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Fission: A Provably Fast, Scalable, and Secure Permissionless Blockchain [article]

Ke Liang
2018 arXiv   pre-print
By re-innovating all the core elements of the blockchain technology - computation, networking, and storage - in a holistic manner, Fission aims to achieve the best balance among scalability, security and  ...  Fission applies a hybrid network which consists of a relay network, and a peer-to-peer network.  ...  Both N e max and δ are pre-determined in Fission, and they can be adjusted for the best practice.  ... 
arXiv:1812.05032v2 fatcat:d5fmz7a55je5rdqz2qztwg2nwa

Parallel Fission Bank Algorithms in Monte Carlo Criticality Calculations

Paul K. Romano, Benoit Forget
2012 Nuclear science and engineering  
In this work, we describe a new method for parallelizing the source iterations in a Monte Carlo criticality calculation.  ...  The algorithm was implemented in a simple Monte Carlo code and shown to scale up to hundreds of processors and furthermore outperforms traditional algorithms by at least two orders of magnitude in wall-clock  ...  A separate simulation using each of the algorithms was run from a single compute node up to 88 compute nodes in parallel.  ... 
doi:10.13182/nse10-98 fatcat:xijstclqbff2nhfh7dnrwnjxhu

Fission Dynamics of 240Pu from Saddle-to-Scission and Beyond [article]

Aurel Bulgac, Shi Jin, Kenneth Roche, Nicolas Schunck, Ionel Stetcu
2019 arXiv   pre-print
Calculations are presented for the time evolution of ^240Pu from the proximity of the outer saddle point until the fission fragments are well separated, using the time-dependent density functional theory  ...  An unexpected finding is varying the pairing strength within a quite large range has only minor effects on the dynamics.  ...  Bertsch for numerous discussions and helpful comments on the manuscript and to P. Magierski for a number of suggestions to improve the narrative. We thank I. Abdurrahman for helping preparing Fig.  ... 
arXiv:1806.00694v2 fatcat:uoefriixozbptflz3zkr54l724

Microscopic theory of nuclear fission: a review

N Schunck, L M Robledo
2016 Reports on progress in physics (Print)  
A trademark of the microscopic theory of fission is the tremendous amount of computing needed for practical applications.  ...  In practice, this hypothesis of adiabaticity is implemented by introducing (a few) collective variables and mapping out the many-body Schr\"odinger equation into a collective Schr\"odinger-like equation  ...  Computational resources were provided through an INCITE award "Computational Nuclear Structure" by the National Center for Computational Sciences (NCCS) and National Institute for Computational Sciences  ... 
doi:10.1088/0034-4885/79/11/116301 pmid:27727148 fatcat:tvwibdy6xfhhlocqdqr4wsw66a

Predicting the Fission Yeast Protein Interaction Network

Vera Pancaldi, Ömer S. Saraç, Charalampos Rallis, Janel R. McLean, Martin Převorovský, Kathleen Gould, Andreas Beyer, Jürg Bähler
2012 G3: Genes, Genomes, Genetics  
Fission yeast (Schizosaccharomyces pombe) is a valuable model organism for which no systematic protein-interaction data are available.  ...  Even though any predicted interactome is imperfect, the protein network presented here can provide a valuable basis to explore biological processes and to guide wet-lab experiments in fission yeast and  ...  , and Sanjay Khadayate and Fengyuan Hu for help with setting up the web interface.  ... 
doi:10.1534/g3.111.001560 pmid:22540037 pmcid:PMC3337474 fatcat:jacqnhdtzfeoxfxoeywdinco5a

Selective element fission approach for fast FEM simulation of incremental sheet forming based on dual-mesh system

M. H. Zhang, B. Lu, J. Chen, H. Long, H. Ou
2014 The International Journal of Advanced Manufacturing Technology  
The introduction of a background mesh for simulation data storage and a separate simulation mesh with varied mesh density for simulation ensures both the efficiency of computation and accuracy of results  ...  Focusing on this problem, this paper presents a new selective element fission (SEF) approach for simulation of ISF process based on LS-DYNA.  ...  Because of this, a proper segment length plays a key role in balancing the computation efficiency and simulation accuracy.  ... 
doi:10.1007/s00170-014-6723-5 fatcat:vq7rpfszhbftbfxiw2goglvcbi

Multiscale modelling for fusion and fission materials: the M4F project

L. Malerba, M.J. Caturla, E. Gaganidze, C. Kaden, M.J. Konstantinović, P. Olsson, C. Robertson, D. Rodney, A.M. Ruiz-Moreno, M. Serrano, J. Aktaa, N. Anento (+62 others)
2021 Nuclear Materials and Energy  
This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version  ...  From the computational point of view, one of the problems was the difficulty of parallelising these algorithms in order to increase simulated volumes and times [93] [94] [95] .  ...  For this, the primary knock-on atom (PKA) spectra were first calculated for different fission and fusion neutron facilities.  ... 
doi:10.1016/j.nme.2021.101051 fatcat:d3nwcbaeqjfmnoqzfnrpxhewrq

Automated GPU Kernel Transformations in Large-Scale Production Stencil Applications

Mohamed Wahib, Naoya Maruyama
2015 Proceedings of the 24th International Symposium on High-Performance Parallel and Distributed Computing - HPDC '15  
, searching for optimal kernel fissions/fusions, and generation of optimized code.  ...  We demonstrate the practicality and effectiveness of automatic transformations in exploiting exposed data localities using a variety of real-world applications with large codebases that contain dozens  ...  Acknowledgments This project was partially supported by JST, CREST through its research program: "Highly Productive, High Performance Application Frameworks for Post Petascale Computing."  ... 
doi:10.1145/2749246.2749255 dblp:conf/hpdc/WahibM15 fatcat:ek2v4yc2dnhkzj2bnqgftwjepm

Recent Advances in Graph Partitioning [chapter]

Aydın Buluç, Henning Meyerhenke, Ilya Safro, Peter Sanders, Christian Schulz
2016 Lecture Notes in Computer Science  
We survey recent trends in practical algorithms for balanced graph partitioning together with applications and future research directions.  ...  Acknowledgements We express our gratitude to Bruce Hendrickson, Dominique LaSalle, and George Karypis for many valuable comments on a preliminary draft of the manuscript.  ...  Flows The well-known max-ow min-cut theorem [FF56] can be used to separate two node sets in a graph by computing a maximum ow and hence a minimum cut between them.  ... 
doi:10.1007/978-3-319-49487-6_4 fatcat:4zamxcmgvfbaxndjgxv6jog6km

Recent Advances in Graph Partitioning [article]

Aydin Buluc, Henning Meyerhenke, Ilya Safro, Peter Sanders, Christian Schulz
2015 arXiv   pre-print
We survey recent trends in practical algorithms for balanced graph partitioning together with applications and future research directions.  ...  Acknowledgements We express our gratitude to Bruce Hendrickson, Dominique LaSalle, and George Karypis for many valuable comments on a preliminary draft of the manuscript.  ...  Flows The well-known max-flow min-cut theorem [FF56] can be used to separate two node sets in a graph by computing a maximum flow and hence a minimum cut between them.  ... 
arXiv:1311.3144v3 fatcat:zmvhlkh7ynbzvm353fv22f2gnq

An Efficient Scheme for Coupling OpenMC and FLUENT with Adaptive Load Balancing

Qingyang Zhang, Tianji Peng, Guangchun Zhang, Jie Liu, Xiaowei Guo, Chunye Gong, Bo Yang, Xukai Fan, Guglielmo Lomonaco
2021 Science and Technology of Nuclear Installations  
In addition, the adaptive load-balancing algorithms are especially effective when a case demands different computational power of OpenMC and FLUENT.  ...  algorithm when the number of nodes is large.  ...  With this algorithm, the total number of compute nodes (N total ) and the minimum number of nodes used for MC code (N mc ) and CFD code (N cfd ) should be set before running the coupled program. en, MC-FLUENT  ... 
doi:10.1155/2021/5549602 fatcat:oqsqr66alzajfiflx5eyjnyphm

Tutorial

Scott Schneider, Martin Hirzel, Buğra Gedik
2013 Proceedings of the 7th ACM international conference on Distributed event-based systems - DEBS '13  
After this survey, the tutorial continues with a deep-dive into the fission optimization, which automatically transforms streaming applications for data-parallelism.  ...  This tutorial starts with a survey of optimizations for streaming applications.  ...  The optimization catalog is currently under submission for a journal article.  ... 
doi:10.1145/2488222.2488268 dblp:conf/debs/SchneiderHG13 fatcat:bedwzw6gfzgt5aevtdc5covo6e

Exploiting coarse-grained task, data, and pipeline parallelism in stream programs

Michael I. Gordon, William Thies, Saman Amarasinghe
2006 SIGARCH Computer Architecture News  
As multicore architectures enter the mainstream, there is a pressing demand for high-level programming models that can effectively map to them.  ...  Our compiler, which maps from the StreamIt language to the 16-core Raw architecture, attains a 11.2x mean speedup over a single-core baseline, and a 1.84x speedup over our previous work.  ...  We are very grateful to Michael Taylor, Jonathan Eastep, and Samuel Larsen for their help with the Raw infrastructure, and to Ronny Krashinsky for his comments on this paper.  ... 
doi:10.1145/1168919.1168877 fatcat:ha2w3gf64vg3bfhmsbu4y64zdi

Exploiting coarse-grained task, data, and pipeline parallelism in stream programs

Michael I. Gordon, William Thies, Saman Amarasinghe
2006 Proceedings of the 12th international conference on Architectural support for programming languages and operating systems - ASPLOS-XII  
As multicore architectures enter the mainstream, there is a pressing demand for high-level programming models that can effectively map to them.  ...  Our compiler, which maps from the StreamIt language to the 16-core Raw architecture, attains a 11.2x mean speedup over a single-core baseline, and a 1.84x speedup over our previous work.  ...  We are very grateful to Michael Taylor, Jonathan Eastep, and Samuel Larsen for their help with the Raw infrastructure, and to Ronny Krashinsky for his comments on this paper.  ... 
doi:10.1145/1168857.1168877 dblp:conf/asplos/GordonTA06 fatcat:z6oxfi2pizamdircj2pkckqn7m

Exploiting coarse-grained task, data, and pipeline parallelism in stream programs

Michael I. Gordon, William Thies, Saman Amarasinghe
2006 ACM SIGOPS Operating Systems Review  
As multicore architectures enter the mainstream, there is a pressing demand for high-level programming models that can effectively map to them.  ...  Our compiler, which maps from the StreamIt language to the 16-core Raw architecture, attains a 11.2x mean speedup over a single-core baseline, and a 1.84x speedup over our previous work.  ...  We are very grateful to Michael Taylor, Jonathan Eastep, and Samuel Larsen for their help with the Raw infrastructure, and to Ronny Krashinsky for his comments on this paper.  ... 
doi:10.1145/1168917.1168877 fatcat:lio4fpc6xndzrgmlm2jwz653qm
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