A GPU-based Correlator X-engine Implemented on the CHIME Pathfinder

被引：0

作者：

Denman, Nolan ^{[1
,2
]}

Amiri, Mandana ^{[3
]}

Bandura, Kevin ^{[4
]}

Connor, Liam ^{[1
,2
,5
]}

Dobbs, Matt ^{[4
,6
]}

Fandino, Mateus ^{[3
]}

Halpern, Mark ^{[3
]}

Hincks, Adam ^{[3
]}

Hinshaw, Gary ^{[3
]}

Hofer, Carolin ^{[3
]}

Klages, Peter ^{[1
]}

Masui, Kiyoshi ^{[3
,6
]}

Parra, Juan Mena ^{[4
]}

Newburgh, Laura ^{[1
]}

Recnik, Andre ^{[1
]}

Shaw, J. Richard ^{[5
]}

Sigurdson, Kris ^{[3
]}

Smith, Kendrick ^{[7
]}

Vanderlinde, Keith ^{[1
,2
]}

机构：

[1] Univ Toronto, Dunlap Inst, Toronto, ON M5S 1A1, Canada

[2] Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5S 1A1, Canada

[3] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V5Z 1M9, Canada

[4] McGill Univ, Dept Phys, Montreal, PQ H3A 2T5, Canada

[5] Canadian Inst Theoret Astrophys, Toronto, ON, Canada

[6] Canadian Inst Adv Res, CIFAR Program Cosmol & Grav, Toronto, ON, Canada

[7] Perimeter Inst Theoret Phys, Waterloo, ON, Canada

来源：

PROCEEDINGS OF THE ASAP2015 2015 IEEE 26TH INTERNATIONAL CONFERENCE ON APPLICATION-SPECIFIC SYSTEMS, ARCHITECTURES AND PROCESSORS | 2015年

关键词：

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

We present the design and implementation of a custom GPU-based compute cluster that provides the correlation X-engine of the CHIME Pathfinder radio telescope. It is among the largest such systems in operation, correlating 32,896 baselines (256 inputs) over 400MHz of radio bandwidth. Making heavy use of consumer-grade parts and a custom software stack, the system was developed at a small fraction of the cost of comparable installations. Unlike existing GPU backends, this system is built around OpenCL kernels running on consumer-level AMD GPUs, taking advantage of low-cost hardware and leveraging packed integer operations to double algorithmic efficiency. The system achieves the required 105 TOPS in a 10kW power envelope, making it one of the most power-efficient X-engines in use today.

引用

页码：35 / 40

页数：6

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