Hardware Used
In theory MTS will run on the IBM S/360-67, any of the IBM S/370 series, and its successors. MTS has been run on the following computers in production, benchmarking, or trial configurations:
- IBM: S/360-67, S/370-148, S/370-168, 3033U, 4341, 4361, 4381, 3081D, 3081GX, 3083B, 3090-200, 3090-400, 3090-600, and ES/9000-720
- Amdahl: 470V/6, 470V/7, 470V/8, 5860, 5870, 5990
- Hitachi: NAS 9060
- Various S/370 emulators
The University of Michigan installed and ran MTS on the first IBM S/360-67 outside of IBM (serial number 2) in 1967, the second Amdahl 470V/6 (serial number 2) in 1975, the first Amdahl 5860 (serial number 1) in 1982, and the first factory shipped IBM 3090-400 in 1986. NUMAC ran MTS on the first S/360-67 in the UK and very likely the first in Europe. The University of British Columbia (UBC) took the lead in converting MTS to run on the IBM S/370 series (an IBM S/370-168) in 1974. The University of Alberta installed the first Amdahl 470V/6 in Canada (serial number P5) in 1975.
MTS was designed to support up to four processors on the IBM S/360-67, although IBM only produced one (simplex and half-duplex) and two (duplex) processor configurations of the Model 67. In 1984 RPI updated MTS to support up to 32 processors in the IBM S/370-XA (Extended Addressing) hardware series, although 6 processors is likely the largest configuration actually used. MTS supports the IBM Vector Facility, available as an option on the IBM 3090 and ES/9000 systems.
In early 1967 running on the single processor IBM S/360-67 at UM without virtual memory support, MTS was typically supporting 5 simultaneous terminal sessions and one batch job. In November 1967 after virtual memory support was added, MTS running on the same IBM S/360-67 was simultaneously supporting 50 terminal sessions and up to 5 batch jobs. In August 1968 a dual processor IBM S/360-67 replaced the single processor system, supporting roughly 70 terminal and up to 8 batch jobs. By late 1991 MTS at UM was running on an IBM ES/9000-720 supporting over 600 simultaneous terminal sessions and from 3 to 8 batch jobs.
MTS can be IPL-ed under VM/370, and some MTS sites did so, but most ran MTS on native hardware without using a virtual machine.
Read more about this topic: Michigan Terminal System
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