Linux中安装MPI后，运行lamboot，出现如下情形，该如何处理？

Could not resolve the hostname "localhost" that was in the host file.

Things to check:

      - is "localhost" in /etc/hosts? try "grep localhost /etc/hosts"

      - is "localhost" resolvable by DNS (or some other naming service)? try "ping localhost" or "dig localhost" or "nslookup localhost"

     以root用户打开文件/etc/hosts，在其中添加如下一句：

 127.0.0.1 localhost.localdomain localhost

退出root用户，以普通用户登陆，输入命令：ping localhost

如果出现如下结果，则表明问题已解决。

PING localhost.localdomain (127.0.0.1) 56(84) bytes of data.
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=0 ttl=64 time=0.031 ms
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=1 ttl=64 time=0.031 ms
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=2 ttl=64 time=0.033 ms
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=3 ttl=64 time=0.034 ms
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=4 ttl=64 time=0.039 ms
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=5 ttl=64 time=0.033 ms
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=6 ttl=64 time=0.038 ms
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=7 ttl=64 time=0.054 ms

 ……

再运行lamboot命令，则可实现并行计算命令。

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