Intel® Advisor

Using Intel® Inspector and Intel® VTune™ Amplifier

Intel® Advisor helps you:

  • Discover where to add parallelism to your program by identifying where your program spends its time. You propose parallel code regions when you annotate the parallel sites and tasks.

  • Predict the performance you might achieve with the proposed parallel code regions.

  • Predict the data sharing problems that could occur in the proposed parallel code regions.

Data Sharing Problems

In a serial program, the order of the operations during program execution are known. However, when code executes as multiple parallel tasks, an operation can execute before, after, or simultaneously with an operation in the other task. For example, when parallel tasks access or modify a shared memory location, data sharing problems can occur.

Total Time

View the total amount of time that the function or loop and all of its callees executed. This value starts with the total time spent in the entire program at the top and decreases below the hot code regions in the call tree.

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