Français Anglais
Accueil Annuaire Plan du site
Accueil > Evenements > Séminaires
Séminaire d'équipe(s) ParSys
Acyclic Partitioning of Large Directed Acyclic Graphs
Julien Herrmann

09 January 2018, 10h30
Salle/Bat : 465/PCRI-N
Contact :

Activités de recherche : Calcul à haute performance

Résumé :
Finding a good partition of a computational directed acyclic graph associated with an algorithm can help find an execution pattern improving data locality, conduct an analysis of data movement, and expose parallel steps. The partition is required to be acyclic , i.e., the inter-part edges between the vertices from different parts should preserve an acyclic dependency structure among the parts.
In this work, we adopt the multilevel approach with coarsening, initial partitioning,
and refinement phases for acyclic partitioning of directed acyclic graphs and develop a direct k -way partitioning scheme. To the best of our knowledge, no such scheme exists in the literature. To ensure the acyclicity of the partition at all times, we propose novel and efficient coarsening and refinement heuristics.
The quality of the computed acyclic partitions is assessed by computing the edge cut, the total volume of communication between the parts, and the critical path
latencies. We use the solution returned by well-known undirected graph partitioners as a baseline to evaluate our acyclic partitioner, knowing that the space of solution is more restricted in our problem.

Pour en savoir plus : https://parsys.lri.fr/seminar.html
Séminaires
Some recent results on the integer linear programm
Théorie des graphes
Friday 30 November 2018 - 00h00
Salle : 445 - PCRI-N
Hung Nguyen .............................................

Maximum Independent Set in H-free graphs
Théorie des graphes
Friday 05 October 2018 - 14h30
Salle : 445 - PCRI-N
Edouard BONNET .............................................

A Family of Tractable Graph Distances
Gestion de données du Web
Wednesday 04 July 2018 - 10h30
Salle : 465 - PCRI-N
Stratis Ioannidis .............................................

Binary pattern of length greater than 14 are abeli
Combinatoire
Friday 29 June 2018 - 14h30
Salle : 445 - PCRI-N
Matthieu Rosenfeld .............................................

Distributionally Robust Optimization with Principa
Optimisation combinatoire et stochastique
Friday 29 June 2018 - 11h00
Salle : 455 - PCRI-N
Dr. Jianqiang Cheng .............................................