/usr/bin/ld cannot find -lf2c for CentOS 5

If you encounter this error "/usr/bin/ld: cannot find -lf2c", you are obviously missing f2c package. Do download the f2c-20031026-3.0.1.el5.x86_64.rpm package found at  f2c-20031026-3.0.1.el5.x86_64.rpm - CentOS 5 (RHEL 5) - ATrpms

# wget http://dl.atrpms.net/el5-x86_64/atrpms/stable/f2c-20031026-3.0.1.el5.x86_64.rpm
# rpm -Uvh f2c-20031026-3.0.1.el5.x86_64.rpm
# ldconfig

Compiling MPI BLACS on CentOS 5

An interesting article from Linux Cluster on Compiling MPI BLACS on CentOS 5. BLACS is compiled with OpenMPI 1.4.x with g77 and gfortran.

For more information see Compiling BLACS on CentOS 5

Compiling LAPACK on CentOS 5

Download the lapack latest stable version (lapack-3.3.0.tgz) from http://www.netlib.org/lapack/

# cd /root
# tar -xzvf lapack-3.3.0.tgz
# cd /root/lapack-3.3.0
# cp make.inc.example make.inc

Assuming Edit make.inc. Assuming the Compiling ATLAS on CentOS 5

#BLASLIB = ../../blas$(PLAT).a
BLASLIB = /usr/local/atlas/lib/libf77blas.a /usr/local/atlas/lib/libatlas.a

Compile lapack package

# make

Copy the libraries to

# mkdir /usr/local/lapack/lib
# cp /root/lapack-3.3.0/*.a /usr/local/lapack/lib
# cd /usr/local/lapack/lib/
# chmod 555 *.a

Other related Information

1. Compiling ATLAS on CentOS 5

Compiling ATLAS on CentOS 5

This tutorial is to help you compile ATLAS (Automatically Tuned Linear Algebra Software) with gFortran. For those who are using Intel Compiler, you have the reliable Intel MKL (Math Kernel Library)

First thing first, some comparison between ATLAS and MKL.

ATLAS

ATLAS The Automatically Tuned Linear Algebra Software (ATLAS) provides a complete implementation of the BLAS API 3 and a subset of LAPACK 3. A big number of instructions-set specific optimizations are used throughout the library to achieve peak-performance on a wide variety of HW-platforms.

ATLAS provides both C and Fortran interfaces.

ATLAS is available for all HW-platforms capable of running UNIX or UNIX-like operating systems as well as Windows (tm).

MKL

Intel's Math Kernel Library (MKL) implements a set of linear algebra, fast Fourier transforms and vector math functions. It includes LAPACK 3, BLAS 3 and extended BLAS and provides both C and Fortran interfaces.

MKL is available for Windows (tm) and Linux (x86/i686 and above) only.

Download the latest stable package from ATLAS (http://sourceforge.net/projects/math-atlas/files/Stable/). The current stable version is atlas3.8.0.tar.gz. Do note that ATLAS don't like configuration on its original location, hence the need to create ATLAS_BUILD directory.

# cd /root
# tar -xzvf atlas3.8.3.tar.gz
# mkdir /root/ATLAS_BUILD
# cd /root/ATLAS_BUILD
# /root/ATLAS/configure

You will need to turn off CPU Throttling. For CentOS and Fedora, you will use

# /usr/bin/cpufreq-selector -g performance

For more information, you can see my blog entry Switching off CPU Throttling on CentOS or Fedora

Compile ATLAS

make
make check
make ptcheck
make time
make install

By default, ATLAS installed to /usr/local/atlas

Finally remember to add /usr/local/atlas/lib to your LD_LIBRARY_PATH

Switching off CPU Throttling on CentOS or Fedora

Under CentOS and Fedora, you can switch off CPU Throttling or "Dynamic Frequency Scaling" to maximise your CPU performance. For more information of CPU Throttling, you can also read Dynamic Frequency Scaling from Wikipedia. Just type the command

# /usr/bin/cpufreq-selector -g performance

For Debian-based hardware, you may want to take a look at
Looking at Xorg High CPU Usage Issue for netbook