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Towards millions of communicating threads

Hoang-Vu Dang, Marc Snir, William Gropp
2016 Proceedings of the 23rd European MPI Users' Group Meeting on - EuroMPI 2016  
We show that, with this change, one can e ciently support millions of concurrently communicating light-weight threads using send-receive communication. expected send list; if none is found, it is appended  ...  The thread library will wake up threads irrespective of the status of the communication they are waiting for; the thread will check some flag and yield again, if the communication is not complete.  ...  hash-table. • A resource-aware and locality-aware concurrent memory pool for packet management. • An MPI runtime design for scaling up to million communicating threads.  ... 
doi:10.1145/2966884.2966914 dblp:conf/pvm/DangSG16 fatcat:dygqi4rssnfw5bv4sdtwgtggxu

IMPROVING PERFORMANCE IN HPC SYSTEM UNDER POWER CONSUMPTIONS LIMITATIONS

Muhammad Usman Ashraf
2019 International Journal of Advanced Research in Computer Science  
towards everyday life.  ...  of performance (10 15 calculations per second).  ...  Rather than utilizing the communication stack of the message-passing library, the vShark makes use of threads.  ... 
doi:10.26483/ijarcs.v10i2.6397 fatcat:k3l3lk5kuzhnldn5b2qzkh4eia

Massively-Parallel Molecular Dynamics Simulation of Clathrate Hydrates on Blue Gene Platforms

Niall English
2013 Energies  
model of Molinero et al. applied to simulation of methane hydrates, using systems consisting of several million particles, on a variety of  ...  Massively-parallel classical equilibrium molecular dynamics (MD) simulations have been performed to investigate the computational performance of the Simple Point Charge (SPC) model and single-particle  ...  INCITE (Argonne National Laboratory) Discretionary Access Programme for access to, and provision of, Blue Gene/L, /P and /Q computational resources.  ... 
doi:10.3390/en6063072 fatcat:p6o3pfxo65edpcc3qcapmtqrga

Adapting the serial Alpgen parton-interaction generator to simulate LHC collisions on millions of parallel threads

J.T. Childers, T.D. Uram, T.J. LeCompte, M.E. Papka, D.P. Benjamin
2017 Computer Physics Communications  
Alpgen is a Monte Carlo event generation application that is used by LHC experiments in the simulation of collisions that take place in the Large Hadron Collider.  ...  As the LHC moves to higher energies and luminosity, the demand for computing resources increases accordingly and will soon outpace the growth of the Worldwide LHC Computing Grid.  ...  a million threads.  ... 
doi:10.1016/j.cpc.2016.09.013 fatcat:7nqyft5jdrcg7hxisptvmomyvq

Performance optimizations for scalable CFD applications on hybrid CPU+MIC heterogeneous computing system with millions of cores

Yong-Xian Wang, Li-Lun Zhang, Wei Liu, Xing-Hua Cheng, Yu Zhuang, Anthony T. Chronopoulos
2018 Computers & Fluids  
of applications, balancing the work load among all kinds of computing devices, tuning the multi-thread code toward better performance in intra-machine node with hundreds of CPU/MIC cores, and optimizing  ...  The tuned solver successfully scales up to half of the entire Tianhe-2 supercomputer system with over 1.376 million of heterogeneous cores.  ...  This work was funded by the National Natural Science Foundation of China (NSFC) under grant no. 61379056.  ... 
doi:10.1016/j.compfluid.2018.03.005 fatcat:b7yhhua6tzel5fwphn52ufendy

A parallel-object programming model for petaflops machines and blue gene/cyclops

Gengbin Zheng, A. Kumar, S. Joshua, M. Unger, L.V. Kale
2002 Proceedings 16th International Parallel and Distributed Processing Symposium  
Such a machine might consist of a million processors, and is characterized by a low memory-to-processor ratio.  ...  of processors.  ...  Marc Snir (now at Univ. of Illinois) for useful discussions earlier during the implementation of the emulator.  ... 
doi:10.1109/ipdps.2002.1016577 dblp:conf/ipps/ZhengSUK02 fatcat:dpr6b37uq5hsjdgotoouotkhqq

Page 27 of American Sportswear & Knitting Times Vol. 47, Issue 30 [page]

1978 American Sportswear & Knitting Times  
Last semester TOTE served 107 students in five textile plants and one community college. One of the main advantages of the TOTE system is the tremendous flexibility it provides students.  ...  Participants study the same material offered in the School of Textiles curriculum and earn credit toward a degree on just increase professional proficiency.  ... 

The Performance Implication of Task Size for Applications on the HPX Runtime System

Patricia Grubel, Hartmut Kaiser, Jeanine Cook, Adrian Serio
2015 2015 IEEE International Conference on Cluster Computing  
As High Performance Computing moves toward Exascale, where parallel applications will be expected to run on millions of cores concurrently, every component of the computational model must perform optimally  ...  This is the first step toward the goal of dynamically adapting task size to optimize parallel performance.  ...  We thank Bryce Adelstein-Lelbach for his work on the HPX thread scheduler and the addition of counters that made this study possible.  ... 
doi:10.1109/cluster.2015.119 dblp:conf/cluster/GrubelKCS15 fatcat:vjxornmsvvdengb36gfcvh4tri

On the Problem of Minimizing Workload Execution Time in SMT Processors

Francisco J. Cazorla, Enrique Fernandez, Peter M.W. Knijnenburg, Alex Ramirez, Rizos Sakellariou, Mateo Valero
2007 2007 International Conference on Embedded Computer Systems: Architectures, Modeling and Simulation  
It consists of reducing the total execution time of all threads in a workload. This problem arises in parallel applications, where it is common for a single master thread to spawn several child jobs.  ...  We show that, on average, for the workloads evaluated in this paper, there is space for improvement of up to 18 percentage points.  ...  ACKNOWLEDGMENTS This work has been supported by the Ministry of Science and Technology of Spain under contracts TIN-2004-07739-C02-01, the HiPEAC European Network of Excellence, and an IBM fellowship.  ... 
doi:10.1109/icsamos.2007.4285735 dblp:conf/samos/CazorlaFKRSV07 fatcat:bqzynqs6bzfdxnnabayuwphyo4

From everyday conversation to political action: Talking austerity in online 'third spaces'

Todd Graham, Daniel Jackson, Scott Wright
2015 European Journal of Communication  
The findings demonstrate that while such third spaces remain concerned with the preoccupations of everyday life, they can and do perform a role of mobilizing agent towards political participation.  ...  Taking forward a new agenda for online political deliberationthe study of everyday political talk in non-political, online 'third spaces'this article examines the dynamics of political talk across three  ...  Given the anonymous nature of the forums, access to the demographic details of participants was not available (e.g. male/female, age).  ... 
doi:10.1177/0267323115595529 fatcat:ezmdz3kc2fdhvnwd6jc4e475wq

Page 38 of American Ceramic Society Bulletin Vol. 73, Issue 4 [page]

1994 American Ceramic Society Bulletin  
Community eventual- ly will take place.  ...  Furthermore, the project has helped some of these com- panies take certain initiatives toward manufacturing and marketing advanced structural ceramic parts.  ... 

Parallel Community Detection for Massive Graphs [chapter]

E. Jason Riedy, Henning Meyerhenke, David Ediger, David A. Bader
2012 Lecture Notes in Computer Science  
We extend our work on analyzing such massive graph data with a massively parallel algorithm for community detection that scales to current data sizes, clustering a real-world graph of over 100 million  ...  Community detection partitions a graph into subgraphs more densely connected within the subgraph than to the rest of the graph.  ...  We also thank reviews of previous work inside Oracle and anonymous reviewers of this work.  ... 
doi:10.1007/978-3-642-31464-3_29 fatcat:hhsibbfvgzgk3da5aqnjkz4bke

Interfaces as rhetorical constructions

Liza Potts, Angela Harrison
2013 Proceedings of the 31st ACM international conference on Design of communication - SIGDOC '13  
In this paper, we describe the rhetorical construction of two community sites and analyze how these sites support the information sharing practices of these communities.  ...  When community members embrace or reject these uses, it is as much a reaction to the content as it is to the cultural misuse of the community.  ...  Overview Reddit is a website where the delivery format, memory devices, arrangement of discussion threads and categorization, and content style all work towards building a distinct culture of sharing information  ... 
doi:10.1145/2507065.2507079 dblp:conf/sigdoc/PottsH13 fatcat:7sstfdzw35d5voh5xhoihiifhy

Large-scale multi-dimensional document clustering on GPU clusters

Yongpeng Zhang, Frank Mueller, Xiaohui Cui, Thomas Potok
2010 2010 IEEE International Symposium on Parallel & Distributed Processing (IPDPS)  
Our framework scales up to over one million documents processed simultaneously in a sixteen-node moderate GPU cluster. Results are also compared to a four-node cluster with higher-end GPUs.  ...  of flocking-based document clustering.  ...  between two boids i and x. • Alignment: steer towards the average heading of local flock mates f ali = N i v i N − v x (3) • Cohesion: steer to move toward the average position of local flock mates f  ... 
doi:10.1109/ipdps.2010.5470429 dblp:conf/ipps/ZhangMCP10 fatcat:i43znbjewfaxzbb73lxwjh6kpi

A holistic architecture for super real-time multiagent simulation platforms

Toyotaro Suzumura, Hiroki Kanezashi
2013 2013 Winter Simulations Conference (WSC)  
With our prototype system, the first experiment tested the performance scalability when simulating millions of agents on 1,536 CPU cores over 256 nodes.  ...  We then tested a national network spanning Japan, which was able to simulate a 100 million agents and at near-real time while using 128 nodes.  ...  The project is also partly supported by the JST CREST "Development of System Software Technologies for post-Peta Scale High Performance Computing".  ... 
doi:10.1109/wsc.2013.6721543 dblp:conf/wsc/SuzumuraK13 fatcat:4rbltyxp55cr7oslgcsl2j3vmi
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