[ExM Users] scaling Turbine on Vesta

[Tim Armstrong]

It's hard to narrow it down from the info - that script seems fairly
unlikely to cause problems.

What optimisation level? STC/Turbine version? How many processes?  How many
ADLB servers?  Is it every time you run or just intermittently?

Can you confirm that it's not just getting stuck in the leaf function as
well?  E.g. log when it enters and exits.

There is a rare race condition that can deadlock things that I'm just
working on now, but it seems unlikely that you would be encountering that
with that script.

- Tim


On Mon, Apr 14, 2014 at 6:09 PM, Ketan Maheshwari <ketan at mcs.anl.gov> wrote:

> Hi,
>
> Trying to scale up a simple leaf function on Vesta. It seems that the leaf
> function runs at max 259 times and beyond that either it does not return
> any results or crash, but I do not see any error messages or other
> indications either.
>
> On Vesta, an example is at /home/ketan/turbine-output/2014/04/14/23/04/06
>
> Any clue on this?
>
> The Swift source looks as follows:
>
> import io;
>
> @dispatch=WORKER
> (int v) leaf_main(string A[]) "leaf_main" "0.0" "leaf_main_wrap";
> main
> {
>   int rc[];
>   foreach i in [0:9999:1]{
>     rc[i] = leaf_main([fromint(i)]);
>   }
> }
>
>
> Thanks,
> Ketan
>
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