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Deterministic execution of a multithreaded application guarantees the same output as long as the application runs with the same input parameters. Determinism helps a programmer to test and debug an application and to provide fault-tolerance in the systems based on replicas. Additionally, Transactional Memory (TM) greatly simplifies development of multithreaded applications where applications use transactions...
Software-implemented fault tolerance (SIFT) mechanisms allow to tolerate transient hardware faults in commercial off-the-shelf (COTS) systems without using specialized resilient hardware. Unfortunately, existing SIFT methods at both the compiler and the operating system levels are often restricted to single-threaded applications and hence do not apply to multithreaded software on modern multicore...
We analyze the fundamental performance impact of enforcing a fixed order of synchronization operations to achieve weak deterministic execution. Our analysis is in three parts, performed on a real system using the SPLASH-2 and PAR-SEC benchmarks. First, we quantify the impact of various sources of nondeterminism on execution of data-race-free programs. We find that thread synchronization is the prevalent...
Clojure is a Lisp language designed to run on a Java Virtual Machine (JVM) and interoperate automatically with all Java libraries. However, compared to Java, Clojure has a concurrency API that encourages programmers to take advantage of multicore architectures through multithreading, but Clojure doesn't burden programmers with low-level thread-coordination tasks.
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