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Software applications are increasingly desirable to adapt to varying execution environments and diverse user requirements to support runtime adaptation. Behavioral variations are generally modularized to handle variability. Depending on activating or deactivating relevant variations dynamically due to continuous context changes, a required behavioral variant specific to contexts is subsequently generated...
To verify system-wide properties on SoC designs in Constrained Random Verification (CRV), the default set of constraints to generate patterns could be overridden frequently through the complex testbench. It usually results in the degradation of pattern generation speed because of low hit-rate problems. In this paper, we propose a technique to preprocess the solution space under each constraint set...
Speculative Multithreading (SpMT) approaches have gained wide popularity because they can get more parallelism by allowing two pieces of potentially conflicting code to execute in parallel while ensuring the correctness of the results by recovering from conflicts. However, the dividing-along-the-control-flow-path method employed by the traditional SpMT approach is unsuitable for a number of programs...
Constrained random verification (CRV) methodology has been identified as an efficient solution to functional verification challenges. In practical cases, it is required to implement constraints with variable ordering to put essential efforts on cared patterns. However, handling constraints with variable ordering may encounter performance degradation of pattern generation speed and distribution. To...
Functional rectification in late design stages has been a crucial process in modern complex system design. This paper proposes a robust functional ECO engine, which applies SAT proof minimization and interpolation techniques to automate patch construction to make old implementation and golden specification functionally equivalent. The SAT proof minimization technique provides a sound and efficient...
This paper proposes a new speculative multithreading execution model which is suitable for object-oriented programs. Using this model, sequential object oriented programs are partitioned into multiple speculative object threads according to their structure and semantics by cooperated compiler and runtime system. Object threads as the basic units of parallel target code are mapped onto thread units...
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