IBM 1130 User Manual page 462

Computing system

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STACKED JOBS OR THE INPUT STREAM

Figure 55.1 shows a schematic view of a stack of

Translate an Assembler Language source pro-

gram into an object program (subjob 1)

Store the assembled object program (subjob 2)

Execute the program (subjob 3)

Store a program that had earlier been dumped

onto cards (subjob 1)

Compile a FORTRAN program (subjob 1)

Execute it (subj ob 2)

Here, the reason for the job/subjob concept can

be seen clearly. If there were an error in subjob 1

of job 1, the assembly, you would not want to con-

tinue with the next two subj obs. The results would

be meaningless.

If those first three items had been made jobs

rather than subjobs, the Monitor would have tried to

perform the second two tasks even though the first

However, because they are all subjobs,

an error condition encountered in anyone subjob

would cause the Monitor to abandon the remaining

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