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For parallel applications running on high-end computing systems, which processes of an application get launched on which processing cores is typically determined at application launch time without any information about the application characteristics. As high-end computing systems continue to grow in scale, however, this approach is becoming increasingly infeasible for achieving the best performance...
This paper describes the scalability of linear algebra kernels based on remote memory access approach. The current approach differs from the other linear algebra algorithms by the explicit use of shared memory and remote memory access (RMA) communication rather than message passing. It is suitable for clusters and scalable shared memory systems. The experimental results on large scale systems (Linux-Infiniband...
In the last decade or so, clusters have observed a tremendous rise in popularity due to the excellent price to performance ratio. A variety of Interconnects have been proposed during this period, with InfiniBand leading the way due to its high performance and open standard. At the same time, multiple programming models have emerged in order to meet the requirements of various applications and their...
Modern high performance computing systems are being increasingly deployed in a hierarchical fashion with multi-core computing platforms forming the base of the hierarchy. These systems are usually comprised of multiple racks, with each rack consisting of a finite number of chassis, and each chassis having multiple compute nodes or blades, based on multi-core architectures. The networks are also hierarchical...
In the last decade or so, clusters have observed a tremendous rise in popularity due to excellent price to performance ratio. A variety of Interconnects have been proposed during this period, with InfiniBand leading the way due to its high performance and open standard. Increasing size of the InfiniBand clusters has reduced the mean time between failures of various components of these clusters tremendously...
InfiniBand is becoming increasingly popular in the area of cluster computing due to its open standard and high performance. I/O interfaces like PCI-express and GX+ are being introduced as next generation technologies to drive InfiniBand with very high throughput. HCAs with throughput of 8x on PCI-express have become available. Recently, support for HCAs with 12x throughput on GX+ has been announced...
High computational power of commodity PCs combined with the emergence of low latency and high bandwidth interconnects has escalated the trends of cluster computing. Clusters with InfiniBand are being deployed, as reflected in the TOP 500 Supercomputer rankings. However, increasing scale of these clusters has reduced the mean time between failures (MTBF) of components. Network component is one such...
In the arena of cluster computing, MPI has emerged as the de facto standard for writing parallel applications. At the same time, introduction of high speed RDMA-enabled interconnects like InfiniBand, Myrinet, Quadrics, RDMA-enabled Ethernet has escalated the trends in cluster computing. Network APIs like uDAPL (user direct access provider library) are being proposed to provide a network-independent...
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