[Haskell-cafe] Parallel Haskell on an M2 Mac

Harendra Kumar harendra.kumar at gmail.com
Sat Jan 20 19:10:28 UTC 2024

Hi Dennis,

For easy concurrent/parallel processing you may find the Haskell
library "streamly" to be helpful. Please see the quick tutorial here:
. There are some concurrency/parallelism examples provided in this
tutorial. If you want to run some external programs concurrently and
process the output in a Haskell program you may also want to take a
look at the streamly-process package here:
https://hackage.haskell.org/package/streamly-process .

In case you need further help on using the library, I can help you
out. I am a contributor to the library.


On Fri, 19 Jan 2024 at 11:52, Dennis Raddle <dennis.raddle at gmail.com> wrote:
> I don't know a lot about parallel Haskell, so I'm wondering in general terms how that would work with my M2 Mac. I have a search task that's easily run in parallel. For example, I might map a function over a list, and each item's evaluation can run in parallel. On the M2 MacBook I have, there are 4 efficiency cores with 1 thread each, and 8 performance cores with 2 threads each. Is it fairly easy to use parallel Haskell to spread the task over these 20 possible threads? By any chance could I limit it to using the performance cores if that helps the speed?
> Thanks,
> Dennis
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