IBM 5280 Programmer's Manual page 176

Appendix F. Storage Estimates for DOSjVSE
Operating System Requirements
Storage Estimates
The DOS/VSE compiler operates under the control of the DOS/VSE
Operating System. The compiler requires 192K (196,608) bytes of main
storage.
The storage estimates given in this section supplement the system figures
given in the individual Storage Estimates manuals for your specific operating
system. Use these manuals to determine the amount of storage needed for the
operating system. Then use the figures given here to determine the additional
amounts needed for the IBM 5280 COBOL Compiler.
Estimates are given for the amount of auxiliary storage required for compiler
data sets, and the amount of additional work space needed for compilation.
Auxiliary Storage Requirements for Compiler and Library Residence
The auxiliary storage required by the 5280 COBOL compiler in the Core
Image Library is: 660 blocks.
Work Space and Load Module Output Requirements
The COBOL compiler requires additional work space beyond the dynamic
storage needed for execution. The work space needed varies with the number
of source records. The figures below estimate the work space the compiler
might require to process typical source programs. According to the type and
combination of statements involved, however, the storage requirements may
vary widely.
Filename Block Size Number of Blocks
*
IJSYSOI 512
86 - 360
IJSYS02 512 230 - 772
IJSYS03 512 145 - 572
IJSYS04 512 64 - 293
IJSYS05 512 174 - 578
LDOUT ILDOVL Y 128 214 - 340
*
The numbers given are for two specific programs. The smaller number is
the number of blocks for a program with 1,186 source records (753
statements) and a load module size of 27K. The larger number is for a
program with 2,773 records (2,600 statements) and a load module size of
43K.
If your program is segmented, you will have additional requirements for
LDOVLY, which could even exceed those of LDOUT, depending on the size
and number of overlay segments.
Appendix F. Storage Estimates for DOS/VSE F- 1