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Thursday, August 25 • 14:30 - 15:00
High-Performance Virtualization for HPC Cloud on Xen - Jun Nakajima & Tianyu Lan, Intel Corp.

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We have been working to get Xen up and running on self-boot Intel® Xeon Phi processors to build HPC clouds. We see several challenges because of the unique (but not unusual for HPC) hardware technologies and performance requirements. For example, such hardware technologies include 1) >256 CPUs, 2) MCDRAM (high-bandwidth memory), 3) integrated fabric (i.e. Intel® Omni-Path). Unlike the “coprocessor“ model, supporting self-boot with >256 CPUs has various implications to Xen, including scheduling and scalability. We need to allow user applications to use MCDRAM directly to perform optimally. Also, we need to enable the integrated HPC fabric for the VM to use by direct I/O assignment.

In addition, we have only a single VM on each node to meet the high-performance requirements of HPC clouds. This (i.e. non-shared) model allowed us to optimize Xen more. In this talk, we share our design and lessons, and discuss the options we considered to achieve high-performance virtualization for HPC.

Speakers
TL

Tianyu Lan

Virtualization Software Engineer, Intel
I am an intel virtualization software Engineer and focuses on the KVM/Xen feature enabling. I also have worked on the Linux kernel ACPI and power management subsystem several years.
avatar for Jun Nakajima

Jun Nakajima

Senior Principal Engineer, Intel Open Source Technology Center
Jun Nakajima is a Senior Principal Engineer leading open source virtualization and cloud projects, such as, KVM, Xen, and OpenStack at the Intel Open Source Technology Center. Jun has been working on various virtualization projects for almost a decade, and NFV is one of his ongoing projects. Jun presented a number of times at technical conferences, including KVM Forum, Xen Summit, and USENIX. He has over 20 years of experience with operating... Read More →



Thursday August 25, 2016 14:30 - 15:00
Pier 4

Attendees (11)