TY  - RPRT
AU  - Williams, Roy
AU  - Nagel, Wolfgang E.
TI  - Optimization of Output Bandwidth from an Intel Paragon
IS  - CCSF-44
CY  - Pasadena, CA
PB  - Concurrent Supercomputing Consortium
M1  - FZJ-2015-03204
M1  - CCSF-44
SP  - 6 p.
PY  - 1994
AB  - 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.
LB  - PUB:(DE-HGF)29
UR  - https://juser.fz-juelich.de/record/200819
ER  -