The NJOY Nuclear Data Processing System, Volume 1:User's Manual

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This code is extremely “1/0 bound.” Run times can often be reduced by re-
questing larger input/output buffers from the system. The blocked-binary mode
should be used whenever possible. Also, 1/0 time in BROADR can be reduced by
allocating more storage if available (see /STORE/ and NAMAX in BROADR).
VI. CODE CONVERSION
The reference version of NJOY operates on CDC-7600 equipment at Los Alamos.
The code includes comment cards that allow many of the changes required to
convert to an IBM system to be made very simply. A typical comment-card ex-
ample follows.
CCDC
CCDC
CIBM
c
CIBM
.
In the (10/81) version
ing and 177 blocks of
column 1 of all card
.
INTEGER H(5)
REAL*8 H(5)
there are 146 such blocks of CDC machine-dependent cod-
IBM coding. To convert to IBM form, insert a “C” in
images bracketed with “CCDC” cards, and remove the “C”
from column 1 of all cards bracketed by “CIBM” cards. This can be done with a
simple preprocessing program such as the one listed in Appendix D.
Additional changes may be required in BANNER (time, date, machine), ERROR
(system fatal exit, traceback), character handling for free-form input (FREE,
PACK), input/output routines (OPENZ, CLOSEZ, REPOZ, SKIPRZ, REED, RITE), and
mathematical subroutines (E1,GAMI). The largest group of system-dependent
routines has to do with plotting. COVR uses the DISSPLA software system,
which is available at many installations. DTFR uses a local SC-4020 library,
which is not widely available; however, the plotting calls have been left in
the
the
Los
code as a guide for the conversion to other systems.
As a demonstration of portability, versions of
following machines (operating systems): CDC-7600
Alamos National Laboratory, CDC-7600 (LTSS) at
NJOY have been installed on
(LTSS) and CRAY-1 (CTSS) at
the Magnetic Fusion Energy
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