行0 行10a 行 2 1a5 000001010011100101110111 列0列1列2列3列4列5列6列7 例10一个在MPI中创建新通信域的例子 MPI Comm My World, SplitWorld: int my rank, group size, Color, Key MPI Init(&argc, &argv) MPI Comm dup (MPI COMM WORLD, &My World): MPI Comm rank (MyWorld, &my rank) MPI Comm size(MyWorld, &group size) Colormy rank%3 Ke MPI Comm split(My World, Color, Key, &SplitWorld): 例11考虑如下程序段: LI for i=1 to 50 do S:X(2*D) T =,,.X(3*I+1),, endfor f1(1)=2*I;g()=3*J+1。依赖方程为:例 10 一个在 MPI 中创建新通信域的例子 MPI__Comm MyWorld,, SplitWorld;; int my__rank,,group__size,, Color,, Key;; MPI__Init(&argc,, &argv);; MPI__Comm__dup(MPI__COMM__WORLD,,&MyWorld);; MPI__Comm__rank(MyWorld,,&my__rank);; MPI__Comm__size(MyWorld,,&group__size);; Color=my__rank%3;; Key=my__rank/3;; MPI__Comm__split(MyWorld,,Color,,Key,,&SplitWorld);; 例 11 考虑如下程序段: L1 :: for I = 1 to 50 do .. .. .. S :: X(2*I) = .. .. .. .. .. .. T :: .. .. .. = .. .. .. X(3*I + 1 ) .. .. .. .. .. .. endfor 这里: f1 (I) = 2 * I ;; g1 (J) = 3 * J + 1 。依赖方程为: