On Mon, Oct 13, 2003 at 11:13:56AM +0200, Wolfgang Thaller wrote:
The reason why we currently do not take advantage of SMP is
that the
Haskell Heap is a shared data structure which is modified
whenever a
thunk (an unevaluated expression) is evaluated. Using
synchronisation
William Lee Irwin III [EMAIL PROTECTED] discusses SMP threading issues:
On Mon, Oct 13, 2003 at 12:02:52PM -0400, Jan-Willem Maessen wrote:
In reality you probably want to use some sort of thin lock / fat lock
approach a la Java. Is the location thinly locked? If so, CAS in a
fat lock
: About Haskell Thread Model
I am a new learner of Haskell and I am interested in Haskell's
concurrent model. Can somebody give me a brief intro about Haskell's
thread model, like how the use-level threads are mapped to kernel
thread
and what scheduling mechanism that Haskell uses, or point me
On Sat, Oct 11, 2003 at 10:58:04PM +0200, Wolfgang Thaller wrote:
If you compile the bleeding-edge GHC from the CVS HEAD, you'll get
something else; while most threads (those created using forkIO) are
still light-weight threads that are scheduled in just one kernel
thread, you can also
William Lee Irwin III wrote:
On Sat, Oct 11, 2003 at 10:58:04PM +0200, Wolfgang Thaller wrote:
You should also note that no Haskell implementation currently supports
SMP; even when multiple kernel threads are used, there is a mutual
exclusion lock on the Haskell heap, so a multithreaded Haskell
William Lee Irwin III wrote:
That's a painful-sounding state of affairs, though not entirely
unexpected. It would be interesting to hear of BKL breakup efforts
for Haskell runtime systems, though anymore I'm totally ignorant of
what the devil is going on in userspace except database-only
, October 12, 2003 4:58 AM
To: Yang, Qing
Cc: [EMAIL PROTECTED]
Subject: Re: About Haskell Thread Model
I am a new learner of Haskell and I am interested in Haskell's
concurrent model. Can somebody give me a brief intro about Haskell's
thread model, like how the use-level threads are mapped to kernel
Do you have some experience or knowledge about Parallel Haskell? And
what you mentioned in you previous email is all about Concurrent
Haskell
or about the both?
Everything I said was about Concurrent Haskell. I have no experience
with Parallel Haskell. All the binaries available on the GHC web
On Mon, 13 Oct 2003, Wolfgang Thaller wrote:
Do you have some experience or knowledge about Parallel Haskell? And
Parallel Haskell runs, but there are problems. Unless someone has slipped
something past me, there is no parallel implementation for Release 6 yet,
so if you want to tinker
William Lee Irwin III [EMAIL PROTECTED] asks about true SMP
haskell.
On Mon, Oct 13, 2003 at 11:13:56AM +0200, Wolfgang Thaller wrote:
The reason why we currently do not take advantage of SMP is that the
Haskell Heap is a shared data structure which is modified whenever a
thunk (an
William Lee Irwin III [EMAIL PROTECTED] asks about true SMP
cmpxchg and then taking a blocking lock sounds like the 2-tier locking
supported with Linux' new futex system calls. I wonder how they chose
to block in the older GHC RTS.
On Mon, Oct 13, 2003 at 12:02:52PM -0400, Jan-Willem Maessen
From www.haskell.org, there's a link Haskell Compilers and
Interpreters; and from there, the first link leads to
www.haskell.org/hugs, which is Hugs' home page.
Cheers,
Wolfgang
___
Haskell mailing list
[EMAIL PROTECTED]
I am a new learner of Haskell and I am interested in Haskell's
concurrent model. Can somebody give me a brief intro about Haskell's
thread model, like how the use-level threads are mapped to kernel
thread
and what scheduling mechanism that Haskell uses, or point me to some
links or documents that
Wolfgang,
How can I get source of Hugs? (frm http://www.haskell.org?).
Regards, Vasili
From: Wolfgang Thaller <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
CC: [EMAIL PROTECTED]
Subject: Re: About Haskell Thread Model
Date: Sat, 11 Oct 2003 22:58:04 +0200
I am a new learner of Haskell
Hello Yang Qing,
Go to: http://www.haskell.org/~simonmar/bib.htmland also http://sourceforge.net/forum/forum.php?forum_id=253134. The last time I read code I believe Simon Marlowe used monads to implement threads in Haskell. Read the code and you will see.
Regards, Vasili I.Galchin
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