Distributed Computing and Networking: 13th International by Marin Bertier, Marko Obrovac, Cédric Tedeschi (auth.),

By Marin Bertier, Marko Obrovac, Cédric Tedeschi (auth.), Luciano Bononi, Ajoy K. Datta, Stéphane Devismes, Archan Misra (eds.)

This ebook constitutes the refereed court cases of the thirteenth foreign convention on allotted Computing and Networking, ICDCN 2012, held in Hong Kong, China, in the course of January 3-6, 2012.
The 36 revised complete papers and 1 brief paper offered including four poster papers have been conscientiously reviewed and chosen from a hundred submissions. The papers tackle all present matters within the box of disbursed computing and networking. Being a number one discussion board for researchers and practitioners to switch rules and percentage top practices, ICDCN additionally hosts as a discussion board for PhD scholars to debate their learn principles and get caliber suggestions from the well-renowned specialists within the box of allotted computing and laptop networking.

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Distributed Computing and Networking: 13th International Conference, ICDCN 2012, Hong Kong, China, January 3-6, 2012. Proceedings

This booklet constitutes the refereed court cases of the thirteenth foreign convention on allotted Computing and Networking, ICDCN 2012, held in Hong Kong, China, in the course of January 3-6, 2012. The 36 revised complete papers and 1 brief paper provided including four poster papers have been conscientiously reviewed and chosen from a hundred submissions.

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Extra resources for Distributed Computing and Networking: 13th International Conference, ICDCN 2012, Hong Kong, China, January 3-6, 2012. Proceedings

Example text

When a thread publishes (a part of) its private memory, it copies the data to a new location in the processor’s local memory. That means, unlike with a traditional cache, updates do not overwrite the main memory but create new object versions. So far, our system is implemented as a run-time system on top of existing processor architectures; but we envisage that the described copying is a transparent background activity whenever the memory bus is idle. When the thread hits an induced scheduling boundary, the thread’s entire private memory is written back to local memory.

More precisely, a committing transaction flushes its private memory to local memory; then it proceeds tentatively while the system tries to establish consistency on shared objects. Thereby, we avoid having to stall the thread. In practice, flushing the private memory can also be quite fast because we can assume that the processor transparently copies dirty lines of private memory into its local memory whenever the memory bus is idle. We believe that this system model is powerful because it combines several useful aspects: Shared memory systems are convenient for many software developers, but they are increasingly hard to implement in modern many-core processors because the bandwidth between the processor cores and the main memory is limited and hardware cache coherence protocols are expensive both with respect to energy and die area.

Further, by construction the following lemma holds: Lemma 2. If an operation p reads an invisible local version Wloc (p ), then p and p belong to the same LS block. Combining these observations, it follows that inserting the memory boundaries between the LS blocks is consistent regarding the JMM as each LS block operates on a consistent snapshot of the globally shared state. For the following discussion, we want to point out that the system generates for each object a designated initial version which corresponds to the initial object required by the JVM.

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