NUSERS parameter
Number of users
Summary
- Default value
- 1
- Parameter type
- System
- Where set
- On User 0's parameter line
- Related products
- All
- Introduced
- Model 204 V2.1 or earlier
Description
The total number of User Language users and Host Language Interface IFAM2 or IFAM4 threads to be supported by Model 204.
Usage notes
- The algorithm to determine if NSERVS, NUSERS, and NSUBTKS are too large is:
IF NUSERS=NSERVS NUSERS + NSUBTKS + 1 > 32767 ELSE NSERVS + NUSERS + NSUBTKS + 1 > 32767
If too many process control blocks are requested, the user receives the following message:
M204.0021: NSERVS+NUSERS(IF SWAPPING)+NSUBTKS+1 > 32767
Each server, user, pseudo subtask, and the Scheduler has a process control block. There may not be more than 32767 process control blocks.
If you receive the M204.0021 message, adjust the combination of NUSERS, NSERVS, and NSUBTKS + 1 so that it does not exceed 32767.
- NUSERS should equal the number of IODEV lines defined.
If NUSERS is set to a number greater than the number of IODEV lines, the next input line receives an error:
M204.2489: IODEV parameter expected.
If the number of IODEV lines exceeds NUSERS:
- If DUPTERM is not used, the extra IODEV lines are ignored.
- If DUPTERM is used, you are notified that not all the threads for a specified IODEV are processed.
- If DUPTERM and FUNTSKN are specified, the extra IODEV lines are used for Fast/Unload tasks, and you are notified if some other threads do not open.