intMPIAPIMPI_Comm_split( MPI_Comm comm,intcolor,intkey, _Out_ MPI_Comm *newcomm ); 参数 comm 要拆分的通信器。 color 调用进程要分配到的新通信器。颜色的值必须是非负值。 如果进程MPI_UNDEFINED指定颜色值,则函数会将newcomm参数中的MPI_COMM_NULL返回到
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&world_rank);MPI_Comm_size(MPI_COMM_WORLD,&world_size);intcolor=world_rank/4;// 根据行确定颜色// 根据颜色拆分通讯器,然后调用// 利用原始秩MPI_Commrow_comm;MPI_Comm_split(MPI_COMM_WORLD,color,world_rank,&row_comm);introw_rank,row_size;MPI_Comm_rank(row_comm,&row_rank);MPI_Comm_si...
人们都必须支付系统调用的成本，即使在内核中的工作微不足道，即从用户模式切换到内核模式再返回的成本。
returned in newcomm. This is a collective call; all processes must provide the same split_type, but each process is permitted to provide different values for key. An exception to this rule is that a process may supply the type value MPI_UNDEFINED, in which case newcomm returns MPI_COMM_...
Open mpi4: add HW_SUBDOMAIN type to MPI_Comm_split_type #4914 hzhou opened this issue Nov 16, 2020· 0 comments Assignees Projects Implementing MPI 4.0 CommentsCopy link Quote reply Contributor hzhou commented Nov 16, 2020 link: mpi-forum/mpi-issues#132 mpi-forum/mpi-issues#156...
MPI还会预先定义一个进程组MPI_COMM_SELF,只包含自己的进程组,因此里面的编号都是0 #include<stdio.h>#include"mpi.h"intmain() {intr1, r2;MPI_Init(NULL,NULL);MPI_Comm_rank(MPI_COMM_WORLD, &r1);MPI_Comm_rank(MPI_COMM_SELF, &r2); ...
MPI_Comm_split(comm, rank, rank, &newcomm) 等同于A.MPI_COMM_SELFB.MPI_COMM_NULLC.MPI_Comm_dup(comm, &newcomm)D.MPI_COMM_WORLD的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工具.一键将文档转化为在线题库手
MPI_Comm_split(comm, 0, rank, &newcomm) 等同于A.MPI_Comm_dup(comm,&newcomm)B.MPI_COMM_SELFC.MPI_COMM_NULLD.MPI_COMM_WORLD的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工具.一键将文档转化为在线题库手机刷