Publications de Nachshon Cohen

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Fine-Grain Checkpointing with In-Cache-Line Logging

James Richard Larus, David Teksen Aksun, Nachshon Cohen

Non-Volatile Memory offers the possibility of implementing high-performance, durable data structures. However, achieving performance comparable to well-designed data structures in non-persistent (transient) memory is difficult, primarily because of the cos ...

ACM2019

OneFile: A Wait-free Persistent Transactional Memory

Nachshon Cohen, Pascal Felber

A persistent transactional memory (PTM) library provides an easy-to-use interface to programmers for using byte-addressable non-volatile memory (NVM). Previously proposed PTMs have, so far, been blocking. We present OneFile, the first wait-free PTM with in ...

IEEE COMPUTER SOC2019

Object-Oriented Recovery for Non-volatile Memory

James Richard Larus, David Teksen Aksun, Nachshon Cohen

New non-volatile memory (NVM) technologies enable direct, durable storage of data in an application's heap. Durable, randomly accessible memory facilitates the construction of applications that do not lose data at system shutdown or power failure. Existing ...

ACM2018

The Inherent Cost of Remembering Consistently

Rachid Guerraoui, Mihail Igor Zablotchi, Nachshon Cohen

Non-volatile memory (NVM) promises fast, byte-addressable and durable storage, with raw access latencies in the same order of magnitude as DRAM. But in order to take advantage of the durability of NVM, programmers need to design persistent objects which ma ...

2018

The Inherent Cost of Remembering Consistently

Rachid Guerraoui, Mihail Igor Zablotchi, Nachshon Cohen

2018

Approximating Steiner trees and forests with minimum number of Steiner points

Nachshon Cohen

Let R be a finite set of terminals in a convex metric space (M, d). We give approximation algorithms for problems of finding a minimum size set S subset of M of additional points such that the unit-disc graph G[R boolean OR S] of R boolean OR S satisfies s ...

ACADEMIC PRESS INC ELSEVIER SCIENCE2018

Efficient Logging in Non-Volatile Memory by Exploiting Coherency Protocols

James Richard Larus, Nachshon Cohen

Non-volatile memory (NVM) technologies such as PCM, ReRAM and STT-RAM allow processors to directly write values to persistent storage at speeds that are significantly faster than previous durable media such as hard drives or SSDs. Many applications of NVM ...

ACM2017

Limitations of Partial Compaction: Towards Practical Bounds

Nachshon Cohen

Compaction of a managed heap is a costly operation to be avoided as much as possible in commercial runtimes. Instead, partial compaction is often used to defragment parts of the heap and avoid space blowup. Previous study of compaction limitation provided ...

Assoc Computing Machinery2017

Nachshon Cohen

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Fine-Grain Checkpointing with In-Cache-Line Logging

OneFile: A Wait-free Persistent Transactional Memory

Object-Oriented Recovery for Non-volatile Memory

The Inherent Cost of Remembering Consistently

The Inherent Cost of Remembering Consistently

Every data structure deserves lock-free memory reclamation

Approximating Steiner trees and forests with minimum number of Steiner points

A GPU-Friendly Skiplist Algorithm

Efficient Logging in Non-Volatile Memory by Exploiting Coherency Protocols

Limitations of Partial Compaction: Towards Practical Bounds

OneFile: A Wait-free Persistent Transactional Memory

The Inherent Cost of Remembering Consistently

The Inherent Cost of Remembering Consistently

Object-Oriented Recovery for Non-volatile Memory

Every data structure deserves lock-free memory reclamation

Approximating Steiner trees and forests with minimum number of Steiner points

A GPU-Friendly Skiplist Algorithm

Limitations of Partial Compaction: Towards Practical Bounds

Efficient Logging in Non-Volatile Memory by Exploiting Coherency Protocols

Fine-Grain Checkpointing with In-Cache-Line Logging