{"product_id":"a-comparative-analysis-of-networks-of-workstations-and-massively-parallel-processors-for-signal-processing-9781249593157","title":"A Comparative Analysis of Networks of Workstations and Massively Parallel Processors for Signal Processing","description":"\u003cp\u003e • Author(s): David C. Gindhart\u003cbr\u003e • Publisher: Biblioscholar\u003cbr\u003e • Publisher Imprint: Biblioscholar\u003cbr\u003e • BISAC: General\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e The traditional approach to parallel processing has been to use Massively Parallel Processors (MPPs). 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 MPPs and NOWs for the two-dimensional fast Fourier transform (2-D FFT). Three original, high-performance, portable 2-D FFTs 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 FFT a less viable candidate for parallelization, given its high communication overhead. \u003cbr\u003e\u003c\/p\u003e","brand":"Biblioscholar","offers":[{"title":"Paperback","offer_id":46863011283095,"sku":"9781249593157","price":1464.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/3471\/1191\/files\/9781249593157.webp?v=1769968507","url":"https:\/\/atlanticbooks.com\/products\/a-comparative-analysis-of-networks-of-workstations-and-massively-parallel-processors-for-signal-processing-9781249593157","provider":"Atlantic Books","version":"1.0","type":"link"}