Task skipping

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Task skipping is an approximate computing technique that allows to skip code blocks according to a specific boolean condition to be checked at run-time.

This technique is usually applied on the most computational-intensive section of the code.

It relies on the fact that a tuple of values sequentially computed are going to be useful only if the whole tuple meet certain conditions. Knowing that a value of the tuple invalides or probably will invalidate the whole tuple, it is possible to avoid the computation of the rest of the tuple.

Code example[edit]

The example that follows provides the result of task skipping applied on this C-like source code

for (int i = 0; i < N; i++) {     value_1 = compute_1(i);     value_2 = compute_2(i); } 

Skipping a task[edit]

for (int i = 0; i < N; i++) {     value_1 = compute_1(i);     if (value_1 >= fixed_threshold) {         value_2 = compute_2(i);     } } 

See also[edit]

• Loop perforation
• Memoization

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