Networking openMPI/mpich2不'；t在多个节点上运行

我试图在多节点集群上安装openMPI和mpich2，但在这两种情况下，在多台计算机上运行时遇到问题。使用mpich2，我可以从head节点在特定主机上运行，但如果我尝试从compute节点到其他节点运行某些内容，我会得到：

HYDU_sock_connect (utils/sock/sock.c:172): unable to connect from "destination_node" to "parent_node" (No route to host)
[proxy:0:0@destination_node] main (pm/pmiserv/pmip.c:189): unable to connect to server parent_node at port 56411 (check for firewalls!)

如果我尝试使用sge设置作业，我会遇到类似的错误

另一方面，如果我尝试使用openMPI来运行作业，我将无法在任何远程机器上运行，即使是从head节点。我得到：

ORTE was unable to reliably start one or more daemons.
This usually is caused by:

* not finding the required libraries and/or binaries on
  one or more nodes. Please check your PATH and LD_LIBRARY_PATH
  settings, or configure OMPI with --enable-orterun-prefix-by-default

* lack of authority to execute on one or more specified nodes.
  Please verify your allocation and authorities.

* the inability to write startup files into /tmp (--tmpdir/orte_tmpdir_base).
  Please check with your sys admin to determine the correct location to use.

*  compilation of the orted with dynamic libraries when static are required
  (e.g., on Cray). Please check your configure cmd line and consider using
  one of the contrib/platform definitions for your system type.

* an inability to create a connection back to mpirun due to a
  lack of common network interfaces and/or no route found between
  them. Please check network connectivity (including firewalls
  and network routing requirements).

---

这些机器相互连接，我可以从任何机器到任何其他机器进行ping、ssh等无密码操作，所有机器中的MPI_LIB和路径都设置得很好。

通常这是因为您没有设置主机文件或在命令行上传递主机列表

对于MPICH，您可以通过在命令行上传递标志

-host

，然后是主机列表（

host1

、

host2

、

host3

）来完成此操作

然后在命令行上传递该文件，如下所示：

mpiexec -f <hostfile> -n 3 <executable>

mpiexec-f-n3

类似地，对于Open MPI，您将使用：

mpiexec --host host1,host2,host3 -n 3 <executable>

mpiexec—主机主机1、主机2、主机3-n3

及

mpiexec--hostfile hostfile-n3

您可以通过以下链接获得更多信息：

• MPICH-
• 开放式MPI-

---

如果我做了所有这些事情，但仍然得到

ORTE无法可靠地启动一个或多个守护进程

mpiexec -f <hostfile> -n 3 <executable>

mpiexec --host host1,host2,host3 -n 3 <executable>

mpiexec --hostfile hostfile -n 3 <executable>