H2M is a ANR-DFG project between
the TADaaM team
at Inria Bordeaux–Sud-Ouest (France)
and the HPC Group
at RWTH Aachen University (Germany)
from 2021 to 2024.
The overall goal is to leverage hwloc's
knowledge of heterogeneous memory up to programming languages such as OpenMP
to ease the allocations of data sets in the appropriate target memories.
News
2024/03/04-06:
Face-to-face meeting at RWTH Aachen University.
2023/09/13-15:
Face-to-face meeting at University of Reims.
2023/03/29-31:
Face-to-face meeting at Inria Bordeaux.
2022/10/19-21:
Face-to-face meeting in the Zuse-Institute in Berlin.
2022/06-08:
J. Klinkenberg visited Inria Bordeaux for 3 months as part of the H2M project.
2022/03/15-17:
Face-to-face meeting in Aachen, where we visited the aixCAVE.
2021/11/18-19:
First in-person meeting (finally!) in Paris.
2021/01/29:
The project kick-off meeting was held in videoconference.
Task 1.1: Review of heterogeneous memory architecture trends.
Task 1.2: Identifying the memory topology in a platform.
Task 1.3: Exposing raw memory characteristics to runtimes.
Task 1.4: Quantification of the influence on application performance.
Task 1.5: Quantification of the influence on application capabilities.
WP2: Abstracting Memory Allocation.
Task 2.1: Memory Allocation with Explicit Data Type Information.
Task 2.2: Specification of Initial Memory Access Pattern.
Task 2.3: Modification of of Memory Access Pattern over Time.
WP3: Runtime Heuristics.
Task 3.1: Thread Placement with respect to Memory Hierarchy.
Task 3.2: Data Placement in Heterogeneous Memory Architectures.
Task 3.3: Data Movement based on Information from Annotated Allocations.
WP4: Defining Concepts to extend Parallel Programming Systems.
Task 4.1: Constructs and APIs to query the memory subsystem.
Task 4.2: Constructs and APIs to annotate memory allocation.
Task 4.3: Constructs and APIs to facilitate data movement.
WP5: Evaluating our Contributions.
Task 5.1: Performance measurements of heterogeneous memory subsystems.
Task 5.2: Implementation of memory allocation abstractions in codes.
Task 5.3: Evaluation of these codes on modern architectures.
Software
All software developed as part of the project is available on H2M Gitlab.
It relies on hwloc latest releases available from its own page.
Publications
J. Klinkenberg, A. Kozhokanova, C. Terboven, C. Foyer, B. Goglin, and E. Jeannot.
H2M: Exploiting Heterogeneous Shared Memory Architectures.
In: Future Generation Computer Systems, 148:39-55, November 2023.
DOIOnline
C. Foyer, B. Goglin, and A. Rubio Proaño.
A Survey of Software Techniques to Emulate Heterogeneous Memory Systems in High-Performance Computing.
In: Parallel Computing, 116:103023, 2023.
DOIOnline
A. Kozhokanova, B. Wang, C. Terboven, and M. Mueller.
Power-aware Computing with Optane Persistent Memory Modules.
In: The 32nd Heterogeneity in Computing Workshop (HCW) in conjunction with IPDPS. St. Petersburg, Florida, USA. May 2023.
C. Foyer, B. Goglin, E. Jeannot, J. Klinkenberg, A. Kozhokanova, and C. Terboven.
H2M: Towards Heuristics for Heterogeneous Memory.
In: Proceedings of the 2022 IEEE Cluster Conference, Heidelberg, Germany, September 2022. Poster.
DOIOnline
B. Goglin and A. Rubio Proaño.
Using Performance Attributes for Managing Heterogeneous Memory in HPC Applications.
In: The 23rd IEEE International Workshop on Parallel and Distributed Scientific and Engineering Computing (PDSEC 2022), held in conjunction with IPDPS 2022, Lyon, France, May 2022.
DOIOnline
C. Foyer and B. Goglin.
Using Bandwidth Throttling to Quantify Application Sensitivity to Heterogeneous Memory,
In: Workshop on Memory Centric High Performance Computing, MCHPC'21,
St. Louis, MO, USA, November 2021. IEEE.
DOIOnline
References
J. Klinkenberg, P. Samfass, M. Bader, C. Terboven and M. S. Müller.
Reactive Task Migration for Hybrid MPI+OpenMP Applications,
In: Parallel Processing and Applied Mathematics (PPAM 2019), Springer International Publishing, pp. 59–71.
DOI
N. Denoyelle, B. Goglin, A. Ilic, E. Jeannot, and L. Sousa.
Modeling Non-Uniform Memory Access on Large Compute Nodes with the Cache-Aware Roofline Model.
In: IEEE Transactions on Parallel and Distributed Systems 30.6 (June 2019), pp. 1374–1389.
DOIOnline
J. Sewall, S. J. Pennycook, A. Duran, C. Terboven, X. Tian, and R. Narayanaswamy.
Developments in memory management in OpenMP.
In: IJHPCN 13.1 (2019), pp. 70–85.
DOI
E. A. León, B. Goglin, and A. R. Proaño.
M&MMs: Navigating Complex Memory Spaces with hwloc.
In: The Fifth International Symposium on Memory Systems Proceedings (MEMSYS19).
Washington, DC: ACM, Oct. 2019, pp. 149–155.
DOIOnline
E. Jeannot, G. Mercier, and F. Tessier.
Process Placement in Multicore Clusters: Algorithmic Issues and Practical Techniques.
In: IEEE Transactions on Parallel and Distributed Systems 25.4 (Apr. 2014), pp. 993–1002.
DOIOnline
A. E. Eichenberger, C. Terboven, M. Wong, and D. an Mey.
The Design of OpenMP Thread Affinity.
In: OpenMP in a Heterogeneous World - 8th International Workshop on OpenMP, IWOMP 2012,Rome, Italy, June 11-13, 2012.
Proceedings. Ed. by B. M. Chapman, F. Massaioli, M. S. Müller, and M. Rorro.
Vol. 7312. Lecture Notes in Computer Science. Springer, 2012, pp. 15–28.
DOI.
