Nine Rivers

1. apt-get install mpich2 (remove other implementation to prevent trouble)
2. create .mpd.conf file under home dir ~/ , add a line “password=qwert” (replace qwert with any other texts)
3. create a hostfile or machine file (e.g. mpd.hosts) with node names listed one per line. (this file can be in any folder)
4. start mpd. There is a script shipped with mpich2 “mpdboot”. It accept some options. “mpdboot -f mpd.hosts -n #” with #<= number of nodes listed in mpd.hosts file. This command will start mpd on all the nodes if ssh or rsh is set correctly (without password).
5 use mpdtrace to verify the node names (nodes having been added to the mpd ring, ready to be used in the following mpirun calls).
6 mpirun -np N -host node1,node2 ./program (it’s not necessary to use all the nodes in the ring, but some of them is fine)

经常在C++程序中加入中文注释，但是如果使用不同的编辑器，编码识别或转换不当，会导致非ASCII字符乱码。

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Python的集成开发环境不少，有商业的WingIDE（不要用它们那个缩水的免费版，没有语法提示），也有很多免费的。我使用过一些，现在直接告诉你最好用的。如果你不想自己费力气去测试你自己最喜欢的一款，那么请直接选择Eclipse+PyDev(各种平台)或者PyScripter(Windows平台)。它们不会让你失望，因为无论调试，语法加亮，自动提示，配色方案，外挂工具，命令行窗口，todo，帮助等功能一应俱全，而且免费！希望我的推荐可以省去您一点时间。如果哪位朋友发现更好的（综合品质），请推荐给我。

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