27 research outputs found
Tarmo: A Framework for Parallelized Bounded Model Checking
This paper investigates approaches to parallelizing Bounded Model Checking
(BMC) for shared memory environments as well as for clusters of workstations.
We present a generic framework for parallelized BMC named Tarmo. Our framework
can be used with any incremental SAT encoding for BMC but for the results in
this paper we use only the current state-of-the-art encoding for full PLTL.
Using this encoding allows us to check both safety and liveness properties,
contrary to an earlier work on distributing BMC that is limited to safety
properties only.
Despite our focus on BMC after it has been translated to SAT, existing
distributed SAT solvers are not well suited for our application. This is
because solving a BMC problem is not solving a set of independent SAT instances
but rather involves solving multiple related SAT instances, encoded
incrementally, where the satisfiability of each instance corresponds to the
existence of a counterexample of a specific length. Our framework includes a
generic architecture for a shared clause database that allows easy clause
sharing between SAT solver threads solving various such instances.
We present extensive experimental results obtained with multiple variants of
our Tarmo implementation. Our shared memory variants have a significantly
better performance than conventional single threaded approaches, which is a
result that many users can benefit from as multi-core and multi-processor
technology is widely available. Furthermore we demonstrate that our framework
can be deployed in a typical cluster of workstations, where several multi-core
machines are connected by a network
Ihmiselon kirjuus ja kertomuksentutkimuksen parsainen käänne
Abstract
The study of literary content beyond the literary medium or the meaning-bearing book artifact has long since proven to be an inadequate approach — it is, as they say, so last season. The book is the new black (or green) and the full spectrum of bookiness has been the object of fervent study in literary research for several years now (cf. Keskinen 2017, 2018). However, never before has bookiness been evoked from the culinary perspective, even if the so called aspartic turn has been clearly visible, especially in leading Finnish literary research (ibid.). This article tackles the bookiness of literature with the tasty idea of focusing on an interview video telling of the literary in life
The effect of processing and storage on the content of isolated flaxseed lignan added in yoghurt
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Effect of processing and storage on the stability of flaxseed lignan added to bakery products
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