schools, not feel compelled to solve their problems for them by engineering some fancy multihop proxy system to live on MED servers. In the future, they can create tunnels through the MED servers if they wish to allow collaboration. --scott ___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel
Re: [Server-devel] GPRS connectivity
Similar but different ... using HSDPA in Australia with an XO. To test with another modem, find the USB vendor and product codes from lsusb or /proc, and try the usbserial module. http://quozl.linux.org.au/bp3-usb/xo.phtml -- James Cameronmailto:[EMAIL PROTECTED] http://quozl.netrek.org/ ___ Server-devel mailing list Server-devel@lists.laptop.org http://lists.laptop.org/listinfo/server-devel
