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Why pure computation time in parallel is longer than the serial version?

Ei-ji Nakama 
oops, PENRYN(SIMD) core used if you use 32bit ubuntu
development of 32bit stopped with PENRYN core.

Best Regards,
--
EI-JI Nakama  <nakama (a) ki.rim.or.jp>
"\u4e2d\u9593\u6804\u6cbb"  <nakama (a) ki.rim.or.jp>

Thread (19 messages)

Wesley Goi Why pure computation time in parallel is longer thanthe serial version? Feb 17 Xuening Zhu Why pure computation time in parallel is longer thanthe serial version? Feb 17 wesley goi Why pure computation time in parallel is longer thanthe serial version? Feb 17 Roger Bivand Why pure computation time in parallel is longer than the serial version? Feb 18 wesley goi Why pure computation time in parallel is longer than the serial version? Feb 18 Xuening Zhu Why pure computation time in parallel is longer than the serial version? Feb 22 Claudia Beleites Why pure computation time in parallel is longer than the serial version? Feb 22 Xuening Zhu Why pure computation time in parallel is longer than the serial version? Feb 22 Roger Bivand Why pure computation time in parallel is longer than the serial version? Feb 22 Xuening Zhu Why pure computation time in parallel is longer than the serial version? Feb 22 Roger Bivand Why pure computation time in parallel is longer than the serial version? Feb 23 Ei-ji Nakama Why pure computation time in parallel is longer than the serial version? Feb 23 Ei-ji Nakama Why pure computation time in parallel is longer than the serial version? Feb 23 Simon Urbanek Why pure computation time in parallel is longer than the serial version? Feb 25 Jim Gattiker Why pure computation time in parallel is longer than the serial version? Feb 25 George Ostrouchov Why pure computation time in parallel is longer than the serial version? Feb 25 Norm Matloff Why pure computation time in parallel is longer than the serial version? Feb 25 Jim Gattiker Why pure computation time in parallel is longer than the serial version? Feb 26 George Ostrouchov Why pure computation time in parallel is longer than the serial version? Feb 26