Architecture support for accelerator-rich CMPs

This work discusses a hardware architectural support for accelerator-rich CMPs (ARC). First, we present a hardware resource management scheme for accelerator sharing. This scheme supports sharing and arbitration of multiple cores for a common set of accelerators, and it uses a hardware-based arbitra...

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Bibliographic Details
Main Authors: Cong, Jason, Ghodrat, Mohammad Ali, Gill, Michael, Grigorian, Beayna, Reinman, Glenn
Format: Conference Proceeding
Language:English
Subjects:
Acceleration
Accelerator Sharing
Accelerator Virtualization
Chip multiprocessor
Computer architecture
Computer systems organization > Architectures > Other architectures > Heterogeneous (hybrid) systems
Delay
Hardware
Hardware Accelerators
Message systems
Software
System-on-a-chip
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Description
Summary:This work discusses a hardware architectural support for accelerator-rich CMPs (ARC). First, we present a hardware resource management scheme for accelerator sharing. This scheme supports sharing and arbitration of multiple cores for a common set of accelerators, and it uses a hardware-based arbitration mechanism to provide feedback to cores to indicate the wait time before a particular resource becomes available. Second, we propose a light-weight interrupt system to reduce the OS overhead of handling interrupts which occur frequently in an accelerator-rich platform. Third, we propose architectural support that allows us to compose a larger virtual accelerator out of multiple smaller accelerators. We have also implemented a complete simulation tool-chain to verify our ARC architecture. Experimental results show significant performance (on average 51X) and energy improvement (on average 17X) compared to approaches using OS-based accelerator management.
ISSN:0738-100X
DOI:10.1145/2228360.2228512