Re: [Starpu-devel] DAG et volume de données

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

Bonjour,

(FTR, this mailing list is supposed to be in english, so that everybody
here can benefit from the answers).

Martin Khannouz, on Wed 29 Jun 2016 14:25:54 +0200, wrote:
> Je sais que lors d'une exécution, il est possible de générer un DAG des
> tâches.
> Je me demandais s'il existait des moyens de générer ce même DAG avec
> comme information supplémentaire le volume de données des dépendances.

The issue is that task dependencies are only consequences of data
dependencies, the data information is not kept.

The information can however be retrieved relatively easily from
tasks.rec: for each task there is a paragraph with e.g.

Name: starpu_sgemm_gemm
Model: starpu_sgemm_gemm
JobId: 26
Handles: 24eb698 24e4d70 24f3db8
Modes: R R RW
Sizes: 1048576 1048576 262144

A script could be easily written to reconstruct the DAG from that file,
we'd gladly commit it in the starpu repository :)

Samuel