TY - JOUR
T1 - Identifying the capability of overlapping computation with communication
AU - Sohn, A.
AU - Ku, J.
AU - Kodama, Y.
AU - Sato, M.
AU - Sakane, H.
AU - Yamana, H.
AU - Sakai, S.
AU - Yamaguchi, Y.
PY - 1996/1/1
Y1 - 1996/1/1
N2 - Overlapping computation with communication is central to obtaining high performance on distributed-memory multiprocessors. This report explicates the overlapping capability of two distributed-memory multiprocessors: the EM-X and IBM SP-2. The well-known bitonic sorting algorithm is selected for experiments. Various message sizes are used to determine when, where, how much and why overlapping takes place. Experimental results indicate that both multiprocessors would yield up to 30% to 40% overlap of communication time when the message size is approximately 1K integers. EM-X is found message-size insensitive yielding high overlap for various message sizes while SP-2 was effective for the window of message size 512 to 2K integers.
AB - Overlapping computation with communication is central to obtaining high performance on distributed-memory multiprocessors. This report explicates the overlapping capability of two distributed-memory multiprocessors: the EM-X and IBM SP-2. The well-known bitonic sorting algorithm is selected for experiments. Various message sizes are used to determine when, where, how much and why overlapping takes place. Experimental results indicate that both multiprocessors would yield up to 30% to 40% overlap of communication time when the message size is approximately 1K integers. EM-X is found message-size insensitive yielding high overlap for various message sizes while SP-2 was effective for the window of message size 512 to 2K integers.
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M3 - Conference article
AN - SCOPUS:0029727823
SN - 1089-795X
SP - 133
EP - 138
JO - Parallel Architectures and Compilation Techniques - Conference Proceedings, PACT
JF - Parallel Architectures and Compilation Techniques - Conference Proceedings, PACT
T2 - Proceedings of the 1996 Conference on Parallel Architectures and Compilation Techniques, PACT'96
Y2 - 20 October 1996 through 23 October 1996
ER -