PARALLEL PROCESSOR

• what is parallel computing?

1. Traditionally, software has been written for serial computation:
2. To be run on a single computer having a single Central Processing Unit (CPU);
3. A problem is broken into a discrete series of instructions.Instructions are executed one after another.
4. Only one instruction may execute at any moment in time.

for example:

• parallel computing is the simultaneous use of multiple compute resources to solve a computational problem:      

1. To be run using multiple CPUs
2. A problem is broken into discrete parts that can be solved concurrently
3. Each part is further broken down to a series of instructions
4. Instructions from each part execute simultaneously on different CPUs

for example:

• The compute resources might be:

1. A single computer with multiple processors;
2. An arbitrary number of computers connected by a network
3. A combination of both.

• The computational problem should be able to:

1. Be broken apart into discrete pieces of work that can be solved simultaneously;
2. Execute multiple program instructions at any moment in time;
3. Be solved in less time with multiple compute resources than with a single compute resource.

by:maryam jamilah bt abdullah