List of environment variables
| Environment variable | Typical value | Description |
| NSCM | 8 | Number of parallel processes to use |
| SCM_IOBUFFERSIZE | 32 | Size of memory buffer (MB) for KF files |
| SCM_VECTORLENGTH | 128 | Block length used |
| SCM_TMPDIR | /scratch/$USER | path to fast scratch directory (2.8) |
| TMPDIR | /tmp | path to fast scratch directory (2.8) |
| SCM_USETMPDIR | yes | Master also uses SCM_TMPDIR (2.8) |
| SCM_RCV_TIMEOUT | 900 | (PVM only) time (seconds) to wait for messages |
| SCM_MAX_RCV_TIMEOUTS | 2 | (PVM only) maximum number of timeouts |
| SCM_ALARMTIME | 1800 |
time (seconds) to wait for messages using
ALARM signal, 0 disables timeouts [currently the default setting is zero, because this feature may not work on some platforms] |
| SCMBCOP | 1 | broadcast algorithm |
| SCMGAOP | 5 | gather algorithm |
| SCMCBOP | 1 | combine alogrithm |
| SCMSPAWNSCRIPT | adfs | script to start child processes |
| ADFBIN | $ADFHOME/bin | directory with executables |
| SCM_DEBUG | |
set to debug SCM_TMPDIR |
| TEMPDIR | |
old name for SCM_TMPDIR |
| SCM_NOMEMCHECK | |
disable memory checks |
| SCM_NODOMAINCHECK | |
disable domain check for license |
