[Haskell-cafe] Parallel Profiling

Dominic Steinitz dominic at steinitz.org
Thu Apr 2 06:35:01 UTC 2015

Hi Amos,

Thanks very much - I am taking a look.

Dominic Steinitz
dominic at steinitz.org

On 30 Mar 2015, at 22:05, Amos Robinson <amos.robinson at gmail.com> wrote:

> Hi Dominic,
> A few years ago we wrote a program for analysing DPH runs, dph-event-seer. It provides a few general analyses like percent of time with N threads running, time between wake-ups etc. You might find it interesting, but I haven't actually looked at ghc-events-analyse, so I don't know what it provides.
> I'm sorry, but to compile it without DPH you'd have to modify it to remove DphOps*.
> https://github.com/ghc/packages-dph/blob/master/dph-event-seer/src/Main.hs
> Amos
> On Tue, 31 Mar 2015 at 04:38 Dominic Steinitz <dominic at steinitz.org> wrote:
> Does anyone know of any tools for analysing parallel program performance?
> I am trying to use threadscope but it keeps crashing with my 100M log file and ghc-events-analyze is not going to help as I have many hundreds of threads all carrying out the same computation. I think I’d like a library that would allow me to construct my own analyses rather than display them via GTK. There is ghc-events but that seems to be just for parsing the logs and I couldn’t find anything that used it in the way I would like to (apart from threadscope and ghc-events-analyze of course).
> Thanks
> Dominic Steinitz
> dominic at steinitz.org
> http://idontgetoutmuch.wordpress.com
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