Some experiences for porting application to Intel Xeon PhiMaho Nakata
The document discusses experiences porting applications to Intel Xeon Phi. It provides tips for compiling applications with Intel Composer XE 2013 using the -mmic flag. While some applications like DGEMM require tuning to achieve peak performance, others like Gaussian09 and Povray require patches and multi-step configurations to build for Xeon Phi. There is also an effort underway to port the pkgsrc packaging system to help bring more software packages to the Xeon Phi.
PubChem QC project. In this project we calculate all molecules in the PubChem Project. Currently 1,100,000 molecules are available at http://pubchemqc.riken.jp/ . Results are in public domain.
The document discusses the application of the Bravyi-Kitaev transformation to quantum chemistry calculations on a quantum computer. It notes that while quantum computers could perform quantum chemistry simulations much faster than classical computers, actually implementing the calculations requires many unitary circuits. The Bravyi-Kitaev transformation reduces the number of circuits needed by encoding qubits in a different way, making the calculations more efficient for a real quantum computer.
Use C++ and Intel® Threading Building Blocks (Intel® TBB) for Hardware Progra...Intel® Software
In this presentation, we focus on an alternative approach that uses nodes that contain Intel® Xeon® processors and Intel® Xeon Phi™ coprocessors. Programming models and the development tools are identical for these resources, greatly simplifying development. We discuss how the same models for vectorization and threading can be used across these compute resources to create software that performs well on them. We further propose an extension to the Intel® Threading Building Blocks (Intel® TBB) flow graph interface that enables intra-node distributed memory programming, simplifying communication, and load balancing between the processors and coprocessors. Finally, we validate this approach by presenting a benchmark of a risk analysis implementation that achieves record-setting performance.
This document provides an overview and installation instructions for machine learning basics using various tools and libraries. It discusses installing and setting up Orange, KNIME, Anaconda, and related Python libraries. Key steps include downloading installers, setting paths, defining workspaces, installing extensions, and creating workflows in Orange and KNIME. Popular cheminformatics and deep learning libraries supported include RDKit, DeepChem, numpy, and scikit-learn.
Some experiences for porting application to Intel Xeon PhiMaho Nakata
The document discusses experiences porting applications to Intel Xeon Phi. It provides tips for compiling applications with Intel Composer XE 2013 using the -mmic flag. While some applications like DGEMM require tuning to achieve peak performance, others like Gaussian09 and Povray require patches and multi-step configurations to build for Xeon Phi. There is also an effort underway to port the pkgsrc packaging system to help bring more software packages to the Xeon Phi.
PubChem QC project. In this project we calculate all molecules in the PubChem Project. Currently 1,100,000 molecules are available at http://pubchemqc.riken.jp/ . Results are in public domain.
The document discusses the application of the Bravyi-Kitaev transformation to quantum chemistry calculations on a quantum computer. It notes that while quantum computers could perform quantum chemistry simulations much faster than classical computers, actually implementing the calculations requires many unitary circuits. The Bravyi-Kitaev transformation reduces the number of circuits needed by encoding qubits in a different way, making the calculations more efficient for a real quantum computer.
Use C++ and Intel® Threading Building Blocks (Intel® TBB) for Hardware Progra...Intel® Software
In this presentation, we focus on an alternative approach that uses nodes that contain Intel® Xeon® processors and Intel® Xeon Phi™ coprocessors. Programming models and the development tools are identical for these resources, greatly simplifying development. We discuss how the same models for vectorization and threading can be used across these compute resources to create software that performs well on them. We further propose an extension to the Intel® Threading Building Blocks (Intel® TBB) flow graph interface that enables intra-node distributed memory programming, simplifying communication, and load balancing between the processors and coprocessors. Finally, we validate this approach by presenting a benchmark of a risk analysis implementation that achieves record-setting performance.
This document provides an overview and installation instructions for machine learning basics using various tools and libraries. It discusses installing and setting up Orange, KNIME, Anaconda, and related Python libraries. Key steps include downloading installers, setting paths, defining workspaces, installing extensions, and creating workflows in Orange and KNIME. Popular cheminformatics and deep learning libraries supported include RDKit, DeepChem, numpy, and scikit-learn.
Profiling PyTorch for Efficiency & Sustainabilitygeetachauhan
From my talk at the Data & AI summit - latest update on the PyTorch Profiler and how you can use it for optimizations for efficiency. Talk also dives into the future and what we need to do together as an industry to move towards Sustainable AI
Design and implementation of Parallel Prefix Adders using FPGAsIOSR Journals
Abstract: Adders are known to have the frequently used in VLSI designs. In digital design we have half adder and full adder, main adders by using these adders we can implement ripple carry adders. RCA use to perform any number of addition. In this RCA is serial adder and it has commutation delay problem. If increase the ha&fa simultaneously delay also increase. That’s why we go for parallel adders(parallel prefix adders). IN the parallel prefix adder are ks adder(kogge-stone),sks adder(sparse kogge-stone),spaning tree and brentkung adder. These adders are designd and implemented on FPGA sparton3E kit. Simulated and synthesis by model sim6.4b, Xilinx ise10.1.
An evaluation of LLVM compiler for SVE with fairly complicated loopsLinaro
The document evaluates ARM and Intel compilers in vectorizing loops from a particle-in-cell simulation code. While Intel can vectorize all loops, ARM can only vectorize one. Investigation found ARM spilled too many loop-invariant variables to memory in two complex loops, preventing vectorization. Minor improvements to ARM's scalar loops were identified that could provide a good base for vectorization. With obstacles removed and reasonable modifications, ARM's code could surpass Intel's performance.
The document summarizes available HPC resources at CSUC, including hardware facilities, the working environment, development tools, and how to access services. The main systems are Canigó with 384 cores and 33 TFlops peak performance, and Pirineus II with 2,688 cores and 284 TFlops. Resources are managed by Slurm and available partitions include standard, GPU, and Intel KNL nodes. Users can access resources through RES projects or by purchasing compute units.
This is the final report for my project as a Technical Student at CERN.
The Intel Xeon/Phi platform is a powerful x86 multi-core engine with a very high-speed memory interface. In its next version it will be able to operate as a stand-alone system with a very high-speed interconnect. This makes it a very interesting candidate for (near) real-time applications such as event-building, event-sorting and event preparation for subsequent processing by high level trigger software algorithms.
This lecture covers the principles and the architectures of modern cluster schedulers, including Apache Mesos, Apache Yarn, Google Borg and K8s, and some notes on Omega
Improving Efficiency of Machine Learning Algorithms using HPCC SystemsHPCC Systems
1) The document discusses improving the efficiency of machine learning algorithms using the HPCC Systems platform through parallelization.
2) It describes the HPCC Systems architecture and its advantages for distributed machine learning.
3) A parallel DBSCAN algorithm is implemented on the HPCC platform which shows improved performance over the serial algorithm, with execution times decreasing as more nodes are used.
Parallel External Memory Algorithms Applied to Generalized Linear ModelsRevolution Analytics
This document discusses parallel external memory algorithms (PEMAs) and their application to generalized linear models (GLMs). PEMAs allow external memory algorithms to be parallelized and run on multiple cores and computers. The document describes arranging GLM code into four functions - Initialize, ProcessData, UpdateResults, and ProcessResults - to create a PEMA. It also discusses an implementation of GLM using this approach in C++ and R that can efficiently use multiple cores and nodes for extremely high performance on large datasets. Benchmark results demonstrate linear scaling of this implementation with large numbers of rows and nodes.
Deep learning for molecules, introduction to chainer chemistryKenta Oono
1) The document introduces machine learning and deep learning techniques for predicting chemical properties, including rule-based approaches versus learning-based approaches using neural message passing algorithms.
2) It discusses several graph neural network models like NFP, GGNN, WeaveNet and SchNet that can be applied to molecular graphs to predict characteristics. These models update atom representations through message passing and graph convolution operations.
3) Chainer Chemistry is introduced as a deep learning framework that can be used with these graph neural network models for chemical property prediction tasks. Examples of tasks include drug discovery and molecular generation.
The document summarizes Kazuaki Ishizaki's talk on making hardware accelerators easier to use. Some key points:
- Programs are becoming simpler while hardware is becoming more complicated, with commodity processors including hardware accelerators like GPUs.
- The speaker's recent work focuses on generating hardware accelerator code from high-level programs without needing specific hardware knowledge.
- An approach using a Java JIT compiler was presented that can generate optimized GPU code from parallel Java streams, requiring programmers to only express parallelism.
- The JIT compiler performs optimizations like aligning arrays, using read-only caches, reducing data transfer, and eliminating exception checks.
- Benchmarks show the generated GPU
By Tobias Grosser, Scalable Parallel Computing Laboratory
The COSMO climate and weather model delivers daily forecasts for Switzerland and many other nations. As a traditional HPC application it was developed with SIMD-CPUs in mind and large manual efforts were required to enable the 2016 move to GPU acceleration. As today's high-performance computer systems increasingly rely on accelerators to reach peak performance and manual translation to accelerators is both costly and difficult to maintain, we propose a fully automatic accelerator compiler for the automatic translation of scientific Fortran codes to CUDA GPU accelerated systems. Several challenges had to be overcome to make this reality: 1) improved scalability, 2) automatic data placement using unified memory, 3) loop rescheduling to expose coarse-grained parallelism, 4) inter-procedural loop optimization, and 5) plenty of performance tuning. Our evaluation shows that end-to-end automatic accelerator compilation is possible for non-trivial portions of the COSMO climate model, despite the lack of complete static information. Non-trivial loop optimizations previously implemented manually are performed fully automatically and memory management happens fully transparently using unified memory. Our preliminary results show notable performance improvements over sequential CPU code (40s to 8s reduction in execution time) and we are currently working on closing the remaining gap to hand-tuned GPU code. This talk is a status update on our most recent efforts and also intended to gather feedback on future research plans towards automatically mapping COSMO to FPGAs.
Tobias Grosser Bio
Tobias Grosser is a senior researcher in the Scalable Parallel Computing Laboratory (SPCL) of Torsten Hoefler at the Computer Science Department of ETH Zürich. Supported by a Google PhD Fellowship he received his doctoral degree from Universite Pierre et Marie Curie under the supervision of Albert Cohen. Tobias' research is taking place at the border of low-level compilers and high-level program transformations with the goal of enabling complex - but highly-beneficial - program transformations in a production compiler environment. He develops with the Polly loop optimizer a loop transformation framework which today is a community project supported throught the Polly Labs research laboratory. Tobias also developed advanced tiling schemes for the efficient execution of iterated stencils. Today Tobias leads the heterogeneous compute efforts in the Swiss University funded ComPASC project and is about to start a three year NSF Ambizione project on advancing automatic compilation and heterogenization techniques at ETH Zurich.
Email
bgerofi@riken.jp
For more info on The Linaro High Performance Computing (HPC) visit https://www.linaro.org/sig/hpc/
GTC Japan 2016 Chainer feature introductionKenta Oono
This document introduces Chainer's new trainer and dataset abstraction features which provide a standardized way to implement training loops and access datasets. The key aspects are:
- Trainer handles the overall training loop and allows extensions to customize checkpoints, logging, evaluation etc.
- Updater handles fetching mini-batches and model optimization within each loop.
- Iterators handle accessing datasets and returning mini-batches.
- Extensions can be added to the trainer for tasks like evaluation, visualization, and saving snapshots.
This abstraction makes implementing training easier and more customizable while still allowing manual control when needed. Common iterators, updaters, and extensions are provided to cover most use cases.
HC-4012, Complex Network Clustering Using GPU-based Parallel Non-negative Mat...AMD Developer Central
Presentation HC-4012, Complex Network Clustering Using GPU-based Parallel Non-negative Matrix Factorization, by Huming Zhu at the AMD Developer Summit (APU13) November 11-13, 2013.
In this deck from the Perth HPC Conference, Rob Farber from TechEnablement presents: AI is Impacting HPC Everywhere.
"The convergence of AI and HPC has created a fertile venue that is ripe for imaginative researchers — versed in AI technology — to make a big impact in a variety of scientific fields. From new hardware to new computational approaches, the true impact of deep- and machine learning on HPC is, in a word, “everywhere”. Just as technology changes in the personal computer market brought about a revolution in the design and implementation of the systems and algorithms used in high performance computing (HPC), so are recent technology changes in machine learning bringing about an AI revolution in the HPC community. Expect new HPC analytic techniques including the use of GANs (Generative Adversarial Networks) in physics-based modeling and simulation, as well as reduced precision math libraries such as NLAFET and HiCMA to revolutionize many fields of research. Other benefits of the convergence of AI and HPC include the physical instantiation of data flow architectures in FPGAs and ASICs, plus the development of powerful data analytic services."
Learn more: http://www.techenablement.com/
and
http://hpcadvisorycouncil.com/events/2019/australia-conference/agenda.php
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
A CGRA-based Approachfor Accelerating Convolutional Neural NetworksShinya Takamaeda-Y
The document presents an approach for accelerating convolutional neural networks (CNNs) using a coarse-grained reconfigurable array (CGRA) called EMAX. EMAX features processing elements with local memory to improve data locality and memory bandwidth utilization. CNN computations like convolutions are mapped to EMAX by assigning weight matrices to constant registers and performing numerous small matrix multiplications in parallel. Evaluation shows EMAX achieves better performance per memory bandwidth and area than GPUs for CNN workloads due to its optimization for small matrix operations.
Assisting User’s Transition to Titan’s Accelerated Architectureinside-BigData.com
Oak Ridge National Lab is home of Titan, the largest GPU accelerated supercomputer in the world. This fact alone can be an intimidating experience for users new to leadership computing facilities. Our facility has collected over four years of experience helping users port applications to Titan. This talk will explain common paths and tools to successfully port applications, and expose common difficulties experienced by new users. Lastly, learn how our free and open training program can assist your organization in this transition.
1. The document discusses research activities related to reducing energy consumption by at least 30% through the development of core source technologies for universal operating systems.
2. It describes four papers being presented, including ones on system and device latency modeling, power management frameworks for embedded systems, and automatic selection of power policies for operating systems.
3. It also summarizes four research topics from the National University, including performance evaluation of parallel applications using a power-aware paging method on next-generation memory architectures.
Profiling PyTorch for Efficiency & Sustainabilitygeetachauhan
From my talk at the Data & AI summit - latest update on the PyTorch Profiler and how you can use it for optimizations for efficiency. Talk also dives into the future and what we need to do together as an industry to move towards Sustainable AI
Design and implementation of Parallel Prefix Adders using FPGAsIOSR Journals
Abstract: Adders are known to have the frequently used in VLSI designs. In digital design we have half adder and full adder, main adders by using these adders we can implement ripple carry adders. RCA use to perform any number of addition. In this RCA is serial adder and it has commutation delay problem. If increase the ha&fa simultaneously delay also increase. That’s why we go for parallel adders(parallel prefix adders). IN the parallel prefix adder are ks adder(kogge-stone),sks adder(sparse kogge-stone),spaning tree and brentkung adder. These adders are designd and implemented on FPGA sparton3E kit. Simulated and synthesis by model sim6.4b, Xilinx ise10.1.
An evaluation of LLVM compiler for SVE with fairly complicated loopsLinaro
The document evaluates ARM and Intel compilers in vectorizing loops from a particle-in-cell simulation code. While Intel can vectorize all loops, ARM can only vectorize one. Investigation found ARM spilled too many loop-invariant variables to memory in two complex loops, preventing vectorization. Minor improvements to ARM's scalar loops were identified that could provide a good base for vectorization. With obstacles removed and reasonable modifications, ARM's code could surpass Intel's performance.
The document summarizes available HPC resources at CSUC, including hardware facilities, the working environment, development tools, and how to access services. The main systems are Canigó with 384 cores and 33 TFlops peak performance, and Pirineus II with 2,688 cores and 284 TFlops. Resources are managed by Slurm and available partitions include standard, GPU, and Intel KNL nodes. Users can access resources through RES projects or by purchasing compute units.
This is the final report for my project as a Technical Student at CERN.
The Intel Xeon/Phi platform is a powerful x86 multi-core engine with a very high-speed memory interface. In its next version it will be able to operate as a stand-alone system with a very high-speed interconnect. This makes it a very interesting candidate for (near) real-time applications such as event-building, event-sorting and event preparation for subsequent processing by high level trigger software algorithms.
This lecture covers the principles and the architectures of modern cluster schedulers, including Apache Mesos, Apache Yarn, Google Borg and K8s, and some notes on Omega
Improving Efficiency of Machine Learning Algorithms using HPCC SystemsHPCC Systems
1) The document discusses improving the efficiency of machine learning algorithms using the HPCC Systems platform through parallelization.
2) It describes the HPCC Systems architecture and its advantages for distributed machine learning.
3) A parallel DBSCAN algorithm is implemented on the HPCC platform which shows improved performance over the serial algorithm, with execution times decreasing as more nodes are used.
Parallel External Memory Algorithms Applied to Generalized Linear ModelsRevolution Analytics
This document discusses parallel external memory algorithms (PEMAs) and their application to generalized linear models (GLMs). PEMAs allow external memory algorithms to be parallelized and run on multiple cores and computers. The document describes arranging GLM code into four functions - Initialize, ProcessData, UpdateResults, and ProcessResults - to create a PEMA. It also discusses an implementation of GLM using this approach in C++ and R that can efficiently use multiple cores and nodes for extremely high performance on large datasets. Benchmark results demonstrate linear scaling of this implementation with large numbers of rows and nodes.
Deep learning for molecules, introduction to chainer chemistryKenta Oono
1) The document introduces machine learning and deep learning techniques for predicting chemical properties, including rule-based approaches versus learning-based approaches using neural message passing algorithms.
2) It discusses several graph neural network models like NFP, GGNN, WeaveNet and SchNet that can be applied to molecular graphs to predict characteristics. These models update atom representations through message passing and graph convolution operations.
3) Chainer Chemistry is introduced as a deep learning framework that can be used with these graph neural network models for chemical property prediction tasks. Examples of tasks include drug discovery and molecular generation.
The document summarizes Kazuaki Ishizaki's talk on making hardware accelerators easier to use. Some key points:
- Programs are becoming simpler while hardware is becoming more complicated, with commodity processors including hardware accelerators like GPUs.
- The speaker's recent work focuses on generating hardware accelerator code from high-level programs without needing specific hardware knowledge.
- An approach using a Java JIT compiler was presented that can generate optimized GPU code from parallel Java streams, requiring programmers to only express parallelism.
- The JIT compiler performs optimizations like aligning arrays, using read-only caches, reducing data transfer, and eliminating exception checks.
- Benchmarks show the generated GPU
By Tobias Grosser, Scalable Parallel Computing Laboratory
The COSMO climate and weather model delivers daily forecasts for Switzerland and many other nations. As a traditional HPC application it was developed with SIMD-CPUs in mind and large manual efforts were required to enable the 2016 move to GPU acceleration. As today's high-performance computer systems increasingly rely on accelerators to reach peak performance and manual translation to accelerators is both costly and difficult to maintain, we propose a fully automatic accelerator compiler for the automatic translation of scientific Fortran codes to CUDA GPU accelerated systems. Several challenges had to be overcome to make this reality: 1) improved scalability, 2) automatic data placement using unified memory, 3) loop rescheduling to expose coarse-grained parallelism, 4) inter-procedural loop optimization, and 5) plenty of performance tuning. Our evaluation shows that end-to-end automatic accelerator compilation is possible for non-trivial portions of the COSMO climate model, despite the lack of complete static information. Non-trivial loop optimizations previously implemented manually are performed fully automatically and memory management happens fully transparently using unified memory. Our preliminary results show notable performance improvements over sequential CPU code (40s to 8s reduction in execution time) and we are currently working on closing the remaining gap to hand-tuned GPU code. This talk is a status update on our most recent efforts and also intended to gather feedback on future research plans towards automatically mapping COSMO to FPGAs.
Tobias Grosser Bio
Tobias Grosser is a senior researcher in the Scalable Parallel Computing Laboratory (SPCL) of Torsten Hoefler at the Computer Science Department of ETH Zürich. Supported by a Google PhD Fellowship he received his doctoral degree from Universite Pierre et Marie Curie under the supervision of Albert Cohen. Tobias' research is taking place at the border of low-level compilers and high-level program transformations with the goal of enabling complex - but highly-beneficial - program transformations in a production compiler environment. He develops with the Polly loop optimizer a loop transformation framework which today is a community project supported throught the Polly Labs research laboratory. Tobias also developed advanced tiling schemes for the efficient execution of iterated stencils. Today Tobias leads the heterogeneous compute efforts in the Swiss University funded ComPASC project and is about to start a three year NSF Ambizione project on advancing automatic compilation and heterogenization techniques at ETH Zurich.
Email
bgerofi@riken.jp
For more info on The Linaro High Performance Computing (HPC) visit https://www.linaro.org/sig/hpc/
GTC Japan 2016 Chainer feature introductionKenta Oono
This document introduces Chainer's new trainer and dataset abstraction features which provide a standardized way to implement training loops and access datasets. The key aspects are:
- Trainer handles the overall training loop and allows extensions to customize checkpoints, logging, evaluation etc.
- Updater handles fetching mini-batches and model optimization within each loop.
- Iterators handle accessing datasets and returning mini-batches.
- Extensions can be added to the trainer for tasks like evaluation, visualization, and saving snapshots.
This abstraction makes implementing training easier and more customizable while still allowing manual control when needed. Common iterators, updaters, and extensions are provided to cover most use cases.
HC-4012, Complex Network Clustering Using GPU-based Parallel Non-negative Mat...AMD Developer Central
Presentation HC-4012, Complex Network Clustering Using GPU-based Parallel Non-negative Matrix Factorization, by Huming Zhu at the AMD Developer Summit (APU13) November 11-13, 2013.
In this deck from the Perth HPC Conference, Rob Farber from TechEnablement presents: AI is Impacting HPC Everywhere.
"The convergence of AI and HPC has created a fertile venue that is ripe for imaginative researchers — versed in AI technology — to make a big impact in a variety of scientific fields. From new hardware to new computational approaches, the true impact of deep- and machine learning on HPC is, in a word, “everywhere”. Just as technology changes in the personal computer market brought about a revolution in the design and implementation of the systems and algorithms used in high performance computing (HPC), so are recent technology changes in machine learning bringing about an AI revolution in the HPC community. Expect new HPC analytic techniques including the use of GANs (Generative Adversarial Networks) in physics-based modeling and simulation, as well as reduced precision math libraries such as NLAFET and HiCMA to revolutionize many fields of research. Other benefits of the convergence of AI and HPC include the physical instantiation of data flow architectures in FPGAs and ASICs, plus the development of powerful data analytic services."
Learn more: http://www.techenablement.com/
and
http://hpcadvisorycouncil.com/events/2019/australia-conference/agenda.php
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
A CGRA-based Approachfor Accelerating Convolutional Neural NetworksShinya Takamaeda-Y
The document presents an approach for accelerating convolutional neural networks (CNNs) using a coarse-grained reconfigurable array (CGRA) called EMAX. EMAX features processing elements with local memory to improve data locality and memory bandwidth utilization. CNN computations like convolutions are mapped to EMAX by assigning weight matrices to constant registers and performing numerous small matrix multiplications in parallel. Evaluation shows EMAX achieves better performance per memory bandwidth and area than GPUs for CNN workloads due to its optimization for small matrix operations.
Assisting User’s Transition to Titan’s Accelerated Architectureinside-BigData.com
Oak Ridge National Lab is home of Titan, the largest GPU accelerated supercomputer in the world. This fact alone can be an intimidating experience for users new to leadership computing facilities. Our facility has collected over four years of experience helping users port applications to Titan. This talk will explain common paths and tools to successfully port applications, and expose common difficulties experienced by new users. Lastly, learn how our free and open training program can assist your organization in this transition.
1. The document discusses research activities related to reducing energy consumption by at least 30% through the development of core source technologies for universal operating systems.
2. It describes four papers being presented, including ones on system and device latency modeling, power management frameworks for embedded systems, and automatic selection of power policies for operating systems.
3. It also summarizes four research topics from the National University, including performance evaluation of parallel applications using a power-aware paging method on next-generation memory architectures.
Esteban Hernandez is a PhD candidate researching heterogeneous parallel programming for weather forecasting. He has 12 years of experience in software architecture, including Linux clusters, distributed file systems, and high performance computing (HPC). HPC involves using the most efficient algorithms on high-performance computers to solve demanding problems. It is used for applications like weather prediction, fluid dynamics simulations, protein folding, and bioinformatics. Performance is often measured in floating point operations per second. Parallel computing using techniques like OpenMP, MPI, and GPUs is key to HPC. HPC systems are used across industries for applications like supply chain optimization, seismic data processing, and drug development.
The document summarizes early experiences using the Summit supercomputer at Oak Ridge National Laboratory. Summit is the world's fastest supercomputer and has been used by several early science projects. Two example applications, GTC and CoMet, have achieved good scaling and performance on Summit. Some initial issues were encountered but addressed. Overall, Summit is a very powerful system but continued software improvements are needed to optimize applications for its complex hardware architecture.
OpenPOWER Acceleration of HPCC SystemsHPCC Systems
JT Kellington, IBM and Allan Cantle, Nallatech present at the 2015 HPCC Systems Engineering Summit Community Day about porting HPCC Systems to the POWER8-based ppc64el architecture.
Parallelization of Coupled Cluster Code with OpenMPAnil Bohare
This document discusses parallelizing a Coupled Cluster Singles and Doubles (CCSD) molecular dynamics application code using OpenMP to reduce its execution time on multi-core systems. Specifically, it identifies compute-intensive loops in the CCSD code for parallelization with OpenMP directives like PARALLEL DO. Performance evaluations show the optimized OpenMP version achieves a 35.66% reduction in wall clock time as the number of cores increases, demonstrating the effectiveness of the parallelization approach. Further improvements could involve a hybrid OpenMP-MPI model.
The document summarizes the results of a study that evaluated the performance of different Platform-as-a-Service offerings for running SQL on Hadoop workloads. The study tested Amazon EMR, Google Cloud DataProc, Microsoft Azure HDInsight, and Rackspace Cloud Big Data using the TPC-H benchmark at various data sizes up to 1 terabyte. It found that at 1TB, lower-end systems had poorer performance. In general, HDInsight running on D4 instances and Rackspace Cloud Big Data on dedicated hardware had the best scalability and execution times. The study provides insights into the performance, scalability, and price-performance of running SQL on Hadoop in the cloud.
Application Profiling at the HPCAC High Performance Centerinside-BigData.com
Pak Lui from the HPC Advisory Council presented this deck at the 2017 Stanford HPC Conference.
"To achieve good scalability performance on the HPC scientific applications typically involves good understanding of the workload though performing profile analysis, and comparing behaviors of using different hardware which pinpoint bottlenecks in different areas of the HPC cluster. In this session, a selection of HPC applications will be shown to demonstrate various methods of profiling and analysis to determine the bottleneck, and the effectiveness of the tuning to improve on the application performance from tests conducted at the HPC Advisory Council High Performance Center."
Watch the video presentation: http://wp.me/p3RLHQ-gpY
Learn more: http://hpcadvisorycouncil.com
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
05 Preparing for Extreme Geterogeneity in HPCRCCSRENKEI
This document summarizes a presentation given by Jeffrey S. Vetter at an international symposium in Kobe on preparing for extreme heterogeneity in high performance computing. The presentation highlights that contemporary HPC systems provide evidence that power constraints are driving rapid changes to processor, node, memory, and I/O architectures. Applications will not be portable across these diverse new architectures, and programming models and performance prediction tools are needed to address this challenge. The presentation also discusses emerging technologies like FPGAs, GPUs, and non-volatile memory and the need for portable programming models to support heterogeneous processing.
This document discusses current trends in high performance computing. It begins with an introduction to high performance computing and its applications in science, engineering, business analysis, and more. It then discusses why high performance computing is needed due to changes in scientific discovery, the need to solve larger problems, and modern business needs. The document also discusses the top 500 supercomputers in the world and provides examples of some of the most powerful systems. It then covers performance development trends and challenges in increasing processor speeds. The rest of the document discusses parallel computing approaches using multi-core and many-core architectures, as well as cluster, grid, and cloud computing models for high performance.
The increasing demand for computing power in fields such as biology, finance, machine learning is pushing the adoption of reconfigurable hardware in order to keep up with the required performance level at a sustainable power consumption. Within this context, FPGA devices represent an interesting solution as they combine the benefits of power efficiency, performance and flexibility. Nevertheless, the steep learning curve and experience needed to develop efficient FPGA-based systems represents one of the main limiting factor for a broad utilization of such devices.
In this talk, we present CAOS, a framework which helps the application designer in identifying acceleration opportunities and guides through the implementation of the final FPGA-based system. The CAOS platform targets the full stack of the application optimization process, starting from the identification of the kernel functions to accelerate, to the optimization of such kernels and to the generation of the runtime management and the configuration files needed to program the FPGA.
This document discusses running the Apache Spark framework on HPC clusters at Virginia Tech (VT) for big data analytics and machine learning. It describes implementing Spark on the VT Advanced Research Computing (ARC) clusters, which allow both fine-grained parallelism for machine learning algorithms and coarse-grained parallelism for big data. Evaluation results show the resource utilization of Spark deployed in standalone and YARN modes at different scales. Future work aims to examine scheduler overhead, shared resource contention, running machine learning on real network logs, and analyzing performance on streaming data.
The document provides information about available HPC resources at CSUC. It summarizes the hardware facilities which include the Canigó and Pirineus II clusters totaling 3,888 cores and 391 TFlops of computing power. It describes the working environment including the Slurm workload manager, storage units, and development tools available. It also outlines how users can access the services through RES projects, pricing, and the EuroCC Spain testbed for national HPC competence.
Choose Your Weapon: Comparing Spark on FPGAs vs GPUsDatabricks
Today, general-purpose CPU clusters are the most widely used environment for data analytics workloads. Recently, acceleration solutions employing field-programmable hardware have emerged providing cost, performance and power consumption advantages. Field programmable gate arrays (FPGAs) and graphics processing units (GPUs) are two leading technologies being applied. GPUs are well-known for high-performance dense-matrix, highly regular operations such as graphics processing and matrix manipulation. FPGAs are flexible in terms of programming architecture and are adept at providing performance for operations that contain conditionals and/or branches. These architectural differences have significant performance impacts, which manifest all the way up to the application layer. It is therefore critical that data scientists and engineers understand these impacts in order to inform decisions about if and how to accelerate.
This talk will characterize the architectural aspects of the two hardware types as applied to analytics, with the ultimate goal of informing the application programmer. Recently, both GPUs and FPGAs have been applied to Apache SparkSQL, via services on Amazon Web Services (AWS) cloud. These solutions’ goal is providing Spark users high performance and cost savings. We first characterize the key aspects of the two hardware platforms. Based on this characterization, we examine and contrast the sets and types of SparkSQL operations they accelerate well, how they accelerate them, and the implications for the user’s application. Finally, we present and analyze a performance comparison of the two AWS solutions (one FPGA-based, one GPU-based). The tests employ the TPC-DS (decision support) benchmark suite, a widely used performance test for data analytics.
Multicore processors are becoming prevalent due to the limitations of increasing single core clock speeds. This presents challenges for software to effectively utilize multiple cores. Functional programming is one option that avoids shared state and parallel access issues, but requires a significant mindset shift. Refactoring existing code using tools is another option to incrementally introduce parallelism. Hybrid approaches combining paradigms may also help transition. Key application areas currently benefiting include servers, scientific computing, and packet processing. However, significant existing code is not easily parallelized and performance gains have yet to be fully realized.
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Computer conferences organized by ScienceFather group. ScienceFather takes the privilege to invite speakers participants students delegates and exhibitors from across the globe to its International Conference on computer conferences to be held in the Various Beautiful cites of the world. computer conferences are a discussion of common Inventions-related issues and additionally trade information share proof thoughts and insight into advanced developments in the science inventions service system. New technology may create many materials and devices with a vast range of applications such as in Science medicine electronics biomaterials energy production and consumer products.
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QuantumChemistry500
1. QuantumChemistry500
NAKATA Maho (RIKEN)
ISHIMURA Kazuya (IMS)
HIRANO Toshiyuki (U of Tokyo)
Jeff HAMMOND (Intel)
2014/11/18 Tue Nov 18 @ 12:15pm-1:15pm Room 295
2. Role of HPC Benchmarks
• Represent important applications.
• Based upon simple codes that non-experts
(especially vendors) can optimize them.
• Be somewhat orthogonal to each other.
• Stress computer hardware in interesting ways.
• Allow for objective comparison between
different computing platforms.
3. Current HPC Benchmarks
• Top500 = HPL: LU factorization (just DGEMM?).
• Graph500: Non-numerical benchmark.
• HPCG: Conjugate gradient PDE solver for simple
stencil.
• HPGMG: Geometric multigride PDE solver.
• HPCChallenge: Collection of benchmarks.
• STREAM
• Scalable Synthetic Compact Applications (SSCA)
• DOE Mini-apps
• ...
4. Quantum Chemistry in HPC
• QC/DFT major component of scientific workloads.
Many QC apps are
built by users and
un-tracked.
Figure courtesy of Richard Gerber (NERSC)
VASP and
NWChem build
matrix differently.
QC500 represents
harder way.
5. What is QuantumChemistry 500?
• Very different properties than existing benchmarks:
– nontrivial load-balancing (irregular, dynamic tasks)
– small- to mid-sized messages (between 8B and 100KB)
– nontrivial to vectorize (short SIMD)
– balance of memory- and compute- intensive
– kernels contain branching
– modest dense linear algebra (not HPL-sized)
• Allows many implementations as long as same numerically.
– Easier entry for novel hardware (VHDL impl???).
• Optimized implementations already exist:
NWChem, …, GTFOCK (OpenMP/SSE/AVX), TeraChem (GPU)
6. What is QuantumChemistry 500?
• Chemistry-specific benchmark targeting most common
method(s). Initial target is Hartree-Fock SCF (DFT-like).
• Science-driven, scale-invariant focus:
Performance per node/watt/etc…
• Allows different algorithms and software as long as the
answer is the same.
• Building upon existing HPC codes for initial data;
encourage new optimized code development.
• Exercise hardware using challenging kernels not captured
by any existing benchmark.
• Avoid Goodhart’s Law (A machine built just for QC500 will
be good at many things...)
7. Hartree-Fock/SCF/DFT Theory
This is the classic algorithm; variations exist.
● Formation of matrix is irregular.
● Matrix elements highly non-trivial
(3+ methods exist).
● Diagonalize via GEVP or DMM.
Quantum chemists have
implemented many algorithms
in many software packages
and yet it is possible to obtain
numerical consistency between
codes!
9. Input Specification
• Given data as reference
– Atomic coordinates, molecule charge and spin.
– Basis set (cc-pVXZ – to allow for a range of problem sizes)
– Sample input files for several quantum chemistry packages
to enable data collection by operators.
• Requirements for accuracy/precision of final
results.
• Hartree-Fock and DFT (B3LYP)
• Other methods under investigation for the future.
10. Implementations
• ACESIII
• CFOUR
• Dalton
• FireFly
• GAMESS
• Gaussian
• GTFock
• Molpro
• Molcas
• NWChem
• ORCA
• ProteinDF
• Psi4
• QChem
• SMASH
• TeraChem
• TurboMole
• etc.
Submissions must include detailed
algorithmic and implementation
specification sufficient for reproduction
in a different implementation.
Numerical tolerances must be
documented.
The best specification includes complete
source code.
11. Reference Results
● We will use GAMESS, NWChem, and ProteinDF to
generate reference energy values.
>>> They must agree to be a valid reference!
● These codes are free, parallel and widely supported
by HPC folks. Involved in many procurements so
vendors are familiar.
● Reference codes do not have a lot of approximations
by default (no linear-scaling tricks).
12. Conditions for valid result
• Converged total energy should match our
reference value to six (?) decimal places in
atomic unit.
• Converged orbital energies should match our
reference value to three (?) decimal places in
atomic unit.
• These criteria are open for debate. Some may
argue for higher accuracy...
13. Results to be submitted
• Elapsed time
• Which program package is used & Input file
– Changes from default (e.g., cutoff value)
– Details of implementation and algorithms
• Output file
– Total energy and orbital energies
• Machine configuration
– CPU, memory, network, storage and their peak
(theoretical) performance
• All of above info will be open to the public
14. TODO until next year
• Forming steering committee of scientific
experts with deep HPC knowledge:
• academia/national labs
• industry (IBM, NVIDIA, …)
• Digital presence
• Reference data and validation infrastructure
• The first benchmark results on several
supercomputers.