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[资源] 【分享】Reduce memory usage

文章来源:http://blog.sina.com.cn/s/blog_5f15ead20100eiyv.html

There are a few measures you can take to reduce the memory usage:
1. if you are using pools, reduce the number of pools, it requires more communication between nodes, but
    reduces the memory usage.
2. if you are using norm-conserving pseudopotentials try ultrasoft or PAW instead; more in general try to do more
   accurate test on convergence with respect to wfc and rho cutoff
3. if you have a slab geometry you may still have good results reducing the amount of vacuum (you'll have to test
    the convergence wrt the amount of vacuum)
4. if you are using a computation cluster, run the code on more processors
5. if you are using a PC, buy more RAM
6. us cg instead of david diagonalization, but only as a last measure
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hebut

木虫 (著名写手)


不错,顶
2楼2009-09-14 11:54:09
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enola

捐助贵宾 (正式写手)


★★★ 三星级,支持鼓励

应该说是很好的习惯
5楼2010-04-13 18:44:09
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简单回复
zxzj053楼
2009-09-17 09:50   回复  
  支持!!!
freshgirl4楼
2009-09-17 10:11   回复  
 
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