NDLI: Scaling MPI to short-memory MPPs such as BG/L

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Scaling MPI to short-memory MPPs such as BG/L

Content Provider	ACM Digital Library
Author	Farreras, M. Cortes, T. Almasi, G. Labarta, J.
Abstract	Scalability to large number of processes is one of the weaknesses of current MPI implementations. Standard implementations are able to scale to hundreds of nodes, but not beyond. The main problem in these implementations is that they assume some resources (for both data and control-data) will always be available to receive/process unexpected messages. As we will show, this is not always true, especially in short-memory machines like the BG/L that has 64K nodes but each node only has 512Mbytes of memory.The objective of this paper is to present one algorithm that improves the robustness of MPI implementations for short-memory MPPs, taking care of data and control-data reception, the system will scale up to any number of nodes. The proposed solution achieves this goal without any observable overhead when there are no memory problems. Furthermore, in the worst case, when memory resources are extremely scarce, the overhead will never double the execution time (and we should never forget that in this extreme situation, traditional MPI implementations would fail to execute).
Starting Page	209
Ending Page	218
Page Count	10
File Format	PDF
ISBN	1595932828
DOI	10.1145/1183401.1183432
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2006-06-28
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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

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