On 02/05/10 12:10, Sebastian Fischer wrote:
Is the above output intended?
Yes.
Interesting.
Note that catching all exceptions is rarely the right thing to do. See
http://www.haskell.org/ghc/docs/6.12.2/html/libraries/base-4.2.0.1/Control-Exception.html#4
for more details.
I should have
| Does this mean DPH is ready for abuse?
|
| The wiki page sounds pretty tentative, but it looks like it's been awhile
| since it's been updated.
|
| http://www.haskell.org/haskellwiki/GHC/Data_Parallel_Haskell
In truth, nested data parallelism has taken longer than we'd hoped to be ready
for
On Mon, May 3, 2010 at 11:12 AM, Simon Peyton-Jones
simo...@microsoft.comwrote:
| Does this mean DPH is ready for abuse?
|
| The wiki page sounds pretty tentative, but it looks like it's been awhile
| since it's been updated.
|
| http://www.haskell.org/haskellwiki/GHC/Data_Parallel_Haskell
On 03/05/2010, at 22:04, Johan Tibell wrote:
On Mon, May 3, 2010 at 11:12 AM, Simon Peyton-Jones simo...@microsoft.com
wrote:
| Does this mean DPH is ready for abuse?
|
| The wiki page sounds pretty tentative, but it looks like it's been awhile
| since it's been updated.
|
|
Hi,
on that topic, consider this (rather trivial) array:
a = array (1,10) [ (i,f i) | i -[1..10]] where
f 1 = 1
f 2 = 1
f i = a!(i-1) + a!(i-2)
(aah, school ;)
Right now, I am abusing vector in ST by doing this:
a - new
a' - freeze a
forM_ [3..10] $ \i - do
write a (a'!(i-1) +
choener:
To summarise: I need arrays that allow in-place updates.
Many of the array libraries provide both mutable and immutable
interfaces, typically in ST or IO, including vector.
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Glasgow-haskell-users mailing list
You can certainly create an array with these values, but in the provided code
it looks like each successive array element has a serial dependency on the
previous two elements. How were you expecting it to parallelise?
Repa arrays don't support visible destructive update. For many algorithms
On 03/05/2010, at 10:04 PM, Johan Tibell wrote:
On Mon, May 3, 2010 at 11:12 AM, Simon Peyton-Jones simo...@microsoft.com
wrote:
| Does this mean DPH is ready for abuse?
|
| The wiki page sounds pretty tentative, but it looks like it's been awhile
| since it's been updated.
|
|
On 04/05/2010, at 09:21, Christian Höner zu Siederdissen wrote:
Hi,
on that topic, consider this (rather trivial) array:
a = array (1,10) [ (i,f i) | i -[1..10]] where
f 1 = 1
f 2 = 1
f i = a!(i-1) + a!(i-2)
(aah, school ;)
Right now, I am abusing vector in ST by doing this:
* Ben Lippmeier b...@ouroborus.net [04.05.2010 02:21]:
You can certainly create an array with these values, but in the provided code
it looks like each successive array element has a serial dependency on the
previous two elements. How were you expecting it to parallelise?
actually, in
* Roman Leshchinskiy r...@cse.unsw.edu.au [04.05.2010 02:32]:
On 04/05/2010, at 09:21, Christian Höner zu Siederdissen wrote:
Hi,
on that topic, consider this (rather trivial) array:
a = array (1,10) [ (i,f i) | i -[1..10]] where
f 1 = 1
f 2 = 1
f i = a!(i-1) + a!(i-2)
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