MPI_WAITALL和非阻止接收无效

Question

我获得了一个0xc0000005错误代码等待等级的所有接收！= 0进程。即时消息，请从！= 0进程发送一个封锁发送，并希望在for循环中为每个过程接收它们。稍后，我等待所有收到的服务员，但这是当我遇到错误时。

if (rank == 0)
{
    grids* sudokuList;
    
    sudokuList = initParallel(process_count);

    int* data;
    data = (int*)malloc((process_count - 1) * sizeof(int));
    MPI_Request* recvRequests = (MPI_Request*)malloc((process_count - 1) * sizeof(MPI_Request));
    MPI_Request* sendRequests = (MPI_Request*)malloc((process_count - 1) * sizeof(MPI_Request));
    grids* ptr;
    ptr = sudokuList;

    for (int i = 1; i < process_count; i++)
    {
        MPI_Isend(ptr->grid.sudoku, N * N, MPI_INT, i, 0, MPI_COMM_WORLD, &sendRequests[i - 1]);
        MPI_Irecv(data+i, 1, MPI_INT, i, 2, MPI_COMM_WORLD, &recvRequests[i - 1]);
        ptr = ptr->next;
    }
    if (ptr != NULL)
    {
        lookForSolution(ptr->grid, rank);
        ptr = ptr->next;
    }
    MPI_Status* sendStatuses = (MPI_Status*)malloc((process_count - 1) * sizeof(MPI_Status));
    MPI_Waitall(process_count - 1, sendRequests, sendStatuses);

    // CRITICAL CODE
    // 

    MPI_Status* statuses = (MPI_Status*)malloc((process_count - 1) * sizeof(MPI_Status));
    MPI_Waitall(process_count - 1, recvRequests, statuses);

    free(recvRequests);
    free(sendStatuses);
    free(sendRequests);
    free(data);
    delete_grids(sudokuList);

}
else
{
    lookForSolution(recvGrid(), rank);

    // CRITICAL CODE
    MPI_Send(1, 1, MPI_INT, 0, 2, MPI_COMM_WORLD);
}