Enabling Exascale Hardware and Software Design Through Scalable System Virtualization
ApproachObjectives
Architecture: Virtualization for Exascale
Impact
Compute Nodes
I/O Nodes
Login Nodes
PE
PE PE
PE PE
PE PE PE PE
PE PE PE PE
PE PE PE PE
PE
VirtualMachine
Palacios
Linux/Kitten
Challenges
Accomplishments
Formal Problem Statement Research Products/Artifacts
Provide a novel solution for testing at scale
Ease the transition to production by supporting scaling of
legacy system software
Enable advanced research
Architecture research toward exascale
New parallel programming models
System software research
Extend the Kitten/Palacios prototype
Support for modern hardware
Port to HPC operating systems
Integration of system management tools
Design & implement new capabilities
Integration with micro-architectural simulator
Binary translation for the emulation of new
hardware
Fault injection
Provide a test-bed solution for exascale
Vertical profiling
Fault injection
Provide a platform for exascale research
System architecture research
Programming languages research
System software research
Application must be ported to HPC systems
Scientists focus on technical issues rather than
science
Expensive in term of time and resource
Limited availability of test-beds
Makes the transition to large-scale systems
difficult
Limit architecture and system research at scale
Difficult to isolate the application from the hardware
Minimize the overhead created by the virtualization
Efficient access to hardware
Decrease overhead associated with context switches of virtual machines
Efficient capabilities such as migration
Cope with the complexity created by virtualization
Management and deployment tools
Tools for application tracing and profiling in a virtual environment
A test-bed simulating large-scale systems
Tools which ease the transition to large-scale systems &
enable advanced system management
• Improves system customization, adaptation, and resilience
Advanced security capabilities (applications are isolated
into virtual machines)
Software releases
Several versions of Palacios have been released: http://v3vee.org/
• Several versions of Kitten have been release:
https://software.sandia.gov/trac/kitten
• Virtualization system management tools available in OSCAR:
http://oscar.openclustergroup.org
• Experiments
• Use of an INCITE award for testing on Cray systems (e.g., JAGUAR)
Contact:
Stephen L. Scott – [email protected]
Thomas Naughton – [email protected]
Geoffroy R. Vallée – [email protected]
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