Intel® Advisor

Design Code for Efficient Vectorization, Threading, Memory Usage, and Accelerator Offloading


Efficiently Offload Your Code to GPUs

Use Offload Advisor to understand if your code would benefit from GPU porting.

  • Identify offload opportunities where it pays off the most.
  • Quantify the potential performance speedup from GPU offloading.
  • Locate bottlenecks and identify potential performance gains of fixing each.
  • Estimate data-transfer costs and get guidance on how to optimize data transfer.

Cookbook: Identify Code Regions to Offload to GPU and Visualize GPU Usage

Cookbook: Model C++ Application Performance on a Target GPU

Accelerate Heterogeneous Workloads

User Guide

Offload Modeling Resources

Optimize for Memory and Compute

Automated Roofline Analysis provides an intuitive visual representation of application performance against hardware-imposed limitations, such as memory bandwidth and compute capacity.

With automated roofline analysis, you can:

  • See performance headroom against hardware limitations
  • Get insights into an effective optimization roadmap
    • Identify high-impact optimization opportunities
    • Detect and prioritize bottlenecks by performance gain and understand their likely causes, such as memory bound versus compute bound
    • Pinpoint exact memory bottlenecks (L1, L2, L3, or DRAM)
  • Visualize optimization progress

Get Started with the Roofline Feature

Memory Level Roofline

CPU Roofline Analysis User Guide

GPU Roofline Analysis User Guide

More Resources

Optimize Vectorization for Better Performance

Vectorization is the operation of Single Instruction Multiple Data (SIMD) instructions on multiple data objects in parallel within a single CPU core. This can greatly increase performance by reducing loop overhead and making better use of the multiple math units in each core.

  • Find loops that will benefit from better vectorization.
  • Identify where it is safe to force compiler vectorization.
  • Pinpoint memory-access issues that may cause slowdowns.
  • Get actionable user code-centric guidance to improve vectorization efficiency.

Introduction to Intel Advisor Vectorization Workflow

User Guide

More Resources

Model, Tune, and Test Multiple Threading Designs

Threading Advisor helps you quickly prototype multiple threading options, project scaling on larger systems, optimize faster, and implement with confidence.

  • Identify issues and fix them before implementing parallelism.
  • Add threading to C, C++, C#, and Fortran code.
  • Prototype the performance impact of different threaded designs and project scaling on systems with larger core counts to identify potential scaling without disrupting development or implementation.
  • Find and eliminate data-sharing issues during design (when they're less expensive to fix.)

Introduction to Threading Advisor

Remodel Your Code

User Guide

Create, Visualize, and Analyze Task and Dependency Computation Graphs

Flow Graph Analyzer (FGA) is a rapid visual prototyping environment for applications that can be expressed as flow graphs using Intel® Threading Building Blocks (Intel® TBB) applications.

  • Construct, validate, and model application design and performance before generating Intel TBB code.
  • Get insight into nested or top-level data-parallel algorithm efficiency.

In addition to Intel TBB, FGA helps you to:

  • Visualize and interact with DPC++ asynchronous task graphs
  • Get insights into DPC++ task scheduling inefficiencies
  • Speed up algorithm design and express data-parallel constructs efficiently
  • Visualize and analyze OpenMP task dependence graphs for performance bottlenecks

Overview of Flow Graphs Using Intel® Threading Building Blocks (Intel® TBB)

Optimize Driving Performance with the Flow Graph Analyzer

Unravel OpenMP and Intel TBB Task Graphs with Flow Graph Analyzer

User Guide

Get Started


Intel Advisor is a part of the Intel® oneAPI Base Toolkit.

Get the Intel oneAPI Base Toolkit

System Requirements

Try It Out 

Follow the Get Started Guide and use an introductory code sample to see how Intel Advisor works.

Get Started Guide

Learn High-Performance Code Design 

Browse the cookbooks for recipes to help you design and optimize high-performing code for modern computer architectures.




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