62 lines
2.3 KiB
Markdown
62 lines
2.3 KiB
Markdown
---
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title: Node-Aware Stencil Communication for Heterogeneous Supercomputers
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event: C3SR Bi-weekly Technical Seminar
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event_url:
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location: Coordinated Science Lab 216
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address:
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street: 1308 W Main St
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city: Urbana
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region: IL
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postcode: '61801'
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country: United States
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summary: Optimizing Multi-GPU Stencil Communication
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abstract: "High-performance distributed computing systems increasingly feature nodes that have multiple CPU sockets and multiple GPUs. The communication bandwidth between these components is non-uniform. Furthermore, these systems can expose different communication capabilities between these components. For communication-heavy applications, optimally using these capabilities is challenging and essential for performance.
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This work presents approaches for automatic data placement and communication implementation for 3D stencil codes on multi-GPU nodes with non-homogeneous communication performance and capabilities. Benchmarking results in the Summit system show that choices in placement can result in a 20% improvements in single-node exchange, and communication specialization can yield a further 6x improvement in exchange time in a single node, and a 16% improvement at 1536 GPUs."
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# Talk start and end times.
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# End time can optionally be hidden by prefixing the line with `#`.
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date: "2020-02-28T14:00:00Z"
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date_end: "2020-02-28T15:00:00Z"
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all_day: false
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# Schedule page publish date (NOT talk date).
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publishDate: "2020-03-08T00:00:00Z"
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authors: ["Carl Pearson"]
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tags: []
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# Is this a featured talk? (true/false)
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featured: true
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image:
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caption: 'Image credit: [**Unsplash**](https://unsplash.com/photos/bzdhc5b3Bxs)'
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focal_point: Right
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links:
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url_code: ""
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url_pdf: ""
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url_slides: "pdf/20200228_c3sr_stencil.pdf"
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url_video: ""
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# Markdown Slides (optional).
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# Associate this talk with Markdown slides.
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# Simply enter your slide deck's filename without extension.
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# E.g. `slides = "example-slides"` references `content/slides/example-slides.md`.
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# Otherwise, set `slides = ""`.
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slides: ""
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# Projects (optional).
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# Associate this post with one or more of your projects.
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# Simply enter your project's folder or file name without extension.
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# E.g. `projects = ["internal-project"]` references `content/project/deep-learning/index.md`.
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# Otherwise, set `projects = []`.
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projects:
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- stencil_library
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# Enable math on this page?
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math: true
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---
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