Shared prefetching to reduce execution skew in multi-threaded systems
Abstract
Mechanisms are provided for optimizing code to perform prefetching of data into a shared memory of a computing device that is shared by a plurality of threads that execute on the computing device. A memory stream of a portion of code that is shared by the plurality of threads is identified. A set of prefetch instructions is distributed across the plurality of threads. Prefetch instructions are inserted into the instruction sequences of the plurality of threads such that each instruction sequence has a separate sub-portion of the set of prefetch instructions, thereby generating optimized code. Executable code is generated based on the optimized code and stored in a storage device. The executable code, when executed, performs the prefetches associated with the distributed set of prefetch instructions in a shared manner across the plurality of threads.
- Inventors:
- Issue Date:
- Research Org.:
- International Business Machines Corp., Armonk, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1087835
- Patent Number(s):
- 8490071
- Application Number:
- 12/773,454
- Assignee:
- International Business Machines Corporation (Armonk, NY)
- Patent Classifications (CPCs):
-
G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
- DOE Contract Number:
- B554331
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 97 MATHEMATICS AND COMPUTING
Citation Formats
Eichenberger, Alexandre E, and Gunnels, John A. Shared prefetching to reduce execution skew in multi-threaded systems. United States: N. p., 2013.
Web.
Eichenberger, Alexandre E, & Gunnels, John A. Shared prefetching to reduce execution skew in multi-threaded systems. United States.
Eichenberger, Alexandre E, and Gunnels, John A. Tue .
"Shared prefetching to reduce execution skew in multi-threaded systems". United States. https://www.osti.gov/servlets/purl/1087835.
@article{osti_1087835,
title = {Shared prefetching to reduce execution skew in multi-threaded systems},
author = {Eichenberger, Alexandre E and Gunnels, John A},
abstractNote = {Mechanisms are provided for optimizing code to perform prefetching of data into a shared memory of a computing device that is shared by a plurality of threads that execute on the computing device. A memory stream of a portion of code that is shared by the plurality of threads is identified. A set of prefetch instructions is distributed across the plurality of threads. Prefetch instructions are inserted into the instruction sequences of the plurality of threads such that each instruction sequence has a separate sub-portion of the set of prefetch instructions, thereby generating optimized code. Executable code is generated based on the optimized code and stored in a storage device. The executable code, when executed, performs the prefetches associated with the distributed set of prefetch instructions in a shared manner across the plurality of threads.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 16 00:00:00 EDT 2013},
month = {Tue Jul 16 00:00:00 EDT 2013}
}