Studi Kinerja Parallel Virtual Machines pada Jaringan Komputer Berbasis Linux

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Abstract: PVM (Parallel Virtual Machines) is a software that able to utilize computer network as parallel multicomputer.This study is aimed to reveal the performance of PVM in computer network, especially data communicationperformance and computation performance. This studi used matrix multiplication to provide computationalloads to the PVM system, with varied matrix sizes, i.e. 12x12, 40x40, 80x80, 120x120, 240x240 and 360x360. The study found that PVM could use the Ethernet network bandwidth until 720KB per second or 58% out of the bandwidth capacity 10Mbps. Latency time counted 3846 microsecond, multicast data transfer rate was 227.575byte per second, cross communication data transfer rate was 155.253 byte per second, simultaneous datatransfer rate was 10.095 byte per second. Meanwhile, the performance test with matrix multiplication yielded speedup when the matrix size was 200x200 and up. With 4 PCs paralleled, the best speedup was 3.55 times for matrix size 360x360. This speedup was 88.9 percent compared to ideal speedup (4 times). This happend due to a portion of the time used for inter PCs communications. The C/C ratio was reduced (better) for matrix size 200x200 and up.
Keywords: parallel virtual machines, multiprocessor, communication to computation ratio
Penulis: WINARNO
Kode Jurnal: jptkomputerdd080039

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Jp Teknik Komputer dd 2008