Purpose and Usage | Prerequisites | Run | Data Reference

FLOP Analysis Purpose and Usage

Run a FLOP analysis to measure both floating-point and integer operations, and memory traffic, and add this data to the Survey Report. Use the FLOP analysis to generate application memory usage and performance values that help you make better decisions about your vectorization strategy.

Run a FLOP Analysis

To run a FLOP analysis: In the Vectorization Workflow tab, ensure the FLOP checkbox is selected, then click the Intel Advisor control: Run analysis button under Find Trip Counts and FLOP.

While analysis is running, you can do the following in the Workflow tab:

  • Stop analysis and data collection, and retain the already collected data: Click the button.

  • Cancel analysis and data collection, and discard the collected data: Click the button.

  • Interrupt post-collection data finalization: Click the button.

After analysis is complete, the Intel Advisor adds data to the Compute Performance and Memory column sets in the Survey Report. By default, FLOP data is initially displayed. Click the Intel Advisor control: Column Header Gear control in the Compute Performance column set header and choose the desired drop-down option to:

  • Show data for floating-point operations only, for integer operations only, or for both floating-point and integer operations.

  • Determine what is counted as an integer operation in integer calculations:

    • Choose Show Pure Compute Integer Operations to count only ADD, MUL, IDIV, and SUB operations.

    • Choose Show All Operations Processing Integer Data to count ADD, ADC, SUB, MUL, IMUL, DIV, IDIV, INC/DEC, shift, and rotate operations.

Tip

  • Collecting FLOP and integer data may substantially increase report generation time. There are a variety of techniques available to minimize data collection, result size, and execution time. Check See Also.

  • See Getting Started with Intel® Advisor for corresponding command line interface commands.

有关编译器优化的更完整信息,请参阅优化通知