gcc - BLAS-LAPACK-ATLAS-R installation with multithreading? -


i trying setup atlas, blas, lapack, , r on opensuse 12.2 server 8 core amd athlon fx-8320. have turned off cpu frequency scaling using cpufreq , script cfu paste.opensuse.org/92162247 made james mcdaniel.

so following instructions, here http://math-atlas.sourceforge.net/atlas_install/node45.html didn't need install gcc (that know yet) have gcc (suse linux) 4.7.1 20120723 installed, g++, , gfortran same version gcc.

the instructions make bogus configuration of atlas determine compiler flags use. atlas configured in instructions '../configure -b 64 -d c -dpentiumcps=2200 -fa alg -fpic'. modify think work setup ' ../configure -b 64 -t 8 -fa alg -fpic -a x86_64 -d c -dpentiumcps=3500 -si latune 1 --prefix=/usr/local/lib64 --with-netlib-lapack-tarfile=/opt/maths/lapack-3.4.2.tgz' these errors.

os configured linux (1)  assembly configured gas_x8664 (2)  vector isa extension configured  avxmac (3,504) error: enum fam=6, chip=8, mach=0 make[3]: *** [atlas_run] error 44 make[2]: *** [irunarchinfo_x86] error 2 /bin/sh: line 1: 13849 segmentation fault      ./xarchinfo_linux -a > config0.out make[3]: *** [atlas_run] error 139 make[2]: *** [irunarchinfo_linux] error 2  architecture configured  unknownx86 (35) error: enum fam=6, chip=8, mach=0 make[3]: *** [atlas_run] error 44 make[2]: *** [irunarchinfo_x86] error 2  clock rate configured 3500mhz parallel make command configured '$(make) -j 8' error: enum fam=6, chip=8, mach=0 make[3]: *** [atlas_run] error 44 make[2]: *** [irunarchinfo_x86] error 2 cannot detect cpu throttling.

atlas makes make.inc , if fgrep f77 , f77 flags 'gfortran-4.7' , '-o -mavx -fpic -m64'. maybe -mavx flag handles avxmac error? need -mavx? proceed instructions...

(not real answer, difficult read comment):

a few more considerations on dirk's recommendation use openblas.

i use openblas (on ubuntu , centos systems).

  • one consideration important me on 8 , 12 core machines openblas allows dynamic setting of number of threads use, atlas doesn't. in order set number of threads dynamicall within r, use simon fuller's openblasthreads.

  • openblas pretty straightforward build on both systems.

  • binary .deb packages available, last time checked them, had maximum possible number of threads set 2. however, going change. till now, build library source on ubuntu machines > 2 cores.


Comments

Post a Comment

Popular posts from this blog

ios - iPhone/iPad different view orientations in different views , and apple approval process -

i force app's home screen portrait , other views landscape. apple rejects app if this? if not , how force first screen launch in portrait mode? , force other screens launch in landscape. this not duplicate question search every possible answer in website. i force app's home screen portrait , other views landscape. apple rejects app if this? no apple not reject app this. have lot of apps doesn't support orientation. forcing on 1 screen won't cause app reject. if not , how force first screen launch in portrait mode? , force other screens launch in landscape. can on write : -(nsuinteger)supportedinterfaceorientations; function.
Read more

java Extracting Zip file -

i'm looking way extract zip file. far have tried java.util.zip , org.apache.commons.compress, both gave corrupted output. basically, input zip file contain 1 single .doc file. java.util.zip: output corrupted. org.apache.commons.compress: output blank file, 2 mb size. so far commercial software winrar work perfectly. there java library make use of this? this method using java.util library: public void extractzipnative(file filezip) { zipinputstream zis; stringbuilder sb; try { zis = new zipinputstream(new fileinputstream(filezip)); zipentry ze = zis.getnextentry(); byte[] buffer = new byte[(int) ze.getsize()]; fileoutputstream fos = new fileoutputstream(this.tempfolderpath+ze.getname()); int len; while ((len=zis.read(buffer))>0) { fos.write(buffer); } fos.flush(); fos.close(); } catch (filenotfoundexception e) { // todo auto-generated catch block ...
Read more

C# WinForm - loading screen -

i ask how make loading screen (just picture or something) appears while program being loaded, , disappears when program has finished loading. in fancier versions, have seen process bar (%) displayed. how can have that, , how calculate % show on it? i know there form_load() event, not see form_loaded() event, or % property / attribute anywhere. all need create 1 form splash screen , show before main start showing landing page , close splash once landing page loaded. class splashform { //delegate cross thread call close private delegate void closedelegate(); //the type of form displayed splash screen. private static splashform splashform; static public void showsplashscreen() { // make sure launched once. if (splashform != null) return; thread thread = new thread(new threadstart(splashform.showform)); thread.isbackground = true; thread.setapartmentstate(apartmentstate.sta); thread....
Read more