Re: [Starpu-devel] pheft problem?

[Miguel Palhas <mpalhas@gmail.com>]

I forgot to add some information...

This only happens when i set the codelet for that task to use only STARPU_CUDA (while it depends on data that is ALWAYS executed on a CPU task)

Also, if i switch the task implementation, and make it just an empty function, the problem still persists

This two things lead me to believe this is an issue related with memory transfers within pheft. It seems to be waiting for data to be available. But i guess the fact that peager works fine proves that it is not a dependency problem on my code

On Tue, Aug 13, 2013 at 2:17 AM, Miguel Palhas <mpalhas@gmail.com> wrote:

When using pheft on my algorithm, i have a problem with a specific task, which hangs the scheduler as soon as it's sampling information has 10 executions

As soon as i delete the information for that specific task (~/.starpu/sampling/codelets/task_name), i can once again run the task with no problem, until around 10 executions are stored again

After a very long bug hunting, i narrowed down the problem to here. If i switch from pheft to peager, everything runs smoothly.

Is this a bug with the pheft scheduler?

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Cumprimentos

Miguel Palhas

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Cumprimentos

Miguel Palhas