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by pvgb
Fri Dec 30, 2011 11:40 pm
Forum: General discussion
Topic: How would a bramble work?
Replies: 11
Views: 8379

Re: How would a bramble work?

<r>It certainly seems possible - I hope to do something like this myself.<br/> <br/> A term to search for is "Beowulf Cluster".<br/> <br/> The Wikipedia page is a start - <URL url="http://en.wikipedia.org/wiki/B.....lf_cluster">http://en.wikipedia.org/wiki/B.....lf_cluster</URL><br/> <br/> A quick l...
by pvgb
Fri Dec 30, 2011 8:38 pm
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 145784

Re: BASIC - more harmful than useful?

<t>tufty said:<br/> <br/> <br/> BASIC covers some of the very first bases of programming – structure, control flow …<br/> <br/> <br/> As part of your polemic you cite the key argument for BASIC !<br/> <br/> Most of the hesitancy I see in beginning programmers stems from an unwillingness to appear a ...
by pvgb
Thu Dec 29, 2011 10:57 pm
Forum: Other projects
Topic: RP-B used as Downloader with separate box as storage
Replies: 20
Views: 4625

Re: RP-B used as Downloader with separate box as storage

<t>Depending on the size of download, you could consider keeping the P4 in a standby (Wake on LAN) mode, and punt the downloaded file as soon as the P4 is awake. As soon as the transfer is complete, put the P4 back to low power mode.<br/> <br/> It is certainly possible to get USB attached enclosures...
by pvgb
Thu Dec 29, 2011 10:29 pm
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 145784

Re: BASIC - more harmful than useful?

<r>No. I fully agree we are not in the Eighties.<br/> <br/> In the Eighties you could go into any one of a number of High Street shops, type in a couple of lines of code and see the machine do something.<br/> <br/> Try that today.<br/> <br/> In the Eighties computer magazines had programs in them th...
by pvgb
Thu Dec 29, 2011 8:55 pm
Forum: General discussion
Topic: For headless deployment?
Replies: 18
Views: 5626

Re: For headless deployment?

<r>I have been running a SheevaPlug <URL url="http://en.wikipedia.org/wiki/SheevaPlug">http://en.wikipedia.org/wiki/SheevaPlug</URL> for getting on for two years – by the nature of the hardware this is headless. (ARM compatible CPU)<br/> <br/> Never had any reason to change from the default Ubuntu.<...
by pvgb
Thu Dec 29, 2011 8:37 pm
Forum: Other projects
Topic: A supercomputer for £100
Replies: 36
Views: 25320

Re: A supercomputer for £100

<t>My understanding is that one of the primary objectives of the RPi is to get people ( especially youngsters ) back into the creation rather than consumption of software.<br/> <br/> One of the skills needed for development of the next wave of systems is that of being able to program for the network...
by pvgb
Sat Dec 24, 2011 12:04 pm
Forum: Other projects
Topic: A supercomputer for £100
Replies: 36
Views: 25320

Re: A supercomputer for £100

<r>Depends what you call a supercomputer ! ( <URL url="http://www.top500.org/">http://www.top500.org/</URL> )<br/> Most of the big machines are now composed of a massive number of processors. Each of the individual processors are probably more computationally able than a RPi.<br/> Four boards togeth...
by pvgb
Thu Dec 22, 2011 10:59 pm
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 145784

Re: BASIC - more harmful than useful?

<r>In the beginning was binary. Toggle switches on the front panel. The Manchester "Baby" (<URL url="http://www.computer50.org/mark......baby.html">http://www.computer50.org/mark......baby.html</URL>) used Spitfire radio switches ( Go and see the reconstruction in the Manchester Science Museum if yo...
by pvgb
Thu Dec 22, 2011 9:59 pm
Forum: Other projects
Topic: Convert an old ATX PSU to a power supply (for your r-pi)
Replies: 26
Views: 10237

Re: Convert an old ATX PSU to a power supply (for your r-pi)

<r>Quote from jkcpalmer on December 21, 2011, 23:54<br/> ... brackets to mount several r-pi's.<br/> <br/> Easy.<br/> <br/> capa polycaprolactone (<URL url="http://en.wikipedia.org/wiki/P.....prolactone">http://en.wikipedia.org/wiki/P.....prolactone</URL>)<br/> <br/> (http://www.mindsetsonline.co.u.....
by pvgb
Wed Dec 21, 2011 10:59 pm
Forum: Other projects
Topic: Passively Cooled Web-Server
Replies: 112
Views: 13783

Re: Passively Cooled Web-Server

<r>Quote from kme on December 21, 2011, 22:37<br/> Scheduled backup and GUI?! What a bizarre combination...<br/> <br/> My favorite is rsync (with options "zavu --delete") + regular tar'ing with bzip2 compression for history versioning.<br/> <br/> But it is important to distinguish between real backu...
by pvgb
Wed Dec 21, 2011 10:44 pm
Forum: Other projects
Topic: Convert an old ATX PSU to a power supply (for your r-pi)
Replies: 26
Views: 10237

Re: Convert an old ATX PSU to a power supply (for your r-pi)

<r>I expect that I am not alone in having hopes of running several boards as a small cluster.<br/> <br/> It seems reasonable to try and enclose them somehow ( Old PC case ? ) and power them from inside the enclosure ( Hey - an old PC case with a PSU in it ! )<br/> As it happens I have a couple of sp...
by pvgb
Wed Dec 21, 2011 10:26 pm
Forum: Other projects
Topic: Passively Cooled Web-Server
Replies: 112
Views: 13783

Re: Passively Cooled Web-Server

<r>Backup ? There are a whole lot of options, some with GUI, some scripts - as a starting point you could look at <URL url="http://www.linuxlinks.com/arti.....ackup.html">http://www.linuxlinks.com/arti.....ackup.html</URL> .<br/> As ever, some will suit your needs better than others.<br/> <br/> I mu...
by pvgb
Mon Dec 19, 2011 10:31 pm
Forum: Other projects
Topic: Passively Cooled Web-Server
Replies: 112
Views: 13783

Re: Passively Cooled Web-Server

Quote from MG2R on December 19, 2011, 22:22
pvgb asked for it, I provided :)


Much appreciated.

Adds the option of powering multiple boards ( would that be Pi squared ? ) from one PSU.
by pvgb
Mon Dec 19, 2011 10:26 pm
Forum: Other projects
Topic: Passively Cooled Web-Server
Replies: 112
Views: 13783

Re: Passively Cooled Web-Server

<t>Quote from pupil160 on December 19, 2011, 22:04<br/> I do not NEED an Ethernet cable, it would just be for convenience.<br/> <br/> I actually keep a (long) Ethernet cable in the house just for emergencies. ( Never did trust this wireless networking lark. )<br/> Of course, my last router failed wh...
by pvgb
Mon Dec 19, 2011 9:52 pm
Forum: Other projects
Topic: Passively Cooled Web-Server
Replies: 112
Views: 13783

Re: Passively Cooled Web-Server

<r>Quote from pupil160 on December 19, 2011, 20:21<br/> I've already got the case<br/> <br/> Is that the shuttle case on the e-bay page ? ( Always liked the look, never could afford one)<br/> Plenty of room in there, plus it looks like there is a PSU in it. Some nice person will doubtless tell us ho...
by pvgb
Sun Dec 18, 2011 7:22 pm
Forum: Off topic discussion
Topic: Competition.
Replies: 15
Views: 2623

Re: Competition.

/* Wipes tears of laughter from face, walks away, still chuckling */
by pvgb
Sun Dec 18, 2011 7:14 pm
Forum: Other projects
Topic: Passively Cooled Web-Server
Replies: 112
Views: 13783

Re: Passively Cooled Web-Server

<t>For the processor board I would agree that you probably do not need any cooling. I have a Sheeva Plug device as a local web server, and it is the PSU that gets warm - not the board. ( That is ARM based as well ) You may have to be a bit more careful with the drive - some of them run a bit hotter ...
by pvgb
Sun Dec 18, 2011 4:35 pm
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 145784

Re: BASIC - more harmful than useful?

<r>When I want to start a flame war, I usually make the assertion that C is warmed over PDP macro assembler anyway ( lights blue touch paper and retires ). I use C most days, and quite enjoy its quirks. (not to the extent of participating in <URL url="http://www.ioccc.org/">http://www.ioccc.org/</UR...
by pvgb
Sat Dec 17, 2011 2:05 pm
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 145784

Re: BASIC - more harmful than useful?

<t>Ladies, Gentlemen, we are all making assumptions here. The first assumption is that everybody writes the type of programs we write, the second is that everybody sees the problem the same way we do.<br/> <br/> I have done some assembler. Easy enough once you get the hang of it. I once wrote an ass...
by pvgb
Fri Dec 16, 2011 10:32 pm
Forum: General discussion
Topic: UK Government: Children to be taught programming
Replies: 93
Views: 13782

Re: UK Government: Children to be taught programming

<t>I propose honorary Hero status to all of those teachers who stay behind with the after school clubs to improve programming skills ( and frankly who teach them as part of the day job ). With hindsight, I was perhaps too dismissive of the programming skills of some teachers - apologies for that.<br...
by pvgb
Fri Dec 16, 2011 9:41 pm
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 145784

Re: BASIC - more harmful than useful?

<t>If there was one ideal programming language we would all be using it.<br/> <br/> ( Actually, some aged contrarians like me would be holding out for SNOBOL/APL/PDP 8 Assembler/Occam/Brainf**k/<your-niche-language-here> - (Hey, is this the first pseudo BNF on this forum ?) )<br/> <br/> Once you can...
by pvgb
Fri Dec 16, 2011 12:42 am
Forum: General discussion
Topic: UK Government: Children to be taught programming
Replies: 93
Views: 13782

Re: UK Government: Children to be taught programming

<t>Back in the day, Byte magazine ran an inside the back cover piece about what would happen to the earnings potential for musicians if there was legislation to force organisations to have a band.<br/> <br/> One of the reasons that we are all interested in Raspi is so that we can get people interest...
by pvgb
Fri Dec 16, 2011 12:27 am
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 145784

Re: BASIC - more harmful than useful?

<t>We forget that the B in Basic stands for "Beginners".<br/> <br/> I think that somebody who can program in Basic can at least program, and has the foundation of learning to program in many of the other languages that we all preach about.<br/> <br/> Conversely, somebody who can't program can't even...
by pvgb
Mon Oct 17, 2011 10:31 pm
Forum: Staffroom, classroom and projects
Topic: Fond memories
Replies: 42
Views: 10433

Re: Fond memories

<r>Quote from hordecore on August 14, 2011, 02:09<br/> My earliest might have been the toshiba MSX, before i eventually got an Amstrad CPC464 green screen. (Oh Dizzy, why haven't you been remade yet!). Mostly typing listings from magazines etc but i vaguely recall getting a sprite to move around on ...
by pvgb
Mon Oct 17, 2011 10:02 pm
Forum: General discussion
Topic: what will you name your pis?
Replies: 104
Views: 16585

Re: what will you name your pis?

<r>There is something quite satisfying about naming machines, and you get to feel a bit smug about a theme to explain to everybody else.<br/> <br/> My production machines are \'Classic\' Race winners ( Derby etc.) ( The LNER used the theme for steam locomotives ...)<br/> I have named lab machines af...

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