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Title: Active/Active Replication for Highly Availalbe HPC System Services

Abstract

High performance computing (HPC) exploits multi-processor parallelism on a large scale in order to enable research in computational sciences in various areas, such as nanotechnology, quantum chemistry, nuclear fusion and astrophysics. Simulations of real-world problems using mathematical abstraction models allow scientists to gain knowledge without the need or the capability to perform physical experiments. Today's high performance computing systems have several reliability deficiencies resulting in availability and serviceability issues. Head and service nodes represent a single point of failure and control for an entire system as they render it inaccessible and unmanageable in case of a failure until repair, causing a significant downtime. This paper introduces two distinct replication methods (internal and external) for providing symmetric active/active high availability for multiple head and service nodes running in virtual synchrony. It presents a comparison of both methods in terms of expected correctness, ease-of-use and performance based on early results from ongoing work in providing symmetric active/active high availability for two HPC system services (TORQUE and PVFS metadata server). It continues with a short description of a distributed mutual exclusion algorithm and a brief statement regarding the handling of Byzantine failures. This paper concludes with an overview of past and ongoing work,more » and a short summary of the presented research.« less

Authors:
 [1];  [1];  [1];  [2]
  1. ORNL
  2. Tennessee Technological University
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Center for Computational Sciences
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1003410
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: International Symposium on Frontiers in Availability, Reliability and Security (FARES) 2006, Vienna, Austria, 20060420, 20060422
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ALGORITHMS; ASTROPHYSICS; AVAILABILITY; CHEMISTRY; PERFORMANCE; RELIABILITY; REPAIR; SECURITY; TORQUE

Citation Formats

Engelmann, Christian, Scott, Steven L, Leangsuksun, Chokchai, and He, X. Active/Active Replication for Highly Availalbe HPC System Services. United States: N. p., 2006. Web.
Engelmann, Christian, Scott, Steven L, Leangsuksun, Chokchai, & He, X. Active/Active Replication for Highly Availalbe HPC System Services. United States.
Engelmann, Christian, Scott, Steven L, Leangsuksun, Chokchai, and He, X. Sun . "Active/Active Replication for Highly Availalbe HPC System Services". United States. doi:.
@article{osti_1003410,
title = {Active/Active Replication for Highly Availalbe HPC System Services},
author = {Engelmann, Christian and Scott, Steven L and Leangsuksun, Chokchai and He, X.},
abstractNote = {High performance computing (HPC) exploits multi-processor parallelism on a large scale in order to enable research in computational sciences in various areas, such as nanotechnology, quantum chemistry, nuclear fusion and astrophysics. Simulations of real-world problems using mathematical abstraction models allow scientists to gain knowledge without the need or the capability to perform physical experiments. Today's high performance computing systems have several reliability deficiencies resulting in availability and serviceability issues. Head and service nodes represent a single point of failure and control for an entire system as they render it inaccessible and unmanageable in case of a failure until repair, causing a significant downtime. This paper introduces two distinct replication methods (internal and external) for providing symmetric active/active high availability for multiple head and service nodes running in virtual synchrony. It presents a comparison of both methods in terms of expected correctness, ease-of-use and performance based on early results from ongoing work in providing symmetric active/active high availability for two HPC system services (TORQUE and PVFS metadata server). It continues with a short description of a distributed mutual exclusion algorithm and a brief statement regarding the handling of Byzantine failures. This paper concludes with an overview of past and ongoing work, and a short summary of the presented research.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}

Conference:
Other availability
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