I agree that the effect of laziness can be very hard to grasp, sometimes it even feels that I traded the annoying side effects from imperative programming to "lazy effects" in functional programming... Can't seem to have my cake and lazily eat it :-)

On Sun, Mar 22, 2009 at 10:03 AM, Patai Gergely <patai_gergely@fastmail.fm> wrote:

Hello all,

I entered a little proposal in the issue tracker:

http://hackage.haskell.org/trac/summer-of-code/ticket/1570

As I see it, the graphical part could be a warm-up exercise with an
already useful product, and interaction with the rts would be the actual
challenge. Reasoning about laziness is far from trivial (at least I
often feel lost when trying to grok all the interaction within Reactive
;), and being able to browse profiler output on the spot is something I
felt the need for a few times already. Eventually, this could be a
contribution to an IDE project, even though it could as well remain a
standalone application for all the emacs/vi folk.

Profiling tools for parallel programs are in the make already, but I
haven't seen anything more convenient than hp2ps and little add hoc
solutions for analysing resource usage patterns. How do you all go about
profiling?

Gergely

--
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