The implementation of the Cilk-5 multithreaded language
PLDI '98 Proceedings of the ACM SIGPLAN 1998 conference on Programming language design and implementation
OpenMP Extensions for Thread Groups and Their Run-Time Support
LCPC '00 Proceedings of the 13th International Workshop on Languages and Compilers for Parallel Computing-Revised Papers
Performance Evaluation of OpenMP Applications with Nested Parallelism
LCR '00 Selected Papers from the 5th International Workshop on Languages, Compilers, and Run-Time Systems for Scalable Computers
Automatic thread distribution for nested parallelism in OpenMP
Proceedings of the 19th annual international conference on Supercomputing
Lightweight reference affinity analysis
Proceedings of the 19th annual international conference on Supercomputing
Hardware profile-guided automatic page placement for ccNUMA systems
Proceedings of the eleventh ACM SIGPLAN symposium on Principles and practice of parallel programming
Load balancing and OpenMP implementation of nested parallelism
Parallel Computing - OpenMp
Extending the OpenMP standard for thread mapping and grouping
IWOMP'05/IWOMP'06 Proceedings of the 2005 and 2006 international conference on OpenMP shared memory parallel programming
Hierarchical multithreading: programming model and system software
IPDPS'06 Proceedings of the 20th international conference on Parallel and distributed processing
Dynamic Task and Data Placement over NUMA Architectures: An OpenMP Runtime Perspective
IWOMP '09 Proceedings of the 5th International Workshop on OpenMP: Evolving OpenMP in an Age of Extreme Parallelism
The openip open source image processing library
Proceedings of the international conference on Multimedia
Binding nested OpenMP programs on hierarchical memory architectures
IWOMP'10 Proceedings of the 6th international conference on Beyond Loop Level Parallelism in OpenMP: accelerators, Tasking and more
How OpenMP applications get more benefit from many-core era
IWOMP'10 Proceedings of the 6th international conference on Beyond Loop Level Parallelism in OpenMP: accelerators, Tasking and more
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Exploiting the full computational power of always deeper hierarchical multiprocessor machines requires a very careful distribution of threads and data among the underlying non-uniform architecture. The emergence of multi-core chips and NUMA machines makes it important to minimize the number of remote memory accesses, to favor cache affinities, and to guarantee fast completion of synchronization steps. By using the BubbleSched platform as a threading backend for the GOMP OpenMP compiler, we are able to easily transpose affinities of thread teams into scheduling hints using abstractions called bubbles. We then propose a scheduling strategy suited to nested OpenMP parallelism. The resulting preliminary performance evaluations show an important improvement of the speedup on a typical NAS OpenMP benchmark application.