Parallel Programming: for Multicore and Cluster Systems- P7 pptx

Ngày tải lên: 03/07/2014, 22:20

... left) of β and selects the output link for forwarding the message according to the following rule: • for β k = 0, the message is forwarded over the upper link of the switch and • for β k = 1, ... switch can forward the message without 52 2 Parallel Computer Architecture Fig. 2.23 Illustration of path selection for west-first routinginan8×8mesh.The links shown as blocked are used...

Ngày tải lên: 03/07/2014, 16:20

... separate thread available for execution. Therefore, the application program must apply parallel pro- gramming techniques to get performance improvements for SMT processors. 2.4.2 MulticoreProcessors According ... be used for the transmission and the switching strategy which determines whether and how mes- sages are cut into pieces, how a routing path is assigned to a message, and...

Ngày tải lên: 03/07/2014, 16:20

... Language bindings for C, C++, Fortran-77, and Fortran-95 are sup- ported. In the following, we concentrate on the interface for C and describe the most important features. For a detailed description, ... product and a matrix–vector multiplication and derive the formula for the running time on a mesh topology. Exercise 4.14 Develop a runtime function to capture the execution ti...

Ngày tải lên: 03/07/2014, 16:21

... communication partners in the form source/dest are given in this order. For example, for the process with rank=5,itiscoords[1]=1, and there- fore source=9 (lower neighbor in dimension 0) and dest=1 (upper ... and source for each pro- cess. These are then used as parameters for MPI Sendrecv(). The following diagram illustrates the exchange. For each process, its rank, its Carte...

Ngày tải lên: 03/07/2014, 16:21

Ngày tải lên: 03/07/2014, 22:20

Ngày tải lên: 03/07/2014, 22:20

Ngày tải lên: 03/07/2014, 22:20

Ngày tải lên: 03/07/2014, 22:20

Ngày tải lên: 03/07/2014, 22:20