I tested a small application in three variants
b) parallelized with OpenMP tasks
c) parallelized with omp parallel sections
b) and c) deliver about the same speedup on a dual core, while b) is slightly faster.
This meets my expectaions.
But when I analyze "Concurrency" for b) only half of the processor time is shown and concurrency is "poor" while for c) the correct processor time with mainly "ideal" concurrency is shown.
Seems like OpenMP tasks are not supported by the Amplifier, yet!?