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Low Latency Networking in Virtualized EnvironmentsLancaster, Robert January 2012 (has links)
No description available.
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Performance analysis and improvement of InfiniBand networks. Modelling and effective Quality-of-Service mechanisms for interconnection networks in cluster computing systems.Yan, Shihang January 2012 (has links)
The InfiniBand Architecture (IBA) network has been proposed as a new
industrial standard with high-bandwidth and low-latency suitable for constructing
high-performance interconnected cluster computing systems. This architecture
replaces the traditional bus-based interconnection with a switch-based network for
the server Input-Output (I/O) and inter-processor communications. The efficient
Quality-of-Service (QoS) mechanism is fundamental to ensure the import at QoS
metrics, such as maximum throughput and minimum latency, leaving aside other
aspects like guarantee to reduce the delay, blocking probability, and mean queue
length, etc.
Performance modelling and analysis has been and continues to be of great
theoretical and practical importance in the design and development of
communication networks. This thesis aims to investigate efficient and cost-effective
QoS mechanisms for performance analysis and improvement of InfiniBand
networks in cluster-based computing systems.
Firstly, a rate-based source-response link-by-link admission and congestion
control function with improved Explicit Congestion Notification (ECN) packet
marking scheme is developed. This function adopts the rate control to reduce
congestion of multiple-class traffic. Secondly, a credit-based flow control scheme is
presented to reduce the mean queue length, throughput and response time of the system. In order to evaluate the performance of this scheme, a new queueing
network model is developed. Theoretical analysis and simulation experiments show
that these two schemes are quite effective and suitable for InfiniBand networks.
Finally, to obtain a thorough and deep understanding of the performance attributes
of InfiniBand Architecture network, two efficient threshold function flow control
mechanisms are proposed to enhance the QoS of InfiniBand networks; one is Entry
Threshold that sets the threshold for each entry in the arbitration table, and other is
Arrival Job Threshold that sets the threshold based on the number of jobs in each
Virtual Lane. Furthermore, the principle of Maximum Entropy is adopted to analyse
these two new mechanisms with the Generalized Exponential (GE)-Type
distribution for modelling the inter-arrival times and service times of the input traffic.
Extensive simulation experiments are conducted to validate the accuracy of the
analytical models.
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Reducing Network Latency for Low-cost Beowulf ClustersCarver, Eric R. 10 October 2014 (has links)
No description available.
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Designing Efficient MPI and UPC Runtime for Multicore Clusters with InfiniBand, Accelerators and Co-ProcessorsLuo, Miao 02 October 2013 (has links)
No description available.
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Designing a Scalable Network Analysis and Monitoring Tool with MPI SupportAugustine, Albert Mathews 28 December 2016 (has links)
No description available.
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Designing high performance and scalable MPI over InfiniBandLiu, Jiuxing 12 October 2004 (has links)
No description available.
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Designing Support For MPI-2 Programming Interfaces On Modern InterConnectsGangadharappa, Tejus A. 02 September 2009 (has links)
No description available.
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Designing Scalable and High Performance One Sided Communication Middleware for Modern InterconnectsSanthanaraman, Gopalakrishnan 02 September 2009 (has links)
No description available.
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Improving the Performance of Selected MPI Collective Communication Operations on InfiniBand NetworksViertel, Carsten 23 September 2007 (has links) (PDF)
The performance of collective communication
operations is one of the deciding factors in
the overall performance of a MPI application.
Open MPI's component architecture offers an easy
way to implement new algorithms for collective
operations, but current implementations use the
point-to-point components to access the
InfiniBand network. Therefore it is tried to
improve the performance of a collective component
by accessing the InfiniBand network directly.
This should avoid overhead and make it possible
to tune the algorithms to this specific network.
The first part of this work gives a short overview
of the InfiniBand Architecture and Open MPI. In
the next part several models for parallel
computation are analyzed. Afterwards various
algorithms for the MPI_Scatter, MPI_Gather and
MPI_Allgather operations are presented. The
theoretical performance of the algorithms is
analyzed with the LogfP and LogGP models.
Selected algorithms are implemented
as part of an Open MPI collective component.
Finally the performance of different algorithms and
different MPI implementations is compared. The test
results show, that the performance of the
operations could be improved for several message
and communicator size ranges.
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Managementtool für InfiniBandFranke, Maik 24 January 2005 (has links)
Managementtool for InfiniBand / Managementtool für InfiniBand
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