From: Xavier Leroy <Xavier.Leroy@inria.fr>
To: "Alexander V. Voinov" <avv@quasar.ipa.nw.ru>
Cc: Mattias Waldau <mattias.waldau@abc.se>, Caml list <caml-list@inria.fr>
Subject: Re: [Caml-list] Will Ocaml use a 4-way SMP box without splitting the program into separate processes?
Date: Fri, 20 Jul 2001 16:01:56 +0200 [thread overview]
Message-ID: <20010720160156.H9351@pauillac.inria.fr> (raw)
In-Reply-To: <3B539C0A.B8FA83A@quasar.ipa.nw.ru>; from avv@quasar.ipa.nw.ru on Mon, Jul 16, 2001 at 06:59:38PM -0700
> > > Doesn't this mean that a process can never use more than one processor?
> >
> > Yes, if the process is entirely composed of Caml code. Long-running C
> > primitives release the lock, meaning that your 4-processor machine can
> > have 1 processor running Caml code and 3 executing C primitives,
> > e.g. database queries.
>
> Is this true for both native and bytecode?
Yes. The GC and many parts of the runtime system common to both
compilers are not thread-safe.
- Xavier Leroy
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prev parent reply other threads:[~2001-07-20 14:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-13 19:59 Mattias Waldau
2001-07-15 11:32 ` Xavier Leroy
2001-07-15 12:15 ` William Chesters
2001-07-17 1:59 ` Alexander V. Voinov
2001-07-20 14:01 ` Xavier Leroy [this message]
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