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Secure Interface Design Leveraging Hardware/Software Support

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Lazy Asynchronous I/O for Event-Driven Servers

Willy Zwaenepoel

In this paper , we introduce Lazy Asynchronous I/O (LAIO),a new API for performing I/O that is well-suited but not limited to the needs of high-performance, event-driven servers. In addition, we describe and evaluate an implementation of LAIO that demonstr ...

2004

Evolution of the Mental States Operating a Brain-Computer Interface

José del Rocio Millán Ruiz, Silvia Chiappa

This study analyses the location of patterns of brain activity in the signal space while a human subject is trained to operate a brain-computer interface. This evaluation plays an important role in the understanding of the underlying system, and it gives v ...

2002

Evolution not revolution in the TCV tokamak control and acquisition system

Basil Duval, Jean-Marc Moret, Xavier Llobet, Jonathan Bryan Lister, Philippe Marmillod, Blaise Marlétaz, Pierre-François Isoz

The original TCV control system was designed in the late 1980s to be inherently network based in that all control operations were performed from X-windows terminals and the control computers were networked. Using VMS-VAX technology, the acquisition system ...

2001

Address partitioning in DSM clusters with parallel coherence controllers

Babak Falsafi

Recent research suggests that DSM clusters can benefit from parallel coherence controllers. Parallel controllers requires address partitioning and synchronization to avoid handling multiple coherence events for the same memory address simultaneously. This ...

2000

Shared Recoverable Objects

Jörg Kienzle

This document describes an implementation of recoverable objects that can be accessed concurrently. After a brief description of the possible uses of recoverable objects and after reviewing some of the new features of Ada 95 used in the implementation, the ...

1999

Computer-aided parallelization of continuous media applications: The 4D beating heart slice server

Roger Hersch

Parallel servers for I/O and compute intensive continuous media applications are difficult to develop. A server application comprises many threads located in different address spaces as well as files striped over multiple disks located on different compute ...

ACM, New York, NY, USA1999

Distributed run-time visualization and solution steering of parallel flow simulations

Mark Sawley

A run-time visualization and solution-steering tool, TPview, has been developed to overcome difficulties commonly encountered with large-scale numerical simulations on high-performance parallel computer systems. TPview provides the interface between the pa ...

1998

Vassal: Loadable Scheduler Support for Multi-Policy Scheduling

George Candea

This paper presents Vassal, a system that enables applications to dynamically load and unload CPU scheduling policies into the operating system kernel, allowing multiple policies to be in effect simultaneously. With Vassal, applications can utilize schedul ...

1998

Extensible kernels are leading OS researchers astray

Willy Zwaenepoel

We argue that ongoing research in extensible kernels largely fails to address the real challenges facing the OS community. Instead, these efforts have become entangled in trying to solve the safety problems that extensibility itself introduces into OS desi ...

1997

Continuous Profiling: Where Have All the Cycles Gone?

Monika Henzinger

This article describes the Digital Continuous Profiling Infrastructure, a sampling-based profiling system designed to run continuously on production systems. The system supports multiprocessors, works on unmodified executables, and collects profiles for en ...

1997