• 2018 Update 1
  • 11/10/2017
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Functions of the two trace files A and B are mapped onto each other by their fully qualified names. These names contain not only the mere function name, but a hierarchical name constructed by the Intel® Trace Collector with the use of any information about modules, name spaces and classes that are available at trace time.
For example the fully qualified name of MPI_Allreduce is MPI:MPI_Allreduce because the Intel Trace Collector puts all MPI functions into the group MPI. Function groups defined by the user in the Intel Trace Analyzer have no influence on these full function names. The function aggregation shows the fully qualified name of a function in a small tooltip window when the mouse hovers over an entry.
The mapping of function groups is a little more subtle. For function groups that are within the hierarchy of the automatically created function group
Major Function Groups
in file A it is tried to find a matching group in B with the same name and nesting level in the corresponding hierarchy in B.
It works quite well for automatically generated groups. For example MPI is always mapped to MPI even if the groups differ because the two program runs did use a different subset of MPI calls. The same is true for groups that were created by instrumentation using the API provided by the Intel® Trace Collector.
When you create new function groups either by using the Function Aggregation dialog box or the ubiquitous context menu entries to ungroup existing function groups for one file then there will be created matching groups for the other file. You can find these read only groups under the header
Generated Groups
in the Function Aggregation dialog box.
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Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804