Challenge
Develop a methodology for the design phase of the development cycle. Regions identified by the analysis phase are examined during the design phase to determine changes that must be made to accommodate a threading paradigm.
Multi-thread apps for Multi-Core
Performance Issues on Hyper-Threading Technology-Enabled Systems
Challenge
Create a summary of performance issues related to Hyper-Threading Technology for an application. This information is a starting point to get an idea as to what optimizations and source code changes will make the biggest difference.
Effectiveness of Hyper-Threading Technology With an Application
Challenge
Ascertain whether the level of performance improvement from Hyper-Threading Technology for a specific application is acceptable. There is a misconception that equal performance on two workloads means equal Hyper-Threading Technology effectiveness. This doesn't give the full picture, since the amount of performance achievable is unknown.
Detect Stalls Due to Exceeding Write-Combining Store Buffers on Hyper-Threading Technology-Enabled Systems
Challenge
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.
Apply Data Decomposition to Create Threaded Code
Challenge
Implement data decomposition on a serial function in order to produce a threaded version. The threaded version creates threads, each performing individual pieces of a computationally intensive operation.
Scaling Ambient Animations for Improved Game Experience
Game developers want a game that is fair to all players. This article introduces a demo called Horsepower that shows enhanced ambient animation when run on a multi-core CPU. Horsepower features a multi-threaded game framework based on the Smoke demo.
Choose the Right Threading Model (Task-Parallel or Data-Parallel Threading)
Challenge
Choose task-level or data-parallel threading for various parts of an application. Choosing the right threading method minimizes the amount of time spent modifying, debugging, and tuning threaded code.
Solution
Describe your application (or an individual operation in that application) in terms of one of two models based on fit for the particular job:
Use Instructions Retired Events to Evaluate Threading Methodology
Challenge
Evaluate instructions-retired data in conjunction with performance data to examine the correctness of threading methodology. The Instructions Retired processor event in the VTune™ Performance Analyzer is a key performance indicator. Instructions Retired can give you quick insight into possible performance problems in your application.
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