Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 444 for “"I/O"”.
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Improving Virtual Machine I/O Performance in Cloud Environments via I/O Functionality Offloading
<p>In recent years there has been a rapid growth in the adoption of cloud computing. A key technology that drives cloud computing is virtualization. In addition to enabling multi-tenancy in cloud environments, virtualizing hosts in the cloud environments has made management of hardware resources …
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Simulation of composite I/O automata
The IOA simulator is a tool that has been developed in the Theory of Distributed Systems group at MIT. This tool simulates the execution of automata described by the IOA language. It generates logs of execution traces and provides other pertinent information regarding the execution, such as the …
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Portable fault-tolerant file I/O
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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Paired simulation of I/O automata
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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Parallel I/O on Compressed Data Files
The increase in processing power of modern computing hardware has not been accompanied by a proportional increase in the performance of storage technology leading to an imbalance in cluster and parallel computing architectures where input-output (I/O) operations may bottleneck the overall …
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Verifying an I/O-concurrent file system
Systems software is a good target for verification due to its prevalent usage and its complexity, which can lead to tricky bugs that are hard to test for. One source of complexity in systems software is concurrency, but thus far verification techniques have struggled to enable large-scale …
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Optimizing parallel I/O performance of HPC applications
Parallel I/O is an essential component of modern High Performance Computing (HPC). Obtaining good I/O performance for a broad range of applications on diverse HPC platforms is a major challenge, in part because of complex inter-dependencies between I/O middleware and hardware. The parallel file …
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Measurement-Based Characterization of Parallel I/O Systems
This research addresses the issue of evaluating the performance of parallel I/O subsystems for a variety of I/O intensive workloads on massively parallel systems. First, a model-based workload specification methodology for generating parallel I/O intensive workloads is described. Second, a …
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Hiding Periodic I/O Costs in Parallel Applications
We evaluated our proposed I/O optimizations, namely active buffering and the GODIVA framework, with both synthetic benchmarks and real-world applications, including simulations and visualization tools. The performance study shows that our proposed techniques can significantly reduce the …
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Disk I/O in High-Performance Computing Systems
There exists an increasing disparity between the performance of high-performance computers and disk I/O systems. This divergence in performance signifies that the I/O system will become an increasing bottleneck in future computer systems. With such a bottleneck, a program's execution time on these …
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Measurement and evaluation of multimedia I/O performance
I/O is becoming the bottleneck in computer systems as the disparity between the speed of the I/O system and the CPU continues to grow. This research addresses the performance evaluation of I/O, with special emphasis on multimedia workstation-class systems. First, multimedia I/O activity is shown to …
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The I/O bulb and the luminous room
We introduce a new device called the I/O Bulb, an evolution of the common lightbulb capable of emitting structured light and performing simultaneous optical capture. This basic notion is extended to suggest an architecture called the Luminous Room, in which every portion of an enclosed space is …
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Formal verification of simulations between I/O automata
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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A parallel file I/O API for Clik
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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I/O embedding and broadcasting in star interconnection networks
The issues of communication between a host or central controller and processors, in large interconnection networks are very important and have been studied in the past by several researchers. There is a plethora of problems that arise when processors are asked to exchange information on parallel …
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Understanding tetratricopeptide repeats of <i>O</i>-GlcNAc transferase
The modification of serine and threonine residues of intracellular proteins with O-linked N-acetyl-β-D-glucosamine (O-GlcNAc) was serendipitously discovered in 1984. During the following decades it became clear that intracellular O-GlcNAc levels respond to various stimuli, suggesting that this …
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Design of energy efficient high speed I/O interfaces
The student, Mrunmay Vyankatesh Talegaonkar, accepted the attached license on 2016-03-11 at 14:21.
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Machine learning for selecting parallel I/O benchmark applications
I/O is one of the main performance bottlenecks for many data-intensive scientific applications. Accurate I/O performance benchmarking, which can help us better understand the causes of these bottlenecks and to guide the performance optimization of poor performing applications, is therefore an …
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Verifiable compilation of I/O automata without global synchronization
Part I of this thesis presents a strategy for compiling distributed systems specified in IOA into Java programs running on a group of networked workstations. IOA is a formal language for describing distributed systems as I/O automata. The translation works node-by-node, translating IOA programs …
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