Vectorizer

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High Clocks Per Instruction Retired when vectorizing the loop. [Knowledgebase]
Introduction Sometimes when we vectorize a loop, we get a high Clocks Per Instruction Retired (CPI) value. This happens when there is high bus utilization and the bus gets saturated. The subtrac ...

Posted: 2009-07-14 03:49:00 by
simd, SSE2, SSE3, SSE4, SSE, High CPI, Vectorizer, hardware prefetcher, SSE1, Memoray latency, BUS Saturation, Vtune
Numeric casting issue when during vectorization [Knowledgebase]
Reference Number : http://software.intel.com/en-us/forums/intel-c-compiler/topic/65372/Version : Intel compiler 11.0Operating System : LinuxProblem Description : The unsigned to double casti ...

Posted: 2009-08-25 00:08:26 by Om Sachan (Intel)
Vectorization, Vectorizer, Numeric casting