OpenMPI 1.4.3 mpirun主机文件错误 [英] OpenMPI 1.4.3 mpirun hostfile error

问题描述

我正在尝试在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.当我使用主机文件/机器文件提交MPIRUN命令时，没有任何输出，收到空白屏幕.因此，我必须取消工作..

I am trying to run a simple MPI program on 4 nodes. I am using OpenMPI 1.4.3 running on Centos 5.5. When I submit the MPIRUN Command with the hostfile/machinefile, I get no output, receive a blank screen. Hence, I have to kill the job. .

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

I use the following run command: : 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

这是我要在4个节点上执行的MPI程序

Here is the MPI program I am trying to execute on 4 nodes

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

   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:

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

我在每个节点上独立运行上述MPI程序，并且编译并运行正常.使用主机文件时出现"启动时守护进程未报告"的问题.我正在尝试找出可能是什么问题.

I ran the above MPI program independently on each of the nodes and it compiled and ran just fine. I have this issue of "Daemon did not report back when launched" when I use the hostfile. I am trying to figure out what could be the issue.

谢谢！

推荐答案

我认为这些行

myocyte46 - daemon did not report back when launched

非常清楚-启动mpi守护程序或之后与它们进行通信时遇到麻烦.因此，您需要开始研究网络.您可以不使用密码SSH到这些节点吗?你可以回头吗?抛开MPI程序，您可以

are pretty clear -- you're having trouble either launching the mpi daemons or communicating with them afterwards. So you need to start looking at networking. Can you ssh without password into these nodes? Can you ssh back? Leaving aside the MPI program, can you

mpirun -np 4 hostname

得到任何东西吗?

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