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Quickstep

Jignesh M. Patel, Harshad Deshmukh, Jianqiao Zhu, Navneet Potti, Zuyu Zhang, Marc Spehlmann, Hakan Memisoglu, Saket Saurabh
2018 Proceedings of the VLDB Endowment  
Quickstep builds on a vast body of previous methods for organizing data, optimizing, scheduling and executing queries, and brings them together in a single system.  ...  Quickstep also includes new query processing methods that go beyond previous approaches.  ...  This paper has presented the design and implementation of Quickstep that emphasizes a scaling-up approach.  ... 
doi:10.14778/3199517.3199518 fatcat:nvoq6i4knbg7xcjck7kc7iha5e

CP2K: An Electronic Structure and Molecular Dynamics Software Package – Quickstep: Efficient and Accurate Electronic Structure Calculations [article]

Thomas D. Kühne, Marcella Iannuzzi, Mauro Del Ben, Vladimir V. Rybkin, Patrick Seewald, Frederick Stein, Teodoro Laino, Rustam Z. Khaliullin, Ole Schütt, Florian Schiffmann, Dorothea Golze, Jan Wilhelm, Sergey Chulkov (+22 others)
2020 arXiv   pre-print
The emphasis is put on density functional theory and multiple post-Hartree-Fock methods using the Gaussian and plane wave approach and its augmented all-electron extension.  ...  It is especially aimed at massively-parallel and linear-scaling electronic structure methods and state-of-the-art ab-initio molecular dynamics simulations.  ...  DIAGONALIZATION-BASED AND LOW-SCALING EIGENSOLVER After the initial Hamiltonian matrix for the selected method has been built by CP2K, like the KS matrix K in case of a DFT-based method using the Quickstep  ... 
arXiv:2003.03868v2 fatcat:3urkeyyzivbzzkindmpatbmt4y

CP2K: An electronic structure and molecular dynamics software package - Quickstep: Efficient and accurate electronic structure calculations

Thomas D. Kühne, Marcella Iannuzzi, Mauro Del Ben, Vladimir V. Rybkin, Patrick Seewald, Frederick Stein, Teodoro Laino, Rustam Z. Khaliullin, Ole Schütt, Florian Schiffmann, Dorothea Golze, Jan Wilhelm (+27 others)
2020 Journal of Chemical Physics  
The emphasis is put on density functional theory and multiple post-Hartree-Fock methods using the Gaussian and plane wave approach and its augmented all-electron extension.  ...  It is especially aimed at massively parallel and linear-scaling electronic structure methods and state-of-the-art ab initio molecular dynamics simulations.  ...  CP2K, the linear-scaling calculation of the sign-function is implemented up to seventh-order based on Padé-approximants.  ... 
doi:10.1063/5.0007045 pmid:33687235 fatcat:a5o4bngmcrcslmfj3dcsr5blxi

Ontological user profiling in recommender systems

Stuart E. Middleton, Nigel R. Shadbolt, David C. De Roure
2004 ACM Transactions on Information Systems  
________________________________________________________________________ We explore a novel ontological approach to user profiling within recommender systems, working on the problem of recommending on-line  ...  Two small-scale experiments, with 24 subjects over 3 months, and a large-scale experiment, with 260 subjects over an academic year, are conducted to evaluate different aspects of our approach.  ...  The system ran on a Solaris platform and was mostly written in Java.  ... 
doi:10.1145/963770.963773 fatcat:7qma4c2v2vfznl62c66lvefxam

Main-memory database systems

Alfons Kemper, Thomas Neumann
2014 2014 IEEE 30th International Conference on Data Engineering  
Building on their experience a large number of projects started, among them Hyrise, Exasol, Quickstep and C-Store/Vertica.  ...  Recently, industry opinion leaders like SAP's Hasso Plattner have re-advocated the "one size fits all" strategy that demands to execute OLTP and OLAP within the same system on the same database state.  ...  on single machine scale-up (brawny nodes), pursue a scale-out approach on smaller (wimpy) nodes, or even focus on heterogeneous clusters of brawny and wimpy nodes?  ... 
doi:10.1109/icde.2014.6816768 dblp:conf/icde/Kemper014 fatcat:hjx6djcdenaxtd63xqzi3g666i

A taxonomy of architectures for synchronous groupware applications

John F. Patterson
1995 ACM SIGOIS Bulletin  
As demonstrated by our own groupware platforms DreamTeam and QuickStep, a certain architecture may be a suitable for one scenario, but may have many disadvantages in another scenario.  ...  We used this taxonomy to classify some groupware platforms. A list of criteria at the end of this paper demonstrates the influence of specific architectures on groupware usage.  ...  QuickStep [RU00b] (figure 1b) on the other hand is a platform specially designed for groupware applications running on handheld devices.  ... 
doi:10.1145/201947.201969 fatcat:tlncmiy4fndvrlgbhdo5hal76y

Enabling real-time physics simulation in future interactive entertainment

Thomas Y. Yeh, Petros Faloutsos, Glenn Reinman
2006 Proceedings of the 2006 ACM SIGGRAPH symposium on Videogames - Sandbox '06  
With this suite, we then explore techniques to help meet these demands, including parallel execution, a fast estimation approach that self-regulates error, and a value prediction technique that is allowed  ...  Future entertainment applications will feature robust physics modeling to enable on-the-fly content creation.  ...  Acknowledgments The work in this paper was supported by NSF CAREER grant No. CCR-0133997 and NSF grant No. CCF-0429983.  ... 
doi:10.1145/1183316.1183326 dblp:conf/siggraph/YehFR06 fatcat:ty3irqr43fgwrl2vxxwr3aq7i4

Design and evaluation of storage organizations for read-optimized main memory databases

Craig Chasseur, Jignesh M. Patel
2013 Proceedings of the VLDB Endowment  
Finally, compression can also play a role in accelerating query performance depending on data distribution and query selectivity.  ...  The focus of this paper is on systematically evaluating a number of these key storage design choices for main memory analytical (i.e. read-optimized) database settings.  ...  We do, however, conduct some scale-up experiments that use all four CPU sockets.  ... 
doi:10.14778/2536258.2536260 fatcat:ev4x6bzgrbd3hf33laggkxx4hi

HELIX-UP: Relaxing program semantics to unleash parallelization

Simone Campanoni, Glenn Holloway, Gu-Yeon Wei, David Brooks
2015 2015 IEEE/ACM International Symposium on Code Generation and Optimization (CGO)  
In addition to boosting performance, our approach limits the sensitivity of parallelized code to the parameters of target CPUs (such as core-to-core communication latency) and the accuracy of data dependence  ...  To convert latent parallelism into performance gains, users may be willing to compromise on the quality of a program's results.  ...  On each of the three platforms, the cache coherence protocol is the only mechanism for synchronizing the cores of a single die and for sharing data. HELIX-UP Tuners.  ... 
doi:10.1109/cgo.2015.7054203 dblp:conf/cgo/CampanoniHWB15 fatcat:ralljncn25a43fd7ewmbj3v47m

To pipeline or not to pipeline, that is the question [article]

Harshad Deshmukh, Bruhathi Sundarmurthy, Jignesh M. Patel
2020 arXiv   pre-print
We show that there isn't a clear definition of pipelining and blocking, and that there is a full spectrum of techniques based on a simple concept called unit-of-transfer.  ...  In designing query processing primitives, a crucial design choice is the method for data transfer between two operators in a query plan.  ...  We also note that the dominant operator for many of these queries is a "leaf" operator (e.g. selection on a base table, building a hash table on a base table, aggregation on a base table) .  ... 
arXiv:2002.00866v1 fatcat:pdgtzafxh5e55i4ospowia36ea

Bottom-up Broadcast Neural Network For Music Genre Classification [article]

Caifeng Liu, Lin Feng, Guochao Liu, Huibing Wang, Shenglan Liu
2019 arXiv   pre-print
Music genre recognition based on visual representation has been successfully explored over the last years.  ...  Faced with the challenge of this issue, we fully exploit the low-level information from spectrograms of audios and develop a novel CNN architecture in this paper.  ...  Deep learning approaches usually rely on a large amount of data to train model.  ... 
arXiv:1901.08928v1 fatcat:5eqfym47hjec7mshpccvjzyswy

CP2K: An electronic structure and molecular dynamics software package - Quickstep: Efficient and accurate electronic structure calculations

Thomas D Kühne, Marcella Iannuzzi, Mauro Del Ben, Vladimir V Rybkin, Patrick Seewald, Frederick Stein, Teodoro Laino, Rustam Z Khaliullin, Ole Schütt, Florian Schiffmann, Dorothea Golze, Jan Wilhelm (+18 others)
2020
The emphasis is put on density functional theory and multiple post-Hartree-Fock methods usingthe Gaussian and plane wave approach and its augmented all-electron extension.  ...  It is especially aimed at massively parallel and linear-scaling electronic structure methods and state-of-the-artab initiomolecular dynamics simulations.  ...  CP2K, the linear-scaling calculation of the sign-function is implemented up to seventh-order based on Padé-approximants.  ... 
doi:10.5167/uzh-192979 fatcat:whml3d55jzh25nl5kwjcqolgme

Scaling-up in-memory datalog processing

Zhiwei Fan, Jianqiao Zhu, Zuyu Zhang, Aws Albarghouthi, Paraschos Koutris, Jignesh M. Patel
2019 Proceedings of the VLDB Endowment  
Due to the large volumes of data being processed, several research efforts across multiple communities have explored how to scale up recursive queries, typically expressed in Datalog.  ...  ., a tool designed for large-scale graph analytics does not exhibit the same performance on program-analysis tasks, and vice versa.  ...  We also thank CloudLab (https://www.cloudlab.us, NSF grant CNS-1419199) for providing part of the computational infrastructure that was used for this work.  ... 
doi:10.14778/3311880.3311886 fatcat:qrk6aczue5ffjlprbs62ydawsa

Development of a Triglide-Robot with Enlarged Workspace

C. Budde, P. Last, J. Hesselbach
2007 Engineering of Complex Computer Systems (ICECCS), Proceedings of the IEEE International Conference on  
Despite of a promising potential robots based on parallel kinematic structures have not yet found their way into industry on a large scale.  ...  Using a workspace enlargement approach based on the use of several workspaces going along with different assembly modes of the structure's the workspace to installationspace ratio of this robot can be  ...  WORKSPACE ENLARGEMENT The named approach to enlarge the workspace is based on the idea to use several workspaces.  ... 
doi:10.1109/robot.2007.363043 dblp:conf/icra/BuddeLH07 fatcat:cfxpkjsmpzfttcir6pzdj5dlym

Scaling-Up In-Memory Datalog Processing: Observations and Techniques [article]

Zhiwei Fan, Jianqiao Zhu, Zuyu Zhang, Aws Albarghouthi, Paraschos Koutris, Jignesh Patel
2018 arXiv   pre-print
techniques based on the analysis of our observations.  ...  Due to the large volumes of data being processed, several research efforts, across multiple communities, have explored how to scale up recursive queries, typically expressed in Datalog.  ...  Recall that 20 is the total number of physical cores. Scaling-up Data.  ... 
arXiv:1812.03975v1 fatcat:4hlwmlcbofaejdxlkgfnkcuaym
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