[MLton] Multicore CPU's and MLton
Sun, 3 Jul 2005 14:44:41 -0400 (EDT)
> Anway, I was wondering is there any quick and dirty way for MLton to
> take advantage of that extra core... SML/NJ CM has a parallel build..
> option which is nice..
But SML/NJ's parallel build just launches a separate sml process and
coordinates which source files it should compile. I.e., it is process
level parallelism, not thread level or even SML function level
> but it seems like the whole program approach to
> MLton seems to be in conflict with the hardware CPU trends...
Perhaps; I don't actually understand multi-core... From the application
level, do they look any different than a SMP system? Which is to say,
I've been running dual processor systems for over 5 years now, and I've
never felt like I needed more parallelism in any application. I want
multi-processors so that I can run multi processes -- a mlton build, xmms,
oggenc, mythtv, etc. -- simultaneously.
Anyways, I just don't get the hype around multi-core, because it seems to
have started this frenzy that suggests that there is all this parallelism
that has just been languishing due to the lack of sufficient processing
units -- when, it's just the opposite. We can't even keep a modern
processor's pipeline full for more than a few cycles at a time, let along
more than one.
> On, a related note. are there any cool opitmizations that could be
> applied to make ML programs more concurent in a some what transparent
Perhaps. The mostly-functional nature of ML seems to suggest that it is
parallelizable, but not that even pH (parallel Haskell) didn't make much
> Multi-core systems with lots of concurent threads seem to be the
I'll believe it when I see it.