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Reliability Analysis of Data Storage Systems

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Time- and Space-Efficient Spatial Data Analytics

Mirjana Pavlovic

Advances in data acquisition technologies and supercomputing for large-scale simulations have led to an exponential growth in the volume of spatial data. This growth is accompanied by an increase in data complexity, such as spatial density, but also by mor ...

EPFL2019

Managing Tail Latency in Datacenter-Scale File Systems Under Production Constraints

Willy Zwaenepoel, Ricardo Bianchini, Maria Fernanda Borge Chavez

Distributed file systems often exhibit high tail latencies, especially in large-scale datacenters and in the presence of competing (and possibly higher priority) workloads. This paper introduces techniques for managing tail latencies in these systems, whil ...

ASSOC COMPUTING MACHINERY2019

Contact process under renewals I

We investigate a non-Markovian analogue of the Harris contact process in Z(d): an individual is attached to each site x is an element of Z(d), and it can be infected or healthy; the infection propagates to healthy neighbours just as in the usual contact pr ...

ELSEVIER SCIENCE BV2019

Caching and Distributed Storage

Saeid Sahraei

A simple task of storing a database or transferring it to a different point via a communication channel turns far more complex as the size of the database grows large. Limited bandwidth available for transmission plays a central role in this predicament. I ...

EPFL2018

Distributed Transactions: Dissecting the Nightmare

Rachid Guerraoui, Willy Zwaenepoel, Diego Didona, Junxiong Wang

Many distributed storage systems are transactional and a lot of work has been devoted to optimizing their performance, especially the performance of read-only transactions that are considered the most frequent in practice. Yet, the results obtained so far ...

2018

Reconstruction and simulation of neocortical microcircuitry

Henry Markram, Sean Lewis Hill, Eilif Benjamin Muller

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for reconstructing and simulating neocortical microcircuitry. In one aspect, a method includes providing a model of neural tissue, the model including differ ...

2018

Secure Storage with Replication and Transparent Deduplication

Iraklis Leontiadis

We seek to answer the following question: To what extent can we deduplicate replicated storage ? To answer this question, we design ReDup, a secure storage system that provides users with strong integrity, reliability, and transparency guarantees about dat ...

2018

Storage Efficient Substring Searchable Symmetric Encryption

Iraklis Leontiadis, Ming Li

We address the problem of substring searchable encryption. A single user produces a big stream of data and later on wants to learn the positions in the string that some patterns occur. Although current techniques exploit auxiliary data structures to achiev ...

2018

Storage Efficient Substring Searchable Symmetric Encryption

Iraklis Leontiadis, Ming Li

ASSOC COMPUTING MACHINERY2018

Overcoming the time-bandwidth limit

Camille Sophie Brès, Kosmas Tsakmakidis, Simon Julien Fabbri

We are so accustomed to the time-bandwidth limit that we often take it to be a fundamental relation that cannot be overcome. Contrary to this belief we here propose that the storage/delay time of a system can in fact be decoupled from the operating bandwid ...

IEEE2018