p-thread merge sort!

A series of programs which demonstrate the progression for a serial dot product code to a hybrid MPI/Pthreads implementation. Files include the serial version, Pthreads version, MPI version, hybrid version and a makefile.-A series of programs which

利用Pthreads来实现矩阵向量相乘的并行化，大大提高速度-Using Pthreads to realize parallelization of matrix-vector multiplication, greatly improve the speed