2.4 Set up your environment
You will need to define a couple of environment variables, preferably in your login script.
If you are using some kind of batch system, make sure that they are set not only for interactive work, but also for batch use. In a distributed parallel environment, like a Linux cluster, make sure that these environment variables are set on all nodes.
All these environment variables are also automatically passed on from the master process to the child processes in case of a parallel run. Thus the values set on the node where you start the program will override any value you may have set on the nodes where the child processes are running. Typically, you should still set the environment variables on all nodes since you won't know in advance on which node the master will run.
Environment variables: ALL versions
| variable | example value | comments |
| ADFHOME | $HOME/adf2006.01 | (full path) main directory (see 2.3) |
| ADFBIN | $ADFHOME/bin | (full path) directory for scripts and binaries |
| ADFRESOURCES | $ADFHOME/atomicdata | (full path) directory with the ADF database (basis sets and so on) |
| SCMLICENSE | $ADFHOME/license | (full path) the (future) location of your license file |
Environment variables: PARALLEL versions
| variable | example value | comments |
| NSCM | (number of processors) | default number of parallel processes; do not put it in the shells's rc file |
| SCM_TMPDIR | /scratch/$USER | (full path) directory where child processes should create scratch files |
| SCM_USETMPDIR | yes | master process should also use SCM_TMPDIR |
Environment variables: PVM version
| variable | example value | comments |
| PVM_ROOT | $HOME/pvm3 | (full path) directory with PVM installation |
| PVM_ARCH | SGI6 | architecture code for your machine (NOTE: use SGI6 on SGI IRIX) |
Environment variables: MPICH version
| variable | example value | comments |
| MPIDIR | /mpich/1.2.4/ch_p4 | (full path) directory with ch_p4 MPICH installation |
| SCM_MACHINEFILE | $HOME/.machine | (full path, MPICH only) file listing nodes to use |
Environment variables: only for ADFPLT
| variable | value | comments |
| GKSGT_LIB | /usr/local/lib | (full path) directory with GKSGR lib |
