omptl使用openmp多核库优化过的STL库，从而给STL加入了多核并行运算的能力，在多核的机器上大大改进了STL算法的性能。-the use of multi-core library omptl OpenMP optimized STL library, and thus to the STL joined the multi-core parallel computing capabilities, in the multi-core machines has significantl