https://community.intel.com/t5/Software-Archive/Annotations-confusing/m-p/984043#M26717 Annotations are often cryptic, I'll agree. They're there more to help understand when something wasn't optimized in a particular way, rather than as a general informational tool. I'm guessing in your case that there are two loops, because of potential overlaps, and you get two annotations. The optimizer probably fused the loops.<BR /><BR />I suggest reading annotations for entertainment value, unless you really want to wade in deeply.<BR /><BR />Steve Mon, 18 Feb 2002 12:50:02 GMT Steven_L_Intel1 2002-02-18T12:50:02Z https://community.intel.com/t5/Software-Archive/Annotations-confusing/m-p/984042#M26716 Here is a line from my source code listing: <BR />3 5 6 7 geom%e%L = ABS(geom%e) <BR /> <BR />Here are the corresponding annotations: <BR />3. Not unrolling loop: unroll inhibitor <BR />5. Unrolling loop 7 times <BR />6. Prefetching unnamed variable, 44 bytes ahead <BR />7. Prefetching .T34_, 32 bytes ahead <BR /> <BR />So it is not unrolling but it is unrolling 7 times? I don't understand that... <BR /> <BR />also, there are 8 annotations in total but the source listing only references 7 annotations. Is there a numbering problem between the source listing and the annotations? This might explain both problems... Mon, 18 Feb 2002 07:17:11 GMT https://community.intel.com/t5/Software-Archive/Annotations-confusing/m-p/984042#M26716 michael-a-carr 2002-02-18T07:17:11Z https://community.intel.com/t5/Software-Archive/Annotations-confusing/m-p/984043#M26717 Annotations are often cryptic, I'll agree. They're there more to help understand when something wasn't optimized in a particular way, rather than as a general informational tool. I'm guessing in your case that there are two loops, because of potential overlaps, and you get two annotations. The optimizer probably fused the loops.<BR /><BR />I suggest reading annotations for entertainment value, unless you really want to wade in deeply.<BR /><BR />Steve Mon, 18 Feb 2002 12:50:02 GMT https://community.intel.com/t5/Software-Archive/Annotations-confusing/m-p/984043#M26717 Steven_L_Intel1 2002-02-18T12:50:02Z