%0 Report
%A Williams, Roy
%A Nagel, Wolfgang E.
%T Optimization of Output Bandwidth from an Intel Paragon
%N CCSF-44
%C Pasadena, CA
%I Concurrent Supercomputing Consortium
%M FZJ-2015-03204
%M CCSF-44
%P 6 p.
%D 1994
%X We examine the question of how to get maximum output bandwidth from a "real" application running on many nodes of a Paragon. We consider synchronization, flow control, message passing and partition management, and the use of the PARtools performance monitoring and visualization environment to understand and thus optimize these aspects.The application is a "digital VCR": each processor has in memory several compressed video frames, and these are to be decompressed, sent to the Hippi device, and output to a framebuffer at the fastest possible rate. While the Hippi processor is capable of 80 Mbyte/sec, the aggregate bandwidth from the computational processors is 21 Mbyte/sec.In this communication-bound application, we find it optimal to have the communication device (the Hippi processor) to have control, with other processors acting as servers; rather than the processors having distributed control and the Hippi processor acting as server.
%F PUB:(DE-HGF)29
%9 Report
%U https://juser.fz-juelich.de/record/200819