Question: 3. A sequential application with a 40% part that must be executed sequentially, is required to be accelerated four-fold. How many CPUs are required for

3. A sequential application with a 40% part that must be

3. A sequential application with a 40% part that must be executed sequentially, is required to be accelerated four-fold. How many CPUs are required for this task? 4. If two parallel threads try to update two different variables, can this cause coherence overhead? Justify

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