What is the differnce between concurrent software and sequential software and which one is better with multiprocessors?

Concurrent software is better suited to parallel processing environment represented by multiprocessors as compared to sequential software.

Explanation:

Sequential software corresponds to a code which is executed step by step on a single processing unit. A concurrent software on the other hand supports parallel execution by splitting the execution across multiple parallely executing component units. A multiprocessor system speeds up concurrent execution by providing independent execution units (processors) for these code segments running parallely. So concurrent software is better suited to multiprocessors.