OpenMPI 1.4.3 mpirun hostfile错误

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" 守护进程在发布时没有报告 ".我想弄清楚可能是什么问题.

谢谢!

Answer 1

我认为这些线

myocyte46 - daemon did not report back when launched

非常清楚 - 您在启动 mpi 守护程序或随后与它们通信时遇到麻烦。所以你需要开始考虑网络。您可以在没有密码的情况下 ssh 进入这些节点吗？你能ssh回来吗？抛开 MPI 程序不谈，你能

mpirun -np 4 hostname

并得到什么？