The HP XC cluster comes with a modulefile for HP-MPI. The mpi modulefile is used to set up the necessary environment to use HP-MPI, such as the values of the search paths for header and library files.

Refer to Chapter 8 for information and examples that show how to build and run an HP-MPI application.

3.7.1.8 Intel Fortran and C/C++Compilers

Intel Fortran compilers (Version 7.x and greater) are supported on the HP XC cluster. However, the HP XC cluster does not supply a copy of Intel compilers. Intel compilers must be obtained directly from the vendor. Refer to Intel documentation for information about using these compilers.

3.7.1.9 PGI Fortran and C/C++ Compilers

PGI Fortran 95, Fortran 77, and C/C++ compilers are supported on the HP XC cluster. However, the HP XC cluster does not supply a copy of PGI compilers. PGI compilers must be obtained directly from the vendor. Refer to PGI documentation for information about using these compilers.

3.7.1.10 GNU C and C++ Compilers

The GNU C and C++ compilers are supported on the HP XC cluster. The HP XC cluster supplies copies of the GNU C and C++ compilers.

3.7.1.11 GNU Parallel Make

The GNU parallel Make command is used whenever the make command is invoked. GNU parallel Make provides the ability to do a parallel Make; however, all compiling takes place on the login node. Therefore, whether a parallel make improves build time depends upon how many processors are on the login node and the load on the login node.

Information about using the GNU parallel Make is provided in Section 3.9.1.

For further information about using GNU parallel Make, refer to the make manpage. For additional sources of GNU information, refer to the references provided in the front of this manual, located in About This Document.

3.7.1.12 MKL Library

MKL is a math library that references pthreads, and in enabled environments, can use multiple threads. MKL can be linked in a single-threaded manner with your application by specifying the following in the link command:

•On XC3000 and XC4000 systems:

-L/opt/intel/mkl70/lib/32 -lmkl_ia32 -lguide -pthread

•On XC6000 systems:

-L/opt/intel/mkl70/lib/64 -lmkl_ipf -lguide -pthread

3.7.1.13 ACML Library

HP XC supports the AMD Core Math Library (ACML library) on XC4000.

3.7.1.14 Other Libraries

Other libraries can be used as they would on any other system. However they must contain single processor routines and have no dependencies on another message passing system.

Developing Applications 3-7