Run-Time Support for Adaptive Load Balancing
IPDPS '00 Proceedings of the 15 IPDPS 2000 Workshops on Parallel and Distributed Processing
Converse: An Interoperable Framework for Parallel Programming
IPPS '96 Proceedings of the 10th International Parallel Processing Symposium
NAMD: biomolecular simulation on thousands of processors
Proceedings of the 2002 ACM/IEEE conference on Supercomputing
Adapting to Load on Workstation Clusters
FRONTIERS '99 Proceedings of the The 7th Symposium on the Frontiers of Massively Parallel Computation
Proceedings of the 2003 ACM/IEEE conference on Supercomputing
Overview of the Blue Gene/L system architecture
IBM Journal of Research and Development
Blue Gene/L torus interconnection network
IBM Journal of Research and Development
Blue Gene/L programming and operating environment
IBM Journal of Research and Development
Design and exploitation of a high-performance SIMD floating-point unit for Blue Gene/L
IBM Journal of Research and Development
Design and implementation of message-passing services for the Blue Gene/L supercomputer
IBM Journal of Research and Development
Scaling molecular dynamics to 3000 processors with projections: a performance analysis case study
ICCS'03 Proceedings of the 2003 international conference on Computational science
Scalable algorithms for molecular dynamics simulations on commodity clusters
Proceedings of the 2006 ACM/IEEE conference on Supercomputing
Blue matter: approaching the limits of concurrency for classical molecular dynamics
Proceedings of the 2006 ACM/IEEE conference on Supercomputing
Cray XT4: an early evaluation for petascale scientific simulation
Proceedings of the 2007 ACM/IEEE conference on Supercomputing
Proceedings of the 22nd annual international conference on Supercomputing
IBM Journal of Research and Development
Scalable molecular dynamics with NAMD on the IBM Blue Gene/L system
IBM Journal of Research and Development
Mapping communication layouts to network hardware characteristics on massive-scale blue gene systems
Computer Science - Research and Development
Modeling mutations of influenza virus with IBM Blue Gene
IBM Journal of Research and Development
Blue matter: strong scaling of molecular dynamics on blue gene/l
ICCS'06 Proceedings of the 6th international conference on Computational Science - Volume Part II
Collective algorithms for sub-communicators
Proceedings of the 26th ACM international conference on Supercomputing
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NAMD is a scalable molecular dynamics application, which has demonstrated its performance on several parallel computer architectures. Strong scaling is necessary for molecular dynamics as problem size is fixed, and a large number of iterations need to be executed to understand interesting biological phenomenon. The Blue Gene/L machine is a massive source of compute power. It consists of tens of thousands of embedded Power PC 440 processors. In this paper, we present several techniques to scale NAMD to 8192 processors of Blue Gene/L. These include topology specific optimizations, new messaging protocols, load-balancing, and overlap of computation and communication. We were able to achieve 1.2 TF of peak performance for cutoff simulations and 0.99 TF with PME.