User Guide

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Problem: Inaccurate Sum in the Grid

The sum of the several summands in the grid view may not equal the overall time shown for the parent of the items.

Cause

The values in the data columns are rounded. For items that are sums of several other items, such as a function with several stacks, the rounded sums may differ slightly from the sum of rounded summands.
For example:
Module / Function
Time (exact)
Time (rounded)
foo.dll
0.2468
0.247
    
foo()
0.1234
0.123
    
bar()
0.1234
0.123
The rounded values in the grid do not sum up exactly as (0.123 + 0.123) != 0.247.

Product and Performance Information

1

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