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使用MPI_Allgather收集不同大小的数组

[英]Gather arrays of different sizes using MPI_Allgather

原文 2018-11-14 17:13:20 9 1 fortran/ mpi

MPI_Allgather seems to assume that all arrays to be gathered from different processes are of the the same size. MPI_Allgather似乎假设要从不同进程中收集的所有数组的大小相同。 However, in my case, the arrays to be gathered are of different size in different processes. 但是，就我而言，要收集的数组在不同的过程中具有不同的大小。 For this case, what is the proper subroutine to use? 对于这种情况，应该使用什么合适的子例程？ Is it MPI_Allgatherv ? 是MPI_Allgatherv吗？

1 个解决方案

是的，正确的函数是MPI_Allgatherv 。

MPI_Allgather 接收垃圾 - MPI_Allgather receiving junk

MPI_ALLGATHER错误并行化代码 - MPI_ALLGATHER error parallelizing code

制作Fortran MPI_Allgather代码时出错 - Error when making a fortran MPI_Allgather code

使用两者均不熟悉的Fortran90和MPI，尝试使用MPI_Gather从循环中收集每个进程中的3个不同变量 - Using Fortran90 and MPI, new to both, trying to use MPI_Gather to collect from a loop 3 different variables in each process

Fortran中具有不同窗口大小的MPI共享内存 - MPI shared memory with different window sizes in Fortran

使用MPI_TYPE_VECTOR代替MPI_GATHER - Using MPI_TYPE_VECTOR instead of MPI_GATHER

使用 MPI_Gather 在 Fortran 中发送二维数组 - Sending 2D arrays in Fortran with MPI_Gather

使用fortran衍生的数据类型在mpi_gather中进行分段错误 - Segmentation fault in mpi_gather using fortran derived datatypes

在Fortran中使用MPI_Gather时，无效的指针和分段错误 - Invalid pointer and segmentation fault when using MPI_Gather in Fortran

mpi_gather问题 - Issue with mpi_gather

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相关问题 MPI_Allgather 接收垃圾 - MPI_Allgather receiving junk MPI_ALLGATHER错误并行化代码 - MPI_ALLGATHER error parallelizing code 制作Fortran MPI_Allgather代码时出错 - Error when making a fortran MPI_Allgather code 使用两者均不熟悉的Fortran90和MPI，尝试使用MPI_Gather从循环中收集每个进程中的3个不同变量 - Using Fortran90 and MPI, new to both, trying to use MPI_Gather to collect from a loop 3 different variables in each process Fortran中具有不同窗口大小的MPI共享内存 - MPI shared memory with different window sizes in Fortran 使用MPI_TYPE_VECTOR代替MPI_GATHER - Using MPI_TYPE_VECTOR instead of MPI_GATHER 使用 MPI_Gather 在 Fortran 中发送二维数组 - Sending 2D arrays in Fortran with MPI_Gather 使用fortran衍生的数据类型在mpi_gather中进行分段错误 - Segmentation fault in mpi_gather using fortran derived datatypes 在Fortran中使用MPI_Gather时，无效的指针和分段错误 - Invalid pointer and segmentation fault when using MPI_Gather in Fortran mpi_gather问题 - Issue with mpi_gather

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