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Primeur weekly 2021-01-11

Exascale supercomputing

Preparing an earthquake risk assessment application for exascale ...

Quantum computing

A bit too much: reducing the bit width of Ising models for quantum annealing ...

The world's first integrated quantum communication network ...

Focus on Europe

GBP 20 million funding boost for science supercomputer will drive science simulation and UK-wide innovation ...

Northern Data acquires data centre site in Northern Sweden fully powered by green energy ...

Research and Markets to issue report on High Performance Computing (HPC) Market by Component, Deployment Type, Organization Size, Server Prices Band, Application Area, and Region - Global Forecast to 2025 ...

Environmental researchers benefit from powerful supercomputer at Plymouth Marine Laboratory ...

Middleware

XSEDE welcomes new service providers ...

Hardware

IBM appoints Gary D. Cohn as Vice Chairman ...

IBM appoints Martin Schroeter as CEO of "NewCo" independent managed infrastructure services business to spin out from IBM ...

Light-based processors boost machine-learning processing ...

E4 Computer Engineering announces University of Pisa as the first customer of Ultrafast Storage, Totally Integrated (USTI), the new solution for high performance distributed block storage ...

Existing Northern Data bitcoin mining customer expands contract volume by more than 200 MW ...

Power XL Pro launched as new professional server based on AMD EPYC technology ...

Swinburne-led research team demonstrates world's fastest optical neuromorphic processor ...

Applications

Supercomputer models describe chloride's role in corrosion ...

HPC-AI Advisory Council to host HPC AI AC Conference in Japan on January, 26 ...

Insights through atomic simulation ...

Advanced materials in a snap ...

New data-driven global climate model provides projections for urban environments ...

Frequency data for stable power supply ...

Physicists observe competition between magnetic orders ...

UTSA Artificial Intelligence Consortium receives over $1 million in research funding ...

Entangling electrons with heat ...

NIO partners with NVIDIA to develop a new generation of automated driving electric vehicles ...

Navantia leverages Ansys' digital transformation solutions to design next-gen naval vessels ...

Engineering graduate student places second in international research competition ...

The Cloud

Covid-19 genome sequencing project gets major upgrade ...

IBM provides Harris-Stowe State University with $2 million in Artificial Intelligence and open hybrid Cloud technology resources to help students build modern skills ...

IBM and Avertra collaborate to drive digital transformation for energy & utilities clients with IBM Cloud ...

UJET CCaaS Cloud contact centre now available on Oracle Cloud Marketplace ...

Preparing an earthquake risk assessment application for exascale


6 Jan 2021 Argonne - As to prepare for next-generation systems like Aurora, developers at the U.S. Department of Energy's (DOE) Argonne National Laboratory are working to port the SW4 application - a multidisciplinary simulation code for earthquake hazard and risk assessment - to run on GPU-based Intel machines. As part of the EQSIM project supported by DOE's Exascale Computing Project, Brian Homerding of the Argonne Leadership Computing Facility (ALCF) and Houjun Tang of Lawrence Berkeley National Laboratory are leading an effort to use the C++ abstraction library RAJA, whose SYCL backend is currently being written.

RAJA is a software library of C++ abstractions targeting portable, parallel loop execution. These abstractions insulate the application from the back-end programming model details. Developers port their RAJA application to new back-ends by implementing template parameter execution policies, which are typically stored in header files. These execution policies include statements that express how loops should be executed and how indexes should map to the back-end indexes. This allows the kernel body to remain unchanged while porting to a new back-end. To ensure that the abstraction layer does not introduce overhead, the RAJA Performance Suite is used to assess the performance of loop-based HPC kernels implemented in both RAJA and the underlying back-end programming model.

Previous releases of SW4 were OpenMP implementations for multi-threaded CPU execution. Recent releases utilize RAJA with implemented execution policies using OpenMP and CUDA statements for targeting CPUs and NVIDIA GPUs respectively. The RAJA SYCL and OpenMP-Target backends will be available for execution on Aurora. The existing execution policies will be implemented for these back-ends.

The porting effort was initiated with the SW4lite proxy application, which provided a development vehicle for driving preparation while also allowing the developers to quickly identify issues for rapid resolution. The RAJA-SYCL back-end execution policies have been implemented in the SW4lite proxy application for early testing and experimentation.

Enabling the RAJA on Intel devices has been accomplished by utilizing oneAPI and several extensions in the DPC++ compiler. Intel's Unnamed kernel lambdas are critical for portability libraries to support general kernel execution. The Unified Shared Memory extension allows abstraction libraries to decouple loop execution from memory management. Intel's Extended Atomics and Global ID access have enabled support for the RAJA reduction object.

The developers have also made important use of many features of the SYCL programming model. Principal among these is the use SYCL nd_ranges to support fine-grained control over loop execution. The nd_ranges provide the flexibility required by a library to handle complex and simple loop executions. Through nd_ranges the RAJA-SYCL backend can launch simple one-dimensional SYCL kernels or complex three dimensional kernels with explicit work group sizes.
Source: Argonne Leadership Computing Facility - ALCF

Back to Table of contents

Primeur weekly 2021-01-11

Exascale supercomputing

Preparing an earthquake risk assessment application for exascale ...

Quantum computing

A bit too much: reducing the bit width of Ising models for quantum annealing ...

The world's first integrated quantum communication network ...

Focus on Europe

GBP 20 million funding boost for science supercomputer will drive science simulation and UK-wide innovation ...

Northern Data acquires data centre site in Northern Sweden fully powered by green energy ...

Research and Markets to issue report on High Performance Computing (HPC) Market by Component, Deployment Type, Organization Size, Server Prices Band, Application Area, and Region - Global Forecast to 2025 ...

Environmental researchers benefit from powerful supercomputer at Plymouth Marine Laboratory ...

Middleware

XSEDE welcomes new service providers ...

Hardware

IBM appoints Gary D. Cohn as Vice Chairman ...

IBM appoints Martin Schroeter as CEO of "NewCo" independent managed infrastructure services business to spin out from IBM ...

Light-based processors boost machine-learning processing ...

E4 Computer Engineering announces University of Pisa as the first customer of Ultrafast Storage, Totally Integrated (USTI), the new solution for high performance distributed block storage ...

Existing Northern Data bitcoin mining customer expands contract volume by more than 200 MW ...

Power XL Pro launched as new professional server based on AMD EPYC technology ...

Swinburne-led research team demonstrates world's fastest optical neuromorphic processor ...

Applications

Supercomputer models describe chloride's role in corrosion ...

HPC-AI Advisory Council to host HPC AI AC Conference in Japan on January, 26 ...

Insights through atomic simulation ...

Advanced materials in a snap ...

New data-driven global climate model provides projections for urban environments ...

Frequency data for stable power supply ...

Physicists observe competition between magnetic orders ...

UTSA Artificial Intelligence Consortium receives over $1 million in research funding ...

Entangling electrons with heat ...

NIO partners with NVIDIA to develop a new generation of automated driving electric vehicles ...

Navantia leverages Ansys' digital transformation solutions to design next-gen naval vessels ...

Engineering graduate student places second in international research competition ...

The Cloud

Covid-19 genome sequencing project gets major upgrade ...

IBM provides Harris-Stowe State University with $2 million in Artificial Intelligence and open hybrid Cloud technology resources to help students build modern skills ...

IBM and Avertra collaborate to drive digital transformation for energy & utilities clients with IBM Cloud ...

UJET CCaaS Cloud contact centre now available on Oracle Cloud Marketplace ...