Difference between revisions of "LAPACK"

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!Download Source:
 
!Download Source:
 
| http://www.netlib.org/lapack/lapack-{{Lapack-Version}}.tgz
 
| http://www.netlib.org/lapack/lapack-{{Lapack-Version}}.tgz
−
|-
 
 
|}
 
|}
  
−
= Introduction to LAPACK =
+
----
  
−
LAPACK is a '''L'''inear '''A'''lgebra '''PACK'''age that provides routines for solving systems of simultaneous linear equations, least-squares solutions of linear systems of equations, eigenvalue problems, and singular value problems. The associated matrix factorizations (LU, Cholesky, QR, SVD, Schur, generalized Schur) are also provided, as are related computations such as reordering of the Schur factorizations and estimating condition numbers. Dense and banded matrices are handled, but not general sparse matrices. In all areas, similar functionality is provided for real and complex matrices, in both single and double precision.  LAPACK routines are written so that as much as possible of the computation is performed by calls to the [[BLAS]].
+
{{Package-Introduction|LAPACK is a '''L'''inear '''A'''lgebra '''PACK'''age that provides routines for solving systems of simultaneous linear equations, least-squares solutions of linear systems of equations, eigenvalue problems, and singular value problems. The associated matrix factorizations (LU, Cholesky, QR, SVD, Schur, generalized Schur) are also provided, as are related computations such as reordering of the Schur factorizations and estimating condition numbers. Dense and banded matrices are handled, but not general sparse matrices. In all areas, similar functionality is provided for real and complex matrices, in both single and double precision.  LAPACK routines are written so that as much as possible of the computation is performed by calls to the [[ATLAS]].
  
−
LAPACK libraries can also be obtained from ATLAS or the microprocessor vendor's math library, such as AMD's [[ACML]].
+
LAPACK libraries can also be obtained from ATLAS (incomplete) or the microprocessor vendor's math library, such as AMD's [[ACML]].|http://www.netlib.org/lapack/}}
  
−
<b>Homepage:</b> http://www.netlib.org/lapack/
+
{{Note|These instructions do not install the resulting libraries. Once the LAPACK libraries are built, build [[ATLAS]]. You will then have optimized ATLAS and LAPACK libraries installed.}}
  
−
= Dependencies =
+
== Dependencies ==
  
−
== Required ==
+
=== Required ===
  
 
One of the following is required to build LAPACK:
 
One of the following is required to build LAPACK:
  
−
[[GCC-3.3]] built with F77 support
+
* [[GCC-3.3]] built with F77 support
−
[[GCC]] built with gfortran support
+
* [[GCC]] built with gfortran support
  
−
== Optional ==
+
== Configuration Information ==
−
 
 
−
Either [[BLAS]] or [[ACML]] are recommended otherwise LAPACK will install an unoptimized version of this library.
 
−
 
 
−
= Configuration Information =
 
  
 
There is no configure script for LAPACK.  All options are set in the make.inc file.  You may wish to modify the following options.
 
There is no configure script for LAPACK.  All options are set in the make.inc file.  You may wish to modify the following options.
Line 37: Line 32:
 
|}
 
|}
  
−
= Non-Multilib or Multilib =
+
{{Note|Do not remove the source tree if you plan to build the LAPACK 95 interface.}}
 +
 
 +
== Non-Multilib ==
  
 
First we create a make.inc to use in our build.
 
First we create a make.inc to use in our build.
  
−
  cp -v make.inc.example make.inc
+
  cp -v make.inc.example make.inc &&
 +
sed -i 's@../../blas$(PLAT).a@/usr/lib/blas/atlas/libblas.a@' make.inc &&
 +
sed -i "s/OPTS    = -funroll-all-loops/& ${CFLAGS} -fPIC/" make.inc
 +
sed -i "s/NOOPT    =/& -fPIC/" make.inc &&
 +
sed -i "s/EXT_ETIME/INT_CPU_TIME/" make.inc
  
 
If you haven't built the F77 compiler provided by gcc-3.3, you need to tell LAPACK that you're using gfortran.
 
If you haven't built the F77 compiler provided by gcc-3.3, you need to tell LAPACK that you're using gfortran.
Line 47: Line 48:
 
  sed -i 's@g77@gfortran@g' make.inc
 
  sed -i 's@g77@gfortran@g' make.inc
  
−
If you do not have a system BLAS library, tell LAPACK to build its own, unoptimized library:
+
Compile the LAPACK libraries:
 +
 
 +
make lib
 +
 
 +
Install the documentation that comes with the LAPACK library:
 +
 
 +
install -v -m755 -d /usr/share/doc/LAPACK-{{Lapack-Version}}/html &&
 +
install -v INSTALL/lawn81.{pdf,ps} /usr/share/doc/LAPACK-{{Lapack-Version}}/ &&
 +
for doc in html/*.html; do
 +
  cp -v $doc /usr/share/doc/LAPACK-{{Lapack-Version}}/html
 +
done
  
−
sed -i 's@lib: lapacklib tmglib@lib: blaslib blas_testing lapacklib tmglib lapack_testing@' Makefile
+
== Multilib ==
  
−
If you installed the [[BLAS]] library provided by Atlas, tell LAPACK to use this library.  Replace libf77blas.a with the name of your system BLAS FORTRAN library.
+
First we create a make.inc to use in our build.
  
−
  sed -i 's@../../blas$(PLAT).a@/usr/lib/libf77blas.a@' make.inc
+
cp -v make.inc.example make.inc &&
 +
  sed -i "s/NOOPT    =/& -fPIC/" make.inc &&
 +
sed -i "s/EXT_ETIME/INT_CPU_TIME/" make.inc
  
−
If you installed the BLAS library provided by [[ACML]], tell LAPACK to use this library.  Replace </path/to/libacml.a> in the command with the actual path to your ACML library.
+
If you haven't built the F77 compiler provided by gcc-3.3, you need to tell LAPACK that you're using gfortran.
  
−
  sed -i 's@../../blas$(PLAT).a@</path/to/libacml.a>@' make.inc
+
  sed -i 's@g77@gfortran@g' make.inc
  
−
<b>NOTE:</b> If you want to build and execute the LAPACK test suite, <i>it will fail if you're using the ATLAS BLAS library.</i>  From the LAPACK release notes, "The LAPACK test suite needs to be modified to allow for the inversion of diagonal elements, as ATLAS's implementation of xTRSM is valid."  There is currently no patch available so you will need to edit the code manually or skip the test suite.
+
=== 32Bit ===
  
−
If not using the ATLAS BLAS library, tell LAPACK to build and execute the test suite.
+
Add your build options to the make file:
  
−
  sed -i 's@lib: lapacklib tmglib@lib: lapacklib tmglib lapack_testing@' Makefile
+
  sed -i 's@../../blas$(PLAT).a@/usr/lib/blas/atlas/libblas.a@' make.inc &&
 +
sed -i "s/OPTS    = -funroll-all-loops/& ${BUILD32} -fPIC/" make.inc
  
 
Compile the LAPACK libraries:
 
Compile the LAPACK libraries:
Line 69: Line 83:
 
  make lib
 
  make lib
  
−
Move the libraries to a standard location:
+
=== N32 ===
  
−
  cp -v lapack_LINUX.a /usr/lib/liblapack.a &&
+
Add your build options to the make file:
−
  cp -v tmglib_LINUX.a /usr/src/libtmg.a
+
 
 +
  sed -i 's@../../blas$(PLAT).a@/usr/lib32/blas/atlas/libblas.a@' make.inc &&
 +
sed -i "s/OPTS    = -funroll-all-loops/& ${BUILDn32} -fPIC/" make.inc
 +
 
 +
Compile the LAPACK libraries:
 +
 
 +
make lib
 +
 
 +
=== 64Bit ===
 +
 
 +
Add your build options to the make file:
 +
 
 +
  sed -i 's@../../blas$(PLAT).a@/usr/lib64/blas/atlas/libblas.a@' make.inc &&
 +
sed -i "s/OPTS    = -funroll-all-loops/& ${BUILD64} -fPIC/" make.inc
 +
 
 +
Compile the LAPACK libraries:
 +
 
 +
make lib
  
 
Install the documentation that comes with the LAPACK library:
 
Install the documentation that comes with the LAPACK library:
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  done
 
  done
  
−
= Contents =
+
[[Category:Science_Engineering]]
−
 
 
−
{|style="text-align: left;"
 
−
|-valign="top"
 
−
! Installed Libraries:
 
−
|liblapack.a, libtmg.a
 
−
|}
 
−
 
 
−
== Short Description ==
 
−
 
 
−
{|style="text-align: left;"
 
−
|-valign="top"
 
−
!liblapack.a
 
−
|Library containing the linear algebra functions.
 
−
|-valign="top"
 
−
!libtmg.a
 
−
|Library containg the test matrix generators used in the LAPACK test suite.
 
−
|}
 

Latest revision as of 17:39, 19 March 2009

Download Source: http://www.netlib.org/lapack/lapack-3.1.1.tgz

Introduction to LAPACK

LAPACK is a Linear Algebra PACKage that provides routines for solving systems of simultaneous linear equations, least-squares solutions of linear systems of equations, eigenvalue problems, and singular value problems. The associated matrix factorizations (LU, Cholesky, QR, SVD, Schur, generalized Schur) are also provided, as are related computations such as reordering of the Schur factorizations and estimating condition numbers. Dense and banded matrices are handled, but not general sparse matrices. In all areas, similar functionality is provided for real and complex matrices, in both single and double precision. LAPACK routines are written so that as much as possible of the computation is performed by calls to the ATLAS.

LAPACK libraries can also be obtained from ATLAS (incomplete) or the microprocessor vendor's math library, such as AMD's ACML.

Project Homepage: http://www.netlib.org/lapack/

Caution.png

Note

These instructions do not install the resulting libraries. Once the LAPACK libraries are built, build ATLAS. You will then have optimized ATLAS and LAPACK libraries installed.

Dependencies

Required

One of the following is required to build LAPACK:

  • GCC-3.3 built with F77 support
  • GCC built with gfortran support

Configuration Information

There is no configure script for LAPACK. All options are set in the make.inc file. You may wish to modify the following options.

PLAT= appends the architecture to the library name. Beneficial if building LAPACK for more than one architecture.
OPTS= sets the options passed to the FORTRAN compiler.
Caution.png

Note

Do not remove the source tree if you plan to build the LAPACK 95 interface.

Non-Multilib

First we create a make.inc to use in our build. 

cp -v make.inc.example make.inc &&
sed -i 's@../../blas$(PLAT).a@/usr/lib/blas/atlas/libblas.a@' make.inc &&
sed -i "s/OPTS     = -funroll-all-loops/& ${CFLAGS} -fPIC/" make.inc
sed -i "s/NOOPT    =/& -fPIC/" make.inc &&
sed -i "s/EXT_ETIME/INT_CPU_TIME/" make.inc

If you haven't built the F77 compiler provided by gcc-3.3, you need to tell LAPACK that you're using gfortran. 

sed -i 's@g77@gfortran@g' make.inc

Compile the LAPACK libraries: 

make lib

Install the documentation that comes with the LAPACK library: 

install -v -m755 -d /usr/share/doc/LAPACK-3.1.1/html &&
install -v INSTALL/lawn81.{pdf,ps} /usr/share/doc/LAPACK-3.1.1/ &&
for doc in html/*.html; do
  cp -v $doc /usr/share/doc/LAPACK-3.1.1/html
done

Multilib

First we create a make.inc to use in our build. 

cp -v make.inc.example make.inc &&
sed -i "s/NOOPT    =/& -fPIC/" make.inc &&
sed -i "s/EXT_ETIME/INT_CPU_TIME/" make.inc

If you haven't built the F77 compiler provided by gcc-3.3, you need to tell LAPACK that you're using gfortran. 

sed -i 's@g77@gfortran@g' make.inc

32Bit

Add your build options to the make file: 

sed -i 's@../../blas$(PLAT).a@/usr/lib/blas/atlas/libblas.a@' make.inc &&
sed -i "s/OPTS     = -funroll-all-loops/& ${BUILD32} -fPIC/" make.inc

Compile the LAPACK libraries: 

make lib

N32

Add your build options to the make file: 

sed -i 's@../../blas$(PLAT).a@/usr/lib32/blas/atlas/libblas.a@' make.inc &&
sed -i "s/OPTS     = -funroll-all-loops/& ${BUILDn32} -fPIC/" make.inc

Compile the LAPACK libraries: 

make lib

64Bit

Add your build options to the make file: 

sed -i 's@../../blas$(PLAT).a@/usr/lib64/blas/atlas/libblas.a@' make.inc &&
sed -i "s/OPTS     = -funroll-all-loops/& ${BUILD64} -fPIC/" make.inc

Compile the LAPACK libraries: 

make lib

Install the documentation that comes with the LAPACK library: 

install -v -m755 -d /usr/share/doc/LAPACK-3.1.1/html &&
install -v INSTALL/lawn81.{pdf,ps} /usr/share/doc/LAPACK-3.1.1/ &&
for doc in html/*.html; do
  cp -v $doc /usr/share/doc/LAPACK-3.1.1/html
done
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