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.

gStride1:
gStride1 or global stride 1 is a measure of the number of consecutive memory references that access consecutive memory locations.

Classifying gStride1:
gStride1 can be classified as low, medium or high as follows:

Bucket	Condition
Low	The region of code contains no memory references. OR 1 or fewer out of every 3 array references have a global stride of 1.
Medium	1 out of every 3 array references have a global stride of 1.
High	2 out of every 3 array references have a global stride of 1. OR The region of code contains only 1 memory reference in each iteration of the outermost loop and the reference accesses consecutive memory locations.

Example 1:
Consider the following code:

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

Example 2:
Let's look at another example:

for (i=0; i<1000; i++){
   result[i] = 0;
}