BLAS; Atlas wins:

1. /usr/lib/libblas/libblas.so.3

Total time for all 15 tests_________________________ (sec): 62.238

Overall mean (sum of I, II and III trimmed means/3)_ (sec): 2.11989509735432

2. /usr/lib/openblas-base/libblas.so.3:

Total time for all 15 tests_________________________ (sec): 27.2746666666667

Overall mean (sum of I, II and III trimmed means/3)_ (sec): 1.61748573399343

3. /usr/lib/atlas-base/atlas/libblas.so.3:

Total time for all 15 tests_________________________ (sec): 25.804

Overall mean (sum of I, II and III trimmed means/3)_ (sec): 1.4524236231769

LAPACK, OpenBLAS seems to perform best:

1. /usr/lib/atlas-base/atlas/liblapack.so.3:

Total time for all 15 tests_________________________ (sec): 33.4963333333334

Overall mean (sum of I, II and III trimmed means/3)_ (sec): 1.85297027369235

2. /usr/lib/lapack/liblapack.so.3

Total time for all 15 tests_________________________ (sec): 23.969

Overall mean (sum of I, II and III trimmed means/3)_ (sec): 1.3878476211767

3. /usr/lib/openblas-base/liblapack.so.3:

Total time for all 15 tests_________________________ (sec): 22.1063333333333

Overall mean (sum of I, II and III trimmed means/3)_ (sec): 1.24025539442091

So worst vs best is: 22.1s vs 62.2s

]]>`./config --with`

some other options. But it was `sudo update-alternatives --config liblapack.so.3gf`

and choose `/usr/lib/lapack/liblapack.so.3gf`

to solve it. (This is now on R 3.1.1 "Sock it to Me".)
]]>