{"title":"David C Gindhart","description":null,"products":[{"product_id":"comparative-analysis-of-networks-of-workstations-and-massively-parallel-processo-book-david-c-gindhart-9781249593157","title":"A Comparative Analysis of Networks of Workstations and Massively Parallel Processors for Signal Processing","description":"The traditional approach to parallel processing has been to use Massively Parallel Processors (MPs). An alternative design is commercial-off-the-shelf (COTS) workstations connected to high-speed networks. These networks of workstations (NOWs) typically have faster processors, heterogeneous environments, and most importantly, offer a lower per node cost. This thesis compares the performance of MPs and NOWs for the two-dimensional fast Fourier transform (2-D FT). Three original, high-performance, portable 2-D FTs have been implemented: the vector-radix, row-column and pipeline. The performance of these algorithms was measured on the Intel Paragon, IBM SP2 and the AFIT NOW, which consists of 6 Sun Ultra workstations connected via the Myrinet switch. Three important conclusions have been made. First, the pipeline was the best algorithm on all platforms by approximately 30%. Second, the NOW was nearly equal to the SP2 in runtime, while the Paragon did not outperform a single Ultra workstation. As a result, NOWs are a competitive platform for this application. Finally, only limited speedup was achieved on the SP2 (2.9) with 32 processors, and AFIT NOW (1.9) with 5 processors. It appears that the changing platform communication-to-computation ratio has made the 2-D FT a less viable candidate for parallelization, given its high communication overhead.","brand":"WoB","offers":[{"title":"- \/ - \/ INTERNAL","offer_id":53251826254097,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":53251826581777,"sku":"NIN9781249593157","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9781249593157.jpg?v=1773592540"}],"url":"https:\/\/www.worldofbooks.com\/en-gb\/collections\/author-books-by-david-c-gindhart.oembed","provider":"World of Books ","version":"1.0","type":"link"}