SCHEDULE: NOV 10-16, 2012
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Uncovering New Parallel Program Features with Parallel Block Vectors and Harmony
SESSION: Doctoral Showcase - Early Research Showcase
EVENT TYPE: Doctoral Showcase
TIME: 3:30PM - 5:00PM
SESSION CHAIR: Wojtek James Goscinski
Presenter(s):Melanie Kambadur
ROOM:155-F
ABSTRACT:
The efficient execution of well-parallelized applications is central to performance
in the multicore era. Program analysis tools support the hardware and software
sides of this effort by exposing relevant features of multithreaded
applications. This talk describes Parallel Block Vectors, which uncover
previously unseen characteristics of parallel programs. Parallel Block
Vectors, or PBVs, provide block execution profiles per concurrency phase (e.g.,
the block execution profile of all serial regions of a program). This
information provides a direct and fine-grained mapping between an application's
runtime parallel phases and the static code that makes up those phases. PBVs
can be collected with minimal application perturbation using Harmony, an
instrumentation pass for the LLVM compiler. We have already applied PBVs to
uncover novel insights about parallel applications that are relevant to
architectural design, and we also have ideas for using PBVs in fields such as
software engineering, compilers, and operating systems.
Chair/Presenter Details:
Wojtek James Goscinski (Chair) - Monash University
Melanie Kambadur - Columbia University
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