System-level State Equality Detection for the Formal Dynamic Verification of Legacy Distributed Applications

Marion Guthmuller 1, 2 Martin Quinson 1, 2 Gabriel Corona 2, 1
1 ALGORILLE - Algorithms for the Grid
Inria Nancy - Grand Est, LORIA - NSS - Department of Networks, Systems and Services
2 VERIDIS - Modeling and Verification of Distributed Algorithms and Systems
LORIA - FM - Department of Formal Methods , Inria Nancy - Grand Est, MPII - Max-Planck-Institut für Informatik
Abstract : The ever increasing complexity of distributed systems mandates to formally verify their design and implementation. Unfortunately, the common approaches and existing tools to formally establish the correctness of these systems remain hardly applicable to the kind of legacy applications that are commonly found in the HPC community. We present how system-level memory introspection can be achieved directly at runtime without relying on the source code analysis. We use this mechanism to detect the equality of the application’s state at system level. As the storage of the system state may be memory expensive, we compact the memory by sharing unchanged memory pages between snapshots. This enables the automated verification of safety and liveness properties on legacy distributed applications written in Fortran or C/C++ using the MPI standard. We demonstrate the effectiveness of our approach on several programs from the MPICH3 test suite.
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Marion Guthmuller, Martin Quinson, Gabriel Corona. System-level State Equality Detection for the Formal Dynamic Verification of Legacy Distributed Applications. Formal Approaches to Parallel and Distributed Systems (4PAD) - Special Session of Parallel, Distributed and network-based Processing (PDP), Mar 2015, Turku, Finland. ⟨hal-01097204⟩

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