March 7, 2017

Applied Parallel Computing by Yuefan Deng

By Yuefan Deng

The booklet offers a realistic consultant to computational scientists and engineers to aid improve their learn by way of exploiting the superpower of supercomputers with many processors and complicated networks. This ebook makes a speciality of the layout and research of simple parallel algorithms, the foremost parts for composing higher programs for quite a lot of purposes.

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In, 1D MSRT (L = 2; l1 = 2, l2 = 4) is a truncated 1D SRT (L = 2; l1 = 2, l2 = 4). L = 2 is the maximum node level. e. l1 and l2 links. Then, l1 = 2 and l2 = 4 indicates the short and long bypass links spanning over 2l1 = 4 and 2l2 = 16 hops respectively. 6 shows the similarity and difference of SRT and MSRT. We extend 1D MSRT bypass rings to 3D MSRT networks. To maintain a suitable node degree, we add two types of bypass links in x-axis and y-axis and then form a 2D expansion network in xy-plane.

2 illustrates the data decomposition model. 3. Control decomposition In control decomposition, the tasks or instruction streams rather than data are partitioned and assigned to different processors. Control decomposition approach is not as uncommon as it appears for many non-mathematical applications. 3 illustrates control decomposition. 1 Fox Johnson Lyzenga Otto Salmon Walker. July 27, 2012 6:17 48 Applied Parallel Computing 9in x 6in b1350-ch05 Applied Parallel Computing Fig. 2. A sketch of domain decomposition model in which the computational domain is decomposed to sub-domains (which are then assigned to computing resources).

That makes a cleverer design of network more desirable in top-ranked computers. Here, we present two advanced cellular network topology that might be the trend for the newer computers. 4. Overview of the Top10 supercomputers in June 2011. Rank System Speed (Tflops) Processor family 1 2 3 4 5 6 7 8 9 10 K Computer Tianhe-1A Cray XT5 Dawning HP ProLiant Cray XE6 SGI Altix ICE Cray XE6 Bull Bullx IBM BladeCenter 8162 2566 1759 1271 1192 1110 1088 1054 1050 1042 SPARC64 Intel EM64T AMD x86 64 Intel EM64T Intel EM64T AMD x86 64 Intel EM64T AMD x86 64 AMD x86 64 AMD x86 64 Co-processor Interconnect family Interconnect topology N/A nVidia GPU N/A nVidia Tesla nVidia GPU N/A N/A N/A N/A IBM Power X Cell Tofu Proprietary SeaStar Infiniband Infiniband Gemini Infiniband Gemini Infiniband Infiniband 6D Torus Fat Tree 3D Torus Fat Tree Fat Tree 3D Torus Fat Tree 3D Torus Fat Tree Fat Tree July 27, 2012 6:17 Applied Parallel Computing 26 9in x 6in b1350-ch03 Applied Parallel Computing MPU networks The Micro Processor Unit (MPU) network is a combination of two k-dimensional rectangular meshes of equal size, which are offset by 1/2 of a hop along each dimension to surround each vertex from one mesh with a cube of 2k neighbors from the other mesh.

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