User Guide

Contents

GPU Roofline 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 - 20x
20 - 50x
Goal
Analyze kernels in your application running on GPU
Analyze kernels running on GPU and loops/functions running on CPU in more details
Analyze kernels running on GPU and loops/functions running on CPU in more details
Analyses
Survey with GPU profiling + Characterization (FLOP)
Survey with GPU profiling + Characterization (FLOP, memory object analysis with light data transfer simulation between host and target device memory) + Performance Modeling for a baseline GPU
Survey with GPU profiling + Characterization (Trip Counts and FLOP with call stacks for CPU, CPU cache simulation, memory object analysis with medium data transfer simulation between host and target device memory) + Performance Modeling for a baseline GPU
Result for kernels on GPU
Memory-level GPU Roofline (for CARM, L3, SLM, GTI) with basic set of recommendations for performance optimization
Memory-level GPU Roofline (for CARM, L3, SLM, GTI) with extended set of recommendations for performance optimization
Memory-level GPU Roofline (for CARM, L3, SLM, GTI) with extended set of recommendations for performance optimization
Result for loops/functions on CPU
Cache-aware CPU Roofline for L1 cache
Memory-level Roofline with call stacks (for L1, L2, L3, DRAM)
Memory-level Roofline with call stacks (for L1, L2, L3, DRAM)
You can choose custom accuracy and set a custom perspective flow for your application. For more information, see Customize
GPU Roofline Insights
Perspective
.
There is a variety of techniques available to minimize data collection, result size, and execution overhead. Check Minimize Analysis Overhead .

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.