We present in this paper a deterministic silence and self stabilizing leader election algorithm on unidirectional id based rings which have a bound on their id values The id values of proces sors in a ring whose size is N have to be inferior to N k The size of communication registers required by the algorithm is constant The algorithm stabilizes in k N time keywords self stabilization leader el...

An atomic snapshot object is an object that can be concurrently accessed by asynchronous processes prone to crash. It is made of m components (base atomic registers) and is defined by two operations: an update operation that allows a process to atomically assign a new value to a component and a snapshot operation that atomically reads and returns the values of all the components. To cope with t...

Erlang is a concurrent functional language, tailored for large-scale distributed and fault-tolerant control software. Its primary implementation is Ericsson’s Erlang/OTP system, which is based on a virtual machine interpreter. HiPE (High-Performance Erlang) adds a native code execution mode to the Erlang/OTP system. This paper describes the x86 version of HiPE, including a detailed account of d...

We consider simple compiler optimisations for removing redundant memory fences in programs running on top of the x86-TSO relaxed memory model. While the optimisations are performed using standard thread-local control flow analyses, their correctness is subtle and relies on a non-standard global simulation argument. The implementation and the proof of correctness are programmed in Coq as part of...