[Swift-devel] using Swift Trunk for pbs/beagle: doesn't scale

[Ketan Maheshwari]

It seems at 1600 app task rate, after a while the run stalls. However, this
does not get reflected on the std.err which seems to think tasks are still
active. While std.out reports the waiting thread status and job queues die
down.

On Mon, Jun 27, 2011 at 2:00 PM, Ketan Maheshwari <
ketancmaheshwari at gmail.com> wrote:

> I was trying trunk on beagle today. Seems when I try to scale up the number
> of app tasks, it hangs. To be more precise, I found that above a threshold
> of 1600 app tasks, the run hangs with following periodic std.outs:
>
> No events in 10s.
>
> Registered futures:
> string[] str_roots  Closed, 500 elements, no listeners
> int n  Closed, no listeners
> int n  Closed, no listeners
> int n  Closed, no listeners
> int n  Closed, no listeners
> int n  Closed, no listeners
> int n  Closed, no listeners
> int n  Closed, no listeners
> int n  Closed, no listeners
> int n  Closed, no listeners
> int n  Closed, no listeners
> int n  Closed, no listeners
> int n  Closed, no listeners
> int n  Closed, no listeners
> int n  Closed, no listeners
> int n  Closed, no listeners
> ----
>
> Waiting threads:
> 0-2
> ----
>
> When, the threshold is <=1600 app tasks, it seems to work. The
> SWIFT_MAX_HEAP is 7000MB.
>
>
> --
> Ketan
>
>


-- 
Ketan
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