mpi3分配共享内存的次数是否有限制
我在使用mpi3中的共享内存，需要在各个进程中共享的是很多个小矩阵块（大约2300个），当我第2045次调用MPI_Win_allocate_shared函数后，会报错access violation，一开始我以为是分配了太多导致内存不够了，于是我将每个矩阵块的大小设置为2*2，结果当我第2045次调用MPI_Win_allocate_shared时仍然会报错access violation。不知道有没有做过相关问题的朋友能帮忙分析一下问题，下面是我的代码[*]program sharedmemtest
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USE, INTRINSIC :: ISO_C_BINDING, ONLY : C_PTR, C_F_POINTER
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use mpi
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!use global_parameter
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implicit none
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integer, parameter :: dp = selected_real_kind(14,200)
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integer ::hostcomm,hostrank
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INTEGER(KIND=MPI_ADDRESS_KIND) :: windowsize
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INTEGER :: disp_unit,my_rank,ierr,total
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integer i,size
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TYPE(C_PTR) ,allocatable:: baseptr(:)
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type matrix !新定义一个复数矩阵类型
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complex(8),pointer :: mat(:,:)
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end type !=========================
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TYPE(matrix),pointer :: NF_group_pair(:)
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integer ,allocatable::win(:)
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call MPI_INIT( ierr )
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call MPI_COMM_RANK(MPI_COMM_WORLD,MY_RANK,IERR)
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call MPI_COMM_SIZE(MPI_COMM_WORLD,Total,IERR)
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CALL MPI_Comm_split_type(MPI_COMM_WORLD, MPI_COMM_TYPE_SHARED, 0, MPI_INFO_NULL, hostcomm,ierr)
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CALL MPI_Comm_rank(hostcomm, hostrank,ierr)
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allocate(NF_group_pair(2300))
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allocate(win(2300),baseptr(2300))
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if (hostrank == 0) then
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windowsize = int(2**2,MPI_ADDRESS_KIND)*16_MPI_ADDRESS_KIND
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else
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windowsize = 0_MPI_ADDRESS_KIND
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end if
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disp_unit = 1
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!此处是循环分配共享内存，但是在第2045次的时候就会报错
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do i = 1,2300
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CALL MPI_Win_allocate_shared(windowsize, disp_unit, MPI_INFO_NULL, hostcomm, baseptr(i), win(i), ierr)
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if (hostrank /= 0) then
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CALL MPI_Win_shared_query(win(i),0, windowsize, disp_unit, baseptr(i),ierr)
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end if
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CALL C_F_POINTER(baseptr(i), NF_group_pair(i)%mat,)
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end do
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call MPI_BARRIER(MPI_COMM_WORLD,ierr)
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call MPI_FINALIZE(IERR)
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end program
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