Question

我试图在4个节点上运行一个简单的MPI程序。我正在使用在Centos 5.5上运行的OpenMPI 1.4.3。当我使用hostfile / machinefile提交MPIRUN命令时，我没有输出，接收空白屏幕。因此，我必须杀死这份工作。。

我使用以下运行命令:: mpirun --hostfile hostfile -np 4 new46

 OUTPUT ON KILLING JOB:
 mpirun: killing job...
 --------------------------------------------------------------------------
  mpirun noticed that the job aborted, but has no info as to the process that caused 
  that situation.
  --------------------------------------------------------------------------
  mpirun was unable to cleanly terminate the daemons on the nodes shown
   below. Additional manual cleanup may be required - please refer to
   the "orte-clean" tool for assistance.
   --------------------------------------------------------------------------
    myocyte46 - daemon did not report back when launched
    myocyte47 - daemon did not report back when launched
    myocyte49 - daemon did not report back when launched

这是我试图在4个节点上执行的MPI程序

   **************************

   if (my_rank != 0)
   {
    sprintf(message, "Greetings from the process %d!", my_rank);
    dest = 0;
    MPI_Send(message, strlen(message)+1, MPI_CHAR, dest, tag, MPI_COMM_WORLD);
   }
   else
   {
   for (source = 1;source < p; source++)
   {
    MPI_Recv(message, 100, MPI_CHAR, source, tag, MPI_COMM_WORLD, &status);
    printf("%s\n", message);
   }

   ****************************

我的主机文件如下所示：

   [amohan@myocyte48 ~]$ cat hostfile
   myocyte46
   myocyte47
   myocyte48
   myocyte49
   *******************************

我在每个节点上独立运行上面的MPI程序，它编译并运行得很好。当我使用主机文件时，我有这个问题“守护进程在启动时没有报告”。我想弄清楚可能是什么问题。

谢谢！

Answer 1

我认为这些行

myocyte46 - daemon did not report back when launched

很清楚 - 你在启动mpi守护进程或之后与它们通信时遇到了麻烦。所以你需要开始关注网络。你可以没有密码ssh到这些节点吗？你能回来吗？撇开MPI计划，你可以

mpirun -np 4 hostname

得到任何东西？

OpenMPI 1.4.3 mpirun hostfile错误

1 个答案: