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- W2345521132 abstract "Data provenance strives for explaining how the computation was performed by recording a trace of the execution. The provenance trace is useful across a wide-range of workflows to improve the dependability, security, and efficiency of software systems. In this paper, we present Inspector, a POSIX-compliant data provenance library for shared-memory multithreaded programs. The Inspector library is completely transparent and easy to use: it can be used as a replacement for the pthreads library by a simple exchange of libraries linked, without even recompiling the application code. To achieve this result, we present a parallel provenance algorithm that records control, data, and schedule dependencies using a Concurrent Provenance Graph (CPG). We implemented our algorithm to operate at the compiled binary code level by leveraging a combination of OS-specific mechanisms, and recently released Intel PT ISA extensions as part of the Broadwell micro-architecture. Our evaluation on a multicore platform using applications from multithreaded benchmarks suites (PARSEC and Phoenix) shows reasonable provenance overheads for a majority of applications. Lastly, we briefly describe three case-studies where the generic interface exported by Inspector is being used to improve the dependability, security, and efficiency of systems. The Inspector library is publicly available for further use in a wide range of other provenance workflows." @default.
- W2345521132 created "2016-06-24" @default.
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- W2345521132 date "2016-05-02" @default.
- W2345521132 modified "2023-09-27" @default.
- W2345521132 title "Inspector: A Data Provenance Library for Multithreaded Programs." @default.
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