Concept

Write amplification

Related publications (40)

Controlled creation and displacement of charged domain walls in ferroelectric thin films

Nava Setter, Tomas Sluka, Silviu Cosmin Sandu, Ludwig Feigl, Arnaud Robert André Crassous

Charged domain walls in ferroelectric materials are of high interest due to their potential use in nanoelectronic devices. While previous approaches have utilized complex scanning probe techniques or frustrative poling here we show the creation of charged ...

Nature Publishing Group2016

Online Updates on Data Warehouses via Judicious Use of Solid-State Storage

Anastasia Ailamaki, Manoussos Gavriil Athanassoulis, Radu Ioan Stoica

Data warehouses have been traditionally optimized for read-only query performance, allowing only offline updates at night, essentially trading off data freshness for performance. The need for 24x7 operations in global markets and the rise of online and oth ...

Assoc Computing Machinery2015

Libra: Software-Controlled Cell Bit-Density to Balance Wear in NAND Flash

Paolo Ienne, David Novo Bruna, Xavier Jimenez

Hybrid flash storages combine a small Single-Level Cell (SLC) partition with a large Multilevel Cell (MLC) partition. Compared to MLC-only solutions, the SLC partition exploits fast and short local write updates, while the MLC part brings large capacity. O ...

Assoc Computing Machinery2015

Re-writing scheme for solid-state storage devices

Mohammad Amin Shokrollahi, Yuval Cassuto, Luoming Zhang

A multi-level cell flash memory storage device has cells wherein different charge levels represent different information. The storage device can read stored charge from one or more cells, store a rewrite generation value for a group of a plurality of cells ...

2014

High Sum-Rate Three-Write and Nonbinary WOM Codes

Write-once memory (WOM) is a storage medium with memory elements, called cells, which can take on q levels. Each cell is initially in level 0 and can only increase its level. A t-write WOM code is a coding scheme, which allows one to store t messages to th ...

Institute of Electrical and Electronics Engineers2014

Differential vector storage for non-volatile memory

Mohammad Amin Shokrollahi

A method is disclosed for storing information on non-volatile memory which can rewrite memory cells multiple times before a block needs to be erased. The information to be stored is transformed into a suitable form which has better robustness properties wi ...

2014

Rebasing I/O for Scientific Computing: Leveraging Storage Class Memory in an IBM BlueGene/Q Supercomputer

Felix Schürmann, Pramod Shivaji Kumbhar, Miguel Angel Gila Arrondo, Davide Tacchella, Alessandro Curioni, Fabien Jonathan Delalondre, John Anthony Biddiscombe, Peter Morjan, Blake Fitch, Bernard Metzler, Lars Schneidenbach, Robert Germain

Storage class memory is receiving increasing attention for use in HPC systems for the acceleration of intensive IO operations. We report a particular instance using SLC FLASH memory integrated with an IBM BlueGene/Q supercomputer at scale (Blue Gene Active ...

Springer2014

Solid-State Storage and Work Sharing for Efficient Scaleup Data Analytics

Manoussos Gavriil Athanassoulis

Today, managing, storing and analyzing data continuously in order to gain additional insight is becoming commonplace. Data analytics engines have been traditionally optimized for read-only queries assuming that the main data reside on mechanical disks. The ...

EPFL2014

Critical issues in using the common mixture toxicity models concentration addition or response addition on species sensitivity distributions: A theoretical approach

Vincent Gregorio

The risk of chemical mixtures to ecosystems is often assessed by applying the model of concentration addition or response addition combined with species sensitivity distribution (SSD) curves. Mixture effect predictions have been shown to be consistent only ...

Society of Environmental Toxicology and Chemistry Press2013

Querying Persistent Graphs using Solid State Storage

Manoussos Gavriil Athanassoulis

Recent advances in solid state technology have led to the introduction of Solid State Drives (SSDs). Todays SSDs store data persistently using NAND flash memory. While SSDs are more expensive than hard disks when measured in dollars per gigabyte, they are ...

2013

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