21.4.18 Miscellaneous parameters

PARAM,code1=value,code2=value$\ldots$

Redefine system parameters. If no codes are specified, the default values are displayed. The following codes are allowed:

LSEG:

disc sector length

INTREL:

number of integers per REAL*8 word

IVECT=0:

scalar machine

IVECT=1:

vector machine

MINVEC:

call MXMB in coupling coefficient routines if vector length larger than this value.

IBANK:

number of memory banks for vector machines. If IBANK$>$1, vector strides which are multiples of IBANK are avoided where appropriate.

LTRACK:

number of REAL*8 words per track or block (for file allocation)

LTR:

determines how matrices are stored on disc. If LTR=LSEG, all matrices start at sector boundaries (which optimizes I/O), but unused space is between matrices (both on disc and in core). With LTR=1 all matrices are stored dense. This might increase I/O if much paging is necessary, but reduce I/O if everything fits in core.

NCPUS:

Maximum number of CPUs to be used in multitasking.