User Guide


Before Annotating Code for Deeper Analysis

Before you can
the best parallel opportunities by adding annotations, you need to
likely places to add parallelism. This section introduces several topics that explain factors you should consider as you closely examine the candidate code regions and their execution.
Each code region where you might add parallelism consists of a single
parallel site
and one or more
parallel tasks
enclosed within the parallel site. Each parallel site defines the scope of parallel execution. You can have multiple parallel sites in a program.
No matter how much you improve one part of your program, the program cannot complete any faster than the part that you did not speed up. So, focus your efforts on the parts of your program that use the most time.
Use the
Survey Report
provided by the Survey tool to help you understand where your program spends it time.

Product and Performance Information


Performance varies by use, configuration and other factors. Learn more at