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mpi-forum.org
https://www.mpi-forum.org/
MPI Forum
This website contains information about the activities of the MPI Forum, which is the standardization forum for the Message Passing Interface (MPI). You may find standard documents, information about the activities of the MPI forum, and links to comment on the MPI Document using the navigation at the top of...
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zhihu.com
https://www.zhihu.com/question/20188244
从并行计算的角度对比，MPI 与 OpenMP 有什么区别？ - 知乎
openmp+MPI混合编程在MPI基础上加大了复杂度，采用它的目的，是减少内存占用，而非提高性能。 即使是在单个节点，纯粹的共享内存系统，MPI程序在性能上也不输openmp，大多数时候甚至更好。
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mpi-forum.org
https://www.mpi-forum.org/docs/mpi-4.1/mpi41-repor…
MPI: A Message-Passing Interface Standard
The MPI standard includes point-to-point message-passing, collective communications, group and communicator concepts, process topologies, environmental management, process creation and management, one-sided communications, extended collective operations, ex- ternal interfaces, I/O, some miscellaneous topics, and multiple tool interfaces.
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mpi-forum.org
https://www.mpi-forum.org/docs/mpi-2.0/mpi-20-html…
Opening a File - Message Passing Interface
MPI_FILE_OPEN opens the file identified by the file name filename on all processes in the comm communicator group. MPI_FILE_OPEN is a collective routine: all processes must provide the same value for amode, and all processes must provide filenames that reference the same file.
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mpi-forum.org
https://www.mpi-forum.org/docs/mpi-3.1/mpi31-repor…
MPI: A Message-Passing Interface Standard
The MPI standard includes point-to-point message-passing, collective communications, group and communicator concepts, process topologies, environmental management, process cre- ation and management, one-sided communications, extended collective operations, external interfaces, I/O, some miscellaneous topics, and a pro ling interface.
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mpi-forum.org
https://www.mpi-forum.org/docs/mpi-1.1/mpi-11-html…
Examples using MPI_GATHER, MPI_GATHERV
Same as Example Examples using MPI_GATHER, MPI_GATHERV , but done in a different way at the sending end. We create a datatype that causes the correct striding at the sending end so that that we read a column of a C array. A similar thing was done in Example Examples , Section Examples . MPI_Comm comm; int gsize,sendarray [100] [150],*sptr; int root, *rbuf, stride, myrank, disp [2], blocklen [2 ...
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mpi-forum.org
https://www.mpi-forum.org/docs/mpi-2.2/mpi22-repor…
Return Status - Message Passing Interface
The information is returned by the status argument of MPI_RECV. The type of status is MPI -defined. Status variables need to be explicitly allocated by the user, that is, they are not system objects. In C, status is a structure that contains three fields named MPI_SOURCE, MPI_TAG, and MPI_ERROR; the structure may contain additional fields.
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mpi-forum.org
https://www.mpi-forum.org/docs/mpi-2.2/mpi22-repor…
Error Codes and Classes - Message Passing Interface
The error classes are a subset of the error codes: an MPI function may return an error class number; and the function MPI_ERROR_STRING can be used to compute the error string associated with an error class.
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mpi-forum.org
https://www.mpi-forum.org/docs/mpi-4.0/mpi40-repor…
MPI: A Message-Passing Interface Standard
The MPI standard includes point-to-point message-passing, collective communications, group and communicator concepts, process topologies, environmental management, process cre- ation and management, one-sided communications, extended collective operations, external interfaces, I/O, some miscellaneous topics, and multiple tool interfaces.
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mpi-forum.org
https://www.mpi-forum.org/docs/mpi-1.1/mpi-11-html…
Examples using MPI_SCATTER, MPI_SCATTERV
The reverse of Example Examples using MPI_GATHER, MPI_GATHERV . Scatter sets of 100 ints from the root to each process in the group. See figure 8 .