[Swift-devel] Re: Heap space being exhausted

[Allan Espinosa]

Ahhh, I always thought its for all the foreach statemtns.

Thanks for that clarification! :)

-Allan

2010/6/2 Mihael Hategan <hategan at mcs.anl.gov>:
> On Wed, 2010-06-02 at 19:03 -0500, Allan Espinosa wrote:
>> My Cybershake workflow.  its basically a 2 level for loop with varying
>> inner  loop sizes.
>>
>> foreach i in (~4k elements) {
>>   x = f();
>>   foreach (20-2k elements) {
>>      ...
>>  }
>> }
>
> Yep. You have a winner. Max threads = 1024 * 1024.
>
> You should adjust that parameter accordingly. I.e. foreach.max.threads =
> sqrt(maxTotalThreads).
>
>>
>> 2010/6/2 Mihael Hategan <hategan at mcs.anl.gov>:
>> > On Wed, 2010-06-02 at 18:40 -0500, Allan Espinosa wrote:
>> >> I tried a HEAPMAX of 4GB.
>> >>
>> >> No memory problems so far :)
>> >
>> > Still odd. What's the swift script?
>> >
>> > I'm asking because foreach.max.threads should work, but it applies to
>> > each individual foreach rather than globally.
>> >
>> >>
>> >> 2010/6/2 Mihael Hategan <hategan at mcs.anl.gov>:
>> >> > On Wed, 2010-06-02 at 17:47 -0500, Mihael Hategan wrote:
>> >> >> On Wed, 2010-06-02 at 17:32 -0500, Allan Espinosa wrote:
>> >> >> > btw
>> >> >> >
>> >> >> > foreach.maxthreads=1024
>> >> >>
>> >> >> or more heapmax.
>> >> >
>> >> > Ehm, I though you found a solution :)
>> >> >
>> >> > What's the swift script?