多台计算机上的MPICH2(HYDU_sock_connect错误) [英] MPICH2 on multiple machines (HYDU_sock_connect error)

问题描述

我正在尝试在2台不同的PC中执行MPI程序.但是，当我在pc1中运行以下命令时:

I am trying to execute an MPI program in 2 different PCs. However, when I ran this command in pc1:

mpirun -hosts user@host -n 4 bin/Demo_01.exe 

我收到此错误:

[proxy:0:0@pc2] HYDU_sock_connect (./utils/sock/sock.c:203): unable to connect from "pc2" to "pc1" (Connection refused)

[proxy:0:0@pc2] main (./pm/pmiserv/pmip.c:209): unable to connect to server ubuntu at port 57395 (check for firewalls!)

尽管我将SSH连接配置为没有密码，并且在每台计算机上都禁用了防火墙，但错误仍然存​​在.我的操作系统是Ubuntu 12.04，MPI是MPICH2.

Although I configured SSH connections as without password and disabled firewalls on each machines, the error is still there. My operating system is Ubuntu 12.04 and mpi is MPICH2.

有没有人可以帮忙?

推荐答案

已修复.在按照以下步骤操作后，错误消失了:

Fixed. After I followed these steps, the error disappeared:

1. 在两台计算机上使用相同的用户名和密码创建管理员用户帐户.
2. 通过编辑文件来定义主机名:/etc/hosts
3. 在两台计算机上全新安装ssh.
4. 配置ssh以在没有密码的情况下进行连接.为此，请点击以下链接: http://www.thegeekstuff.com/2008/11/3-steps-to-perform-ssh-login-without-password-using-ssh-keygen-ssh-copy-id/和 http://dustymabe.com/2012 /08/18/exchangeing-ssh-keys-using-ssh-copy-id/
5. 将可执行的MPI程序放置在两台计算机的相同路径中.

1. Create administrator user accounts in both machines with the same username and password.
2. Define hostnames by editing the file: /etc/hosts
3. Make a clean install of ssh in both machines.
4. Configure ssh for connecting without a password. To do this follow these links: http://www.thegeekstuff.com/2008/11/3-steps-to-perform-ssh-login-without-password-using-ssh-keygen-ssh-copy-id/ and http://dustymabe.com/2012/08/18/exchanging-ssh-keys-using-ssh-copy-id/
5. Locate the executable MPI program into the same paths in both machines.

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