Hp XC System 2.x Software Manuel d'utilisateur Page 126

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9.1.2 MLIB and Module Files
For building and running an application built against MLIB, you must have a consistent
environment. Modulefiles can make it easier to access a package; therefore, if you use
modulefiles, be sure to use a consisten t set of modulefiles.
In particular, modulefiles can be used to select a c om piler, both making its command
available in the PATH environment variable and making its shared objects available in the
LD_LIBRARY_PATH environm ent variable. MLIB has a modulefile corresponding to each
supported compiler, making its shared objects available in $LD_LIBRARY_PATH.
If modulefiles are used to facilitate the user environment, failure to use companion modulefiles
can r esult in build o r run time errors, or both. If HP MPI is used as well, it is i m portant to ensure
the mpi** compiler scripts use the intended compiler by setting the MPI_CC environment
variable, the MPI_F90 environment variable, or both. Failure to do so may cause the compiler
scripts to discover an unintend ed compiler, and thus introduce an inconsistency.
For more information, refer to the MLIB Users Guide, which is located on the HP XC
documentation CD and at the following Web site: http://www.hp.com/go/mlib.
9.2 HP MLIB for the HP XC6000 Platform
The information in this section describes how to use HP MLIB Version 1.5 in the HP XC
environment on the HP XC60 00 platform.
HP MLIB for the H P XC6000 platform suppo rts VECLIB, LAPACK, ScaLAPACK,
SuperLU_DIST, and MPI parallelism. It requires Intel compilers.
For the latest inform ation about this release of HP MLIB, refer to the HP MLIB release notes.
HP MLIB directory information is located in the /opt/mlib/README file.
This section concentrates on how to quickly get started using HP MLIB.
9.2.1 Platform Sup port
HP MLIB V1.5 for H P XC6000 supports 6 4-bit addressing and 64-bit address libraries w ith all
integer values usin g 64 bits on HP XC6000 clusters.
9.2.2 Library Support
HP MLIB V1.5 for XC6000 is a vailable as archive and shared libraries. All libraries are
installed at /opt/mlib/intel_7.1/hpmpi_2.1/lib/64 for Intel compiler version 7.1,
and at /opt/mlib/intel_8.0/hpmpi2.1/lib/64 for Intel compiler version 8.0. This
release of HP XC MLIB has the following components: VECLIB, LAPACK, ScaLAPA CK,
and SuperLU_DIST.
VECLIB LAPACK ScaLAPACK SuperLU_DIST
libveclib.a liblapack.a libscalapack.a libsuperlu_dist.a
libveclib.so liblapack.so libscalapack.so libsuperlu_dist.so
libveclib8.a liblapack8.a libscalapack8.a libsuperlu_dist8.a
libveclib8.so liblapack8.so libscalapack8.so libsuperlu_dist8.so
Note: .a = archive, .so = sha
red, xxx8.x = int 8 (all integer values using 64 bits)
9.2.3 MPI Parallelism
Internal parallelism in ScaLAPACK and SuperLU_DIST is implemented using MPI a
portable, scalable programming model that gives distributed-memory parallel programmers a
simple and flexible interface for developing parallel applications.
9-2 Using HP MLIB
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