修改CCFLAGS，如果用mpich，是$(HPL_DEFS) -fomit-frame-pointer -03-funroll-loops -W –Wall，
用openmpi就要修改成 $(HPL_DEFS) -03
HPL 產生器
http://www.advancedclustering.com/faq/how-do-i-tune-my-hpldat-file.html
HPCC inf 說明
http://onetfbao.spaces.live.com/blog/cns!393E9866CAB6E396!367.entry
http://www.orientsky.com.cn/_new/Printpage.asp?ID=1496
http://onemansjourneyintolinux.blogspot.com/2009/01/hpl-tuning.html
如何做Linpack测试及性能优化
曹振南
http://www.netlib.org/benchmark/hpl/faqs.html
