Identify memory conflicts in a functional-decomposition problem to identify data-restructuring requirements. This procedure is part of the design phase for threaded applications that is necessary in order to identify issues that could cause performance degradation.
Identify the source of performance degradations or low performance gains of applications running on systems that support Hyper-Threading Technology. Once applications have been tuned for the Pentium® 4 processor, they can be tuned for processors that support Hyper-Threading Technology as a separate process. In some cases, however, the tuning process may not yield acceptable increases in performance.
Last week I posted a blog explaining the front-end of the pipeline on Intel® Microarchitecture Codename Sandy Bridge. Today's blog completes the discussion of the pipeline by explaining the back-end, and then why it's helpful to know this stuff in general.
Determine whether performance degradation (or lower-than-expected performance benefit) from Hyper-Threading Technology is due to exceeding the write-combining buffer capacity. A write-combining (WC) store buffer accumulates multiple stores in the same cache line before eventually writing the combined data farther out into the memory hierarchy, to accelerate processor write performance.
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