On Fri, Dec 4, 2009 at 7:38 AM, Duncan Coutts
wrote:
> Wait! This is not going to work!
>
> You cannot use the MTGen from the mersenne-random in a concurrent IO
> program because the C code uses a single global mutable RNG state.
So use the PRNG in the statistics package instead. It's got some n
On 04/12/09 11:51, Patrick Caldon wrote:
I'm looking for the "right" concurrency library/semantics for what
should be a reasonably simple problem.
I have a little simulator:
runWorldSim :: MTGen -> SimState -> IO SimState
it takes about a second to run on a PC. It's functional except it
wh
On Fri, 2009-12-04 at 22:51 +1100, Patrick Caldon wrote:
> I'm looking for the "right" concurrency library/semantics for what
> should be a reasonably simple problem.
>
> I have a little simulator:
>
> runWorldSim :: MTGen -> SimState -> IO SimState
>
> it takes about a second to run on a PC. I
On Fri, Dec 4, 2009 at 12:28 PM, Patrick Caldon wrote:
> Neil Brown wrote:
>
>> Patrick Caldon wrote:
>>
>>>
>>> I'm looking for the "right" concurrency library/semantics for what should
>>> be a reasonably simple problem.
>>>
>>> I have a little simulator:
>>>
>>> runWorldSim :: MTGen -> SimStat
Neil Brown wrote:
Patrick Caldon wrote:
I'm looking for the "right" concurrency library/semantics for what
should be a reasonably simple problem.
I have a little simulator:
runWorldSim :: MTGen -> SimState -> IO SimState
it takes about a second to run on a PC. It's functional except it
wh
Patrick Caldon wrote:
I'm looking for the "right" concurrency library/semantics for what
should be a reasonably simple problem.
I have a little simulator:
runWorldSim :: MTGen -> SimState -> IO SimState
it takes about a second to run on a PC. It's functional except it
whacks the rng, which
Ivan Lazar Miljenovic wrote:
Patrick Caldon writes:
it takes about a second to run on a PC. It's functional except it
whacks the rng, which needs IO. I run 5-10 of these jobs, and then
use:
Which RNG are you using that it needs so much IO?
Mersenne Twister, System.Random.Mersenne. The
Patrick Caldon writes:
> it takes about a second to run on a PC. It's functional except it
> whacks the rng, which needs IO. I run 5-10 of these jobs, and then
> use:
Which RNG are you using that it needs so much IO?
>
> mergeWorld :: [SimState] -> SimState
>
> to pick the best features of the r
I'm looking for the "right" concurrency library/semantics for what
should be a reasonably simple problem.
I have a little simulator:
runWorldSim :: MTGen -> SimState -> IO SimState
it takes about a second to run on a PC. It's functional except it whacks
the rng, which needs IO. I run 5-10 o
