[Starpu-devel] Tags and Sequential Consistency

[Cyril Bordage <cyril.bordage@gmail.com>]

Hi,

there is my situation : 
  - I submit a task B, depending by tag on the task A, which reads a data H
  - I submit a task A (with a callback, so the order can be different) which writes H.
In Starpu, if I do not use starpu_data_set_sequential_consistency_flag to disable the consistency on the handle, there is a deadlock if the task B is submitted first.

Could not Starpu detect this pattern and do not add the automatic dependency ? Or maybe is it possible to warn in the debug mode ?

This problem is that, in my case, I have other tasks for which I want to benefit from the automatic dependency. For example a task C, submitted after the task B and writting H. So, I have handled it in a different way, but it is a suggestion.

Thank you.


Cyril.