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The Log-Based Architectures (LBA) project focuses on developing
extensions for many-core processors that enable efficient logging and
extraction of run time execution events and demonstrating the benefits
of such extensions for performance, debugging, security and recovery.
An early application of this technology is the acceleration of
correctness-checking tools (also known as "lifeguards" in this context).
Software lifeguards are almost always used only during the debugging
phase of the software development cycle due to their relatively high
runtime overhead. However, these tools are also of value once the
program is deployed in the field.
One of the goals of the LBA project is to reduce the overhead of
lifeguards sufficiently to make feasible the inclusion of lifeguards in
the standard runtime of deployed systems. To this end, the proposed LBA
extensions accelerate the performance of lifeguard tools by providing
more efficient access to interesting events for the program-under-test.
The perceived runtime overhead can be reduced further in multicore
applications by leveraging on-die cores that would otherwise be idle for
the execution of the lifeguard.
Researchers
Collaborators
- Babak Falsafi (CMU)
- Anastassia Ailamaki (CMU)
- Greg Ganger (CMU)
- Vijaya Ramachandran (U.T. Austin)
Students
- Olatunji Ruwase (CMU)
- Theodoros Strigkos (CMU)
- Evangelos Vlachos (CMU)
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