Re: Raspberry Pi as development platform for XO-1.75

2011-11-28 Thread Martin Langhoff
On Sat, Nov 26, 2011 at 10:55 AM, Sridhar Dhanapalan
srid...@laptop.org.au wrote:
 How useful could a Raspberry Pi be as a development platform for the XO-1.75?

It's a waste of time :-)

In terms of availability, we'll have some C2 units soon, and then a
good batch of ramp units. (Is anyone crying for hw?)

In terms of performance, for big compiles, you're better off looking
at something like a trimslice, though I wish there was an option with
more than 1G DRAM.

I hear that more grunty multicore ARMv7 SoCs are in the pipeline, but
not in the market yet. You may be able to get a devkit for one of
those :-)

My guess is that next year there'll be options...

cheers,



m
-- 
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 mar...@laptop.org -- Software Architect - OLPC
 - ask interesting questions
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Re: Raspberry Pi as development platform for XO-1.75

2011-11-28 Thread Martin Langhoff
Bringing devel back into the loop

On Mon, Nov 28, 2011 at 6:13 PM, James Cameron qu...@laptop.org wrote:
 The New Zealand team don't appear to have any C1, and are hitting B1
 problems regularly ... please ensure they get C2.

Thanks for the info. Will do.

We have some B1s in stock. We are short on C1s because they're in
the S/R testbed. When Wad decides to disband or shrink the testbed,
we'll ship C1s (and/or C2s) more liberally...

But back to this discussion thread, a B1 is /much/ better than a
raspberry pi :-)



m
-- 
 martin.langh...@gmail.com
 mar...@laptop.org -- Software Architect - OLPC
 - ask interesting questions
 - don't get distracted with shiny stuff  - working code first
 - http://wiki.laptop.org/go/User:Martinlanghoff
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Re: Raspberry Pi as development platform for XO-1.75

2011-11-28 Thread James Cameron
On Mon, Nov 28, 2011 at 07:07:10PM -0500, Martin Langhoff wrote:
 Bringing devel back into the loop

Oh.

 On Mon, Nov 28, 2011 at 6:13 PM, James Cameron qu...@laptop.org wrote:
  The New Zealand team don't appear to have any C1, and are hitting B1
  problems regularly ... please ensure they get C2.

Not at all implying that they shouldn't hit B1 problems regularly; the
New Zealand team is doing excellent work and I'm very happy with it.

-- 
James Cameron
http://quozl.linux.org.au/
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Re: Raspberry Pi as development platform for XO-1.75

2011-11-27 Thread Peter Robinson
On Sat, Nov 26, 2011 at 3:55 PM, Sridhar Dhanapalan
srid...@laptop.org.au wrote:
 How useful could a Raspberry Pi be as a development platform for the XO-1.75?

 It looks like the Pi is ARM11 based (v6 arch) and the XO has a v7 arch.

The current 11.3.0 release is based on Fedora 14 armv5tel which runs
already on the Raspberry Pi and it'll happily run sugar. The 12.1.0
and later releases will run the Fedora 17 hardfp based release which
isn't binary compatible. Its as compatible as any other device that is
capable of running Fedora (arm or x86 based) so not completely useless
but at the same time not the best. The specs in terms of speed and
memory are actually not that different to the specs (processor
architecture aside) in the original XO-1 as the more expensive board
has the same amount of RAM.

Peter
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Raspberry Pi as development platform for XO-1.75

2011-11-26 Thread Sridhar Dhanapalan
How useful could a Raspberry Pi be as a development platform for the XO-1.75?

It looks like the Pi is ARM11 based (v6 arch) and the XO has a v7 arch.


Sridhar Dhanapalan
Engineering Manager
One Laptop per Child Australia
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Re: Raspberry Pi as development platform for XO-1.75

2011-11-26 Thread Chris Ball
Hi,

On Sat, Nov 26 2011, Sridhar Dhanapalan wrote:
 How useful could a Raspberry Pi be as a development platform for the XO-1.75?

 It looks like the Pi is ARM11 based (v6 arch) and the XO has a v7 arch.

You've correctly described why it probably won't be useful -- almost
every distribution compiles for ARMv7, including Fedora and Ubuntu,
so our builds won't boot on it at all.

Since you can create ARM binaries on an x86 machine with a cross
compiler, or on the 1.75 itself, the only use case I can think of for
it relating to 1.75 development would have been running our builds.

- Chris.
-- 
Chris Ball   c...@laptop.org   http://printf.net/
One Laptop Per Child
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