Re: [Starpu-devel] parallel_tasks test failures

[Cyril Roelandt <cyril.roelandt@inria.fr>]

On 08/16/2012 09:44 PM, Sébastien Fabbro wrote:
> Hello,

Hello,


> I'm seeing failures [1] for two tests while running the test suite of starpu:
>
> FAIL: parallel_tasks/parallel_kernels
> =====================================
>
> [error] test has been blocked for 600 seconds. Mark it as failed
>
> FAIL: parallel_tasks/parallel_kernels_spmd
> ==========================================
>
> [error] test has been blocked for 600 seconds. Mark it as failed
>
>
> Is this something I should worry about?

Thanks for reporting this bug.

These tests use the "Parallel Heft" scheduler, which is still kind of 
experimental. If you can easily reproduce this bug, could you please run 
these tests in gdb, wait for them to hang, run "thread apply all bt" and 
send us the output ? I think this is a mutex problem, and I'd like to 
know which threads are waiting, and which mutexes are involved.

Cyril Roelandt.