Re: [Starpu-devel] [Morse-devel] MPI tags limitation with Starpu

[Mathieu Faverge <mathieu.faverge@inria.fr>]

Sameh,

Since it looks like it will need some discussions. If you are sure you 
are using StarPU., Comment the section of the code that updates the tag 
fields based on MPI_TAG_UB, and that should be fine for now, for your code.

You can follow the evolution of this discussion on:
https://gitlab.inria.fr/solverstack/chameleon/issues/17

Best,
Mathieu



Le 21/02/2017 à 11:54, Samuel Thibault a écrit :
> Nathalie Furmento, on mar. 21 févr. 2017 11:46:30 +0100, wrote:
> > Yes, for StarPU 1.2. However this is a internal mechanism, i am not sure
> > the application should make any assumptions on how we handle MPI comms,
> > and we may want to change it in futur releases depending on the MPI
> > implementation.
> Perhaps StarPU could provide a function that returns the proper TAG_UB
> depending on how tags are handled?
>
> Samuel
> .


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Mathieu Faverge
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