Universidade de Coimbra

Displaying 1-4 of 4 results

  • White Papers // Jan 2013

    The TClouds Architecture: Open and Resilient Cloud-of-Clouds Computing

    In this paper, the authors give a preliminary overview of the TClouds architecture, which is devoted to providing incrementally high levels of security and dependability to cloud infrastructures, in an open, modular and versatile way, based on the cloud-of-clouds paradigm. The TClouds architecture serves these objectives essentially by re-using and...

    Provided By Universidade de Coimbra

  • White Papers // Jul 2011

    Architecture, Mechanisms and Scheduling Analysis Tool for Multicore Time- and Space-Partitioned Systems

    Time- and Space-Partitioned systems (TSP) are a current trend in aerospace. They are employed to integrate a heterogeneous set of functions (different criticalities, real-time requirements, and origins) in a shared computing platform, fulfilling individual partitions' and global real-time properties. Applications are separated into logical partitions, scheduled according to predefined Partition...

    Provided By Universidade de Coimbra

  • White Papers // May 2011

    Recursive Virtual Machines for Advanced Security Mechanisms

    Virtualization contributes to the optimization and modularization of resource usage in a machine. Furthermore, many systems have relied on a virtualization layer to provide extra security functionality. Both features rank amongst the most important of the technological capabilities enabling cloud computing, improving performance and security. The availability of hardware support...

    Provided By Universidade de Coimbra

  • White Papers // Sep 2010

    Active Quorum Systems

    This paper outlines a flexible suite of object replication protocols that brings together Byzantine quorum systems registers and state machine replication. These protocols enable the implementation of Byzantine fault-tolerant applications that make minimal assumptions about the environment and that run in at most two more communication steps in almost all...

    Provided By Universidade de Coimbra

  • White Papers // Jul 2011

    Architecture, Mechanisms and Scheduling Analysis Tool for Multicore Time- and Space-Partitioned Systems

    Time- and Space-Partitioned systems (TSP) are a current trend in aerospace. They are employed to integrate a heterogeneous set of functions (different criticalities, real-time requirements, and origins) in a shared computing platform, fulfilling individual partitions' and global real-time properties. Applications are separated into logical partitions, scheduled according to predefined Partition...

    Provided By Universidade de Coimbra

  • White Papers // Jan 2013

    The TClouds Architecture: Open and Resilient Cloud-of-Clouds Computing

    In this paper, the authors give a preliminary overview of the TClouds architecture, which is devoted to providing incrementally high levels of security and dependability to cloud infrastructures, in an open, modular and versatile way, based on the cloud-of-clouds paradigm. The TClouds architecture serves these objectives essentially by re-using and...

    Provided By Universidade de Coimbra

  • White Papers // May 2011

    Recursive Virtual Machines for Advanced Security Mechanisms

    Virtualization contributes to the optimization and modularization of resource usage in a machine. Furthermore, many systems have relied on a virtualization layer to provide extra security functionality. Both features rank amongst the most important of the technological capabilities enabling cloud computing, improving performance and security. The availability of hardware support...

    Provided By Universidade de Coimbra

  • White Papers // Sep 2010

    Active Quorum Systems

    This paper outlines a flexible suite of object replication protocols that brings together Byzantine quorum systems registers and state machine replication. These protocols enable the implementation of Byzantine fault-tolerant applications that make minimal assumptions about the environment and that run in at most two more communication steps in almost all...

    Provided By Universidade de Coimbra