Hi Brad,
a) I'm determining that is using only 2 cpus monitoring the activity of the
process builded during execution and I can see from the top linux command a
cpu usage of around 200% (on a maximum of 400%) for all the time(and it
does never exceed 200%).
b) running hello5-taskpar.chpl display me only 2 messages too...
I have tested this also on another 4 cores i7 machine and looks the same.
I have read the PERFORMANCE text and right now I'm compiling with this
options:
--fast-followers --fast -optimize --specialize --local --no-checks
--no-debug --optimize-loop-iterators --optimize-on-clauses
Hi Andrea --
>
> We're working towards a feature freeze deadline for the next release at
> present, so it may be a bit before we're able to look at your code in
> detail. The "only using 2 CPUs" issue is surprising though. I'm curious:
>
> a) How are you determining this?
>
> b) How many messages do you get if you compile and run
> examples/hello5-taskpar.chpl?
>
> If you haven't found it yet, be sure to read $CHPL_HOME/PERFORMANCE and,
> if you aren't, to throw the --fast flag when compiling for performance runs.
>
> Hope to spend more time on this soon, but curious for your answers to
> the above,
> -Brad
>
>
>
> On Thu, 5 Mar 2015, Andrea Peruffo wrote:
>
> Hi list,
>> I'm pretty new to chapel and to take a taste of the language I implemented
>> this:
>>
>> https://github.com/andreaTP/kmeans/tree/master/chapel
>>
>> I'm using chapel 1.10.0, but the overall performances are not great
>> (around
>> 1500 millis) and I think that the main problem is that I have a 4 cores i7
>> laptop but I can see that only 2 CPUs are used by the program.
>>
>> Also my implementation can have any coding problem, due to ignorance on
>> the
>> language.
>>
>>
>> Thanks in advance.
>>
>>
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