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Michal Kapalka

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Publications associées (25)

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On the liveness of transactional memory

Rachid Guerraoui, Michal Kapalka, Victor Bushkov

Despite the large amount of work on Transactional Memory (TM), little is known about how much liveness it could provide. This paper presents the first formal treatment of the question. We prove that no TM implementation can ensure local progress, the analo ...

ACM Press2012

On the Liveness of Transactional Memory

Rachid Guerraoui, Michal Kapalka, Victor Bushkov

2011

Leveraging Parallel Nesting in Transactional Memory

Rachid Guerraoui, Michal Kapalka, Aleksandar Dragojevic

Exploiting the emerging reality of affordable multi-core architectures goes through providing programmers with simple abstractions that would enable them to easily turn their sequential programs into concurrent ones that expose as much parallelism as possi ...

ACM2010

Theory of Transactional Memory

Michal Kapalka

Transactional memory (TM) is a promising paradigm for concurrent programming, in which threads of an application communicate, and synchronize their actions, via inmemory transactions. Each transaction can perform any number of operations on shared data, an ...

EPFL2010

The VELOX Transactional Memory Stack

Rachid Guerraoui, Vincent Gramoli, Michal Kapalka, Aleksandar Dragojevic, Pascal Felber

The adoption of multi- and many-core architectures for mainstream computing undoubtedly brings profound changes in the way software is developed. In particular, the use of fine grained locking as the multi-core programmer’s coordination methodology is cons ...

Institute of Electrical and Electronics Engineers2010

Transactions in the Jungle

Rachid Guerraoui, Michal Kapalka, Vasu Singh

Transactional memory (TM) has shown potential to simplify the task of writing concurrent programs. Inspired by classical work on databases, formal definitions of the semantics of TM executions have been proposed. Many of these definitions assumed that acce ...

Acm Order Department2010

The Semantics of Progress in Lock-Based Transactional Memory

Rachid Guerraoui, Michal Kapalka

Transactional memory (TM) is a promising paradigm for concurrent programming. Whereas the number of TM implementations is growing, however, little research has been conducted to precisely define TM semantics, especially their progress guarantees. This pape ...

ACM2009

Transactional Memory: Glimmer of a Theory

Rachid Guerraoui, Michal Kapalka

Transactional memory (TM) is a promising paradigm for concurrent programming. This paper is an overview of our recent theoretical work on defining a theory of TM. We first recall some TM correctness properties and then overview results on the inherent powe ...

ACM2009

The Theory of Transactional Memory

Rachid Guerraoui, Michal Kapalka

Transactional memory (TM) is a promising paradigm for concurrent programming. This paper is an overview of our recent work on defining a theory of TM. We first present a correctness condition of a TM, ensured by most existing TM implementations. Then, we d ...

2009

How Live Can a Transactional Memory Be?

Rachid Guerraoui, Michal Kapalka

This paper asks how much liveness a transactional memory (TM) implementation can guarantee. We first devise a formal framework for reasoning about liveness properties of TMs. Then, we prove that the strongest liveness property that a TM can ensure in an as ...

2009