ATLAS安装配置指南

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#请注意，本ATLAS配置只配置了C接口而没有配置Fortran接口（疑似没有找到合适的Fortran编译器或者没有配置好config）

一.首先需要关闭cpu throtting，不然将无法生成MAKE.INC导致安装失败

1. Edit /etc/default/grub
2. Find line with: GRUB_CMDLINE_LINUX_DEFAULT
3. Append the following to args: intel_pstate=disable
4. Update grub: update-grub
5. Reboot

安装：sudo apt-get install cpufrequtils
信息：cpufreq-info

确认安装好了以后，执行：

cpufreq-set -g performance

到这里，CPU已经被调成了一直保持最高频率，这样子CPU温度将会较高，你可以选择安装完成后将其频率调回正常状态。

二.安装 gfortran

gfortran可以编译fortran文件

sudo apt-get gfortran

二.安装ATLAS

这里本人使用的是默认安装

**************************************************
   mkdir my_build_dir ; cd my_build_dir
   /path/to/ATLAS/configure -C if gfortran
   make              ! tune and compile library
   make check        ! perform sanity tests
   make ptcheck      ! checks of threaded code for multiprocessor systems
   make time         ! provide performance summary as % of clock rate
   make install      ! Copy library and include files to other directories
**************************************************

安装完成后执行

make check

结果如下：

DONE BUILDING TESTERS, RUNNING:
SCOPING FOR FAILURES IN BIN TESTS:
fgrep -e fault -e FAULT -e error -e ERROR -e fail -e FAIL \
        bin/sanity.out
8 cases: 8 passed, 0 skipped, 0 failed
4 cases: 4 passed, 0 skipped, 0 failed
8 cases: 8 passed, 0 skipped, 0 failed
4 cases: 4 passed, 0 skipped, 0 failed
8 cases: 8 passed, 0 skipped, 0 failed
4 cases: 4 passed, 0 skipped, 0 failed
8 cases: 8 passed, 0 skipped, 0 failed
4 cases: 4 passed, 0 skipped, 0 failed
DONE
SCOPING FOR FAILURES IN CBLAS TESTS:
fgrep -e fault -e FAULT -e error -e ERROR -e fail -e FAIL \
        interfaces/blas/C/testing/sanity.out | \
                fgrep -v PASSED
Make.top:27: recipe for target 'sanity_test' failed
make[1]: [sanity_test] Error 1 (ignored)
DONE
SCOPING FOR FAILURES IN F77BLAS TESTS:
fgrep -e fault -e FAULT -e error -e ERROR -e fail -e FAIL \
        interfaces/blas/F77/testing/sanity.out | \
                fgrep -v PASSED
Make.top:27: recipe for target 'sanity_test' failed
make[1]: [sanity_test] Error 1 (ignored)
DONE
make[1]: Leaving directory '/home/masterz/ATLAS'
这里要注意的是，此时的ATALS已经完全配置成功了，输出的 Make.top:27: recipe for target 'sanity_test' failed指的是没有找到错误，这和官方文档有些出入，一开始本人还以为配置fortran出现了问题，但是查询后发现对应的测试样例日志已经生成，并且测试样例全部通过。而bash中如果没有找到匹配项就会输出receipe failed，不用担心。

更详细的配置内容可以参考下载的ATALS解压后目录下的./doc/atlas_install.pdf

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