Observation probability • Probability to observe Yo(fk,tm) given tempo bi and RST mj 1) Compute the Yo(l,tm,bi) corresponding to the assumption bi 2) Select the mj which have a reference tempo Bj close to bi: (abs(log2(bi/Bj))<0.3785 3) Compute the one-minus cosine distance between Yo(l,tm,b) and mj=Yj(l) Template-Based Estimation of Tempo: Using Unsupervised or Supervised Learning to create be...

Hardware TM systems execute user code within an atomic{} delimiter without any instrumentation. Software transactional memory systems require complex sequences of operations to be executed on the memory locations shared by transactions, but typically not on unshared locations, even if these are accessed within the scope of a transaction. Lack of identification of such instructions introduces a ...

Composing together the individual atomic methods of concurrent data-structures (cds) pose multiple design and consistency challenges. In this context composition provided by transactions in software transaction memory (STM) can be handy. However, most of the STMs offer read/write primitives to access shared cds. These read/write primitives result in unnecessary aborts. Instead, semantically ric...

In order to scale to large multiprocessors or clusters, transactional memories must reduce reliance on synchronisation. Therefore, we consider two favorable formal properties, namely Snapshot Isolation (SI, by which read-only transactions commit without synchronisation), and Genuine Partial Replication (GPR, by which a processor synchronises for a transaction only if it maintains a copy of some...

We present PermiSTM, a single-version STM that satisfies a practical notion of permissiveness, usually associated with keeping many versions: it never aborts read-only transactions, and it aborts other transactions only due to a conflicting transaction (which writes to a common item), thereby avoiding spurious aborts. It avoids unnecessary contention on the memory, being strictly disjoint-

Over the last years, a wide body of literature has been developed in the area of Software Transactional Memory (STM) systems and, recently, the first STM-based applications have started to be deployed in production systems [1]. One of the key lessons learnt from the development and deployment of these applications is that existing STM platforms suffer from a significant limitation: the lack of ...

A piezoelectric tube of the type typically used for actuation in Scanning Tunneling Microscopes (STMs) and Atomic Force Microscopes (AFMs) is considered. Actuation of this piezoelectric tube is hampered by the presence of a lightly damped low frequency resonant mode. This resonant mode is first identified and then damped using a Positive Velocity and Position Feedback (PVPF) controller, a contr...

A Dynamic Instrumentation Approach to Software Transactional Memory Marek Olszewski Master of Applied Science Graduate Department of Electrical and Computer Engineering University of Toronto 2007 With the advent of chip-multiprocessors, we are faced with the challenge of parallelizing performance-critical software. Transactional memory has been proposed as a promising programming model, with so...