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Thursday, November 3 • 10:30am - 11:15am
Causes of Performance Instability due to Code Placement in X86

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Have you ever experienced significant performance swings in your application after seemingly insignificant changes? A random NOP shifting code addresses causing a 20% speedup or regression? This talk will explore some of the common and not so common architectural reasons why code placement/alignment can affect performance on older and newer x86 processors. Even though ideas will be shared on how to avoid/fix some of these issues in compilers, other very low level issues will not have good compiler solutions, but are still important to recognize for knowledge and identification purposes.

avatar for Zia Ansari

Zia Ansari

Principal Engineer, Intel

Thursday November 3, 2016 10:30am - 11:15am PDT
2 - Technical Talk (Rm LL21AB)