NDLI: Transparently consistent asynchronous shared memory

Please wait, while we are loading the content...

Hobbes: composition and virtualization as the foundations of an extreme-scale OS/R

Memory-conscious collective I/O for extreme scale HPC systems

An early prototype of an autonomic performance environment for exascale

Characteristics of adaptive runtime systems in HPC

A gossip-based approach to exascale system services

Transparently consistent asynchronous shared memory

Design and implementation of a customizable work stealing scheduler

Enabling accurate power profiling of HPC applications on exascale systems

Evaluating the feasibility of using memory content similarity to improve system resilience

Data deduplication in a hybrid architecture for improving write performance

Transparently consistent asynchronous shared memory

Content Provider	ACM Digital Library
Author	Akkan, Hakan Ionkov, Latchesar Lang, Michael
Abstract	The advent of many-core processors is imposing many changes on the operating system. The resources that are under contention have changed; previously, CPU cycles were the resource in demand and required fair and precise sharing. Now compute cycles are plentiful, but the memory per core is decreasing. In the past, scientific applications used all the CPU cores to finish as fast as possible, with visualization and analysis of the data performed after the simulation finished. With decreasing memory available per core, as well as the higher price (in power and time) for storing data on disk or sending it over the network, it now makes sense to run visualization and analytics applications in-situ, while the application is running. Visualization and analytics applications then need to sample the simulation memory with as little interference and as little changes in the simulation code as possible. We propose an asynchronous memory sharing facility that allows consistent states of the memory to be shared between processes without any implicit or explicit synchronization. We distinguish two types of processes; a single producer and one or more observers. The producer modifies the state of the data, making available consistent versions of the state to any observer. The observers, working at different sampling rates, can access the latest available consistent state. Some applications that would benefit from this type of facility include check-pointing applications, processes monitoring, unobtrusive process debugging, and the sharing of data for visualization or analytics. To evaluate our ideas we have developed two kernel-level implementations for sharing data asynchronously and we compared these implementations to a traditional user-space synchronized multi-buffer method. We have seen improvements of up to 3.5x in our tests over the traditional multi-buffer method with 20% of the data pages touched.
Starting Page	1
Ending Page	6
Page Count	6
File Format	PDF
ISBN	9781450321464
DOI	10.1145/2491661.2481431
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2013-06-10
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Memory management Virtual memory Copy on write Memory sharing
Content Type	Text
Resource Type	Article

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in