parallel program的用法和樣例：
例句
- Development of parallel programs is concerned as an acknowledged difficulty in computing.
并行程序的開發是并行計算中一個公認的難題。 - Some existing examples have been tested with the developed technique and the results prove that the algorithm has high speedup and parallel efficiency.
算例驗證的結果表明，并行程序具有明顯的加速比和并行效率。
