New versions of the IBM XL compilers are now available for use
on the BGL.

By default the following commands:

blrts_c89       blrts_f77     
blrts_c99       blrts_xlf90   
blrts_cc        blrts_f90     
blrts_xlC       blrts_xlf95   
blrts_xlc++     blrts_f95     
blrts_xlc       blrts_fort77  
                blrts_xlf

invoke the 7.0 version of the C/C++ compilers and
the 9.1 version of the Fortran compilers.

The new version 8.0 C/C++ compilers can be invoked by their full
pathname:

/opt/ibmcmp/vacpp/bg/8.0/bin/blrts_XXX

or by modifying your path setting with the command:

set path=(/opt/ibmcmp/vacpp/bg/8.0/bin $path)

Similarly, the new version 10.1 Fortran compilers can be invoked by
their full pathname:

/opt/ibmcmp/xlf/bg/10.1/bin/blrts_XXX

or by modifying your path setting with the command:

set path=(/opt/ibmcmp/xlf/bg/10.1/bin $path)

Complete documentation for all the compilers is at:
 http://scv.bu.edu/SCV/Archive/IBM/BGL/LANGUAGES.html

In a few weeks we will be updating the Blue Gene system software
from Driver V1R2M1 to Driver V1R3M0. At that time the old compilers
will be obsolete and the new ones will be in your PATH by default.

Please send questions and report problems to help@twister.bu.edu.

                --BGL Admins

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