Re: [Starpu-devel] [trace interpretation]

[Samuel Thibault <samuel.thibault@inria.fr>]

Maxim Abalenkov, le mar. 24 juil. 2018 15:41:10 +0100, a ecrit:
> Do I understand correctly, that the green coloured bars are
> good—threads are working, red are bad—threads are waiting,

Yes. Double-click on the to get more info.

> white arrows are the task dependencies?

They are rather data transfers. Which happen to match task dependencies.

We should probably write down these in some guide in the documentation.

> Any hints on how to improve performance in this particular case would be 
> very welcome.

Well, without knowing the algorithm it's quite hard :)

It can however at least be seen at the bottom that task submission is
still happening during the execution, which is probably not what you
want, you probably have undesired synchronization steps in your main()
function.

Samuel