Note on Stride:
Memory stride is the distance between memory accesses and is measured as:

Local stride: This is the memory stride between two memory accesses for the same memory reference.

Global stride: This is the memory stride between memory accesses for consecutive memory references.

Consider the following example:

for (i=0; i<1000; i++){
   for(j=0; j<10; j++){
       sum += arrayOne[i] + arrayTwo[j];
   }
   result[i] = sum;
}

Note: This also means that if a region of code contains only 1 memory reference, global stride will be the same as local stride.

locStride3:
locStride3 or local stride 3 looks at the number of memory references that have a local stride of 3. It effectively measures the number of references that access the same 4 Byte memory location (like a float, int, uint32_t) repeatedly. Local stride looks at individual memory references and its final value is the aggregate of the locStride3 value for all memory references.

Classifying locStride3:
locStride3 can be classified as low, medium or high as follows:

Bucket	Condition
Low	The region of code contains no memory references that access 4 Byte memory locations. OR The region of code contains a number of memory references and 1 or fewer references out of every 3 have a local stride of 3.
Medium	The region of code contains a number of memory references and 1 out of every 2 references has a local stride of 3.
High	The region of code contains a number of memory references and 2 or more references out of every 3 have a local stride of 3.

Example:
Consider the following code:

for (i=0; i<1000; i++){
   for(j=0; j<10; j++){
       sum += arrayOne[i] + arrayTwo[j];
   }
   result[i] = sum;
}