Visible to Intel only — GUID: GUID-37069836-450E-417A-8C7C-AFFB4F527AB2
Visible to Intel only — GUID: GUID-37069836-450E-417A-8C7C-AFFB4F527AB2
Offload Modeling Accuracy Presets
For each perspective, Intel® Advisor has several levels of collection accuracy. Each accuracy level is a set of analyses and properties that control what data is collected and the level of collection details. The higher accuracy value you choose, the higher runtime overhead is added.
The following accuracy levels are available:
Comparison / Accuracy Level |
Low |
Medium |
High |
---|---|---|---|
Overhead |
5 - 10x |
15 - 50x |
50 - 80x |
Goal |
Model performance of an application that is mostly compute bound and does not have dependencies |
Model application performance considering memory traffic for all cache and memory levels |
Model application performance with all potential limitations for offload candidates |
Analyses |
Survey + Characterization (Trip Counts and FLOP) + Performance Modeling with no assumed dependencies |
Survey + Characterization (Trip Counts and FLOP with cache simulation for the selected target device, callstacks, and light data transfer simulation) + Performance Modeling with no assumed dependencies |
Survey + Characterization (Trip Counts and FLOP with cache simulation for the selected target device, callstacks, and medium data transfer simulation) + Dependencies + Performance Modeling with assumed dependencies |
Result |
Basic Offload Modeling report that shows potential speedup and performance metrics estimated on a target considering memory traffic from execution units to L1 cache only. The result might be inaccurate for memory-bound applications. |
Offload Modeling report extended with data transfers estimated between host and device platforms considering memory traffic for all cache and memory levels |
Offload Modeling report with detailed data transfer estimations and automated check for loop-carried dependencies for more accurate search for the most profitable regions to offload |
You can choose custom accuracy and set a custom perspective flow for your application. For more information, see Customize Offload Modeling Perspective.