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null (Ed.)Compilers are generally not aware of the semantics of library-based parallel programming models such as MPI and OpenSHMEM, and hence are unable to detect programming errors related to their use. To alleviate this issue, we developed a custom static checker for OpenSHMEM programs based on LLVM’s Clang Static Analyzer framework (CSA). We leverage the Symbolic Execution engine of the core Static Analyzer framework and its path-sensitive analysis to check for bugs on all OpenSHMEM program paths. We have identified common programming mistakes in OpenSHMEM programs that are detectable at compile-time and provided checks for them in the analyzer. They cover: utilization of the right type of mem- ory (private vs. symmetric memory); safe/synchronized access to program data in the presence of asynchronous, one-sided communication; and double-free of memories allocated using OpenSHMEM memory allocation routines. Our experimental analysis showed that the static checker successfully detects bugs in OpenSHMEM code.more » « less
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