Page of GC20-1821-3 As Updated April 1, 1981 by TNL GN25-0840 multiprocessing MVS dynamically transferring control to or
from native mode 135-136.1
for MVS V=R virtual machine 138-138.2
uniprocessor mode, VM/370 restrictions
137-138
virtual machine, directory entry
examples 125-126 MVS/System Extensions support, enabling by
use of 370E option 42.2 MVT OS/VS; virtual machine; VM/370) ISAM, using under VM/370 41 N
NCP, mode, defining lines for
multiple-access virtual machine 27
Network Control program NCP)
nonpaging mode, initiating, for VS1 112
non-switched lines, defining for
multiple-access virtual machine 29
o
operating systems
alternating between, technique for
24-26
supported under VM/370 2
operation
of DOS/VS virtual machine 90-93 of VM/370 virtual machine 54-56
operator console
defining
for DOS/VS virtual machine 85
for OS/VS virtual machine 127 OPTION control statement
example, defining VM/370 virtual machine
51
unique considerations
for virtual machine operating systems 40-42 for virtual machine operating systems 40 for virtual machine operating systems 40-42.2 options
specifying for DOS/VS virtual machine 72 OS/VS virtual machine 108-109 OS OS/VS) ASP, using under VM/370 31-33
files, using T-disk space for 18 ISAM, using under VM/370 41 OS/MFT (see MFT; OS/VS; virtual machine; VM/370) --- OS/MVT (§gg MVT; OS/VS; virtual machine; VM/370) oS/PCP (§gg PCP; OS/VS; virtual machine; VM/370) OS/VS application programs, designing to run
efficiently under VM/370 4 AUTOLOG facility, to automatically
initiate as/vs under VM/370 46-48 double spooling under VM/370·, eliminating by specifying DEDICATE
control statement 44 dynamically transferring control to or
from native mode 135-136.1 ISAM, using under VM/370 41 nucleus, relocating page zero to run
under VM/370 42
printing abend dumps under VM/370 5
system generation under VM/370 115-124 OS/VS recommendations 108-109 preparation 116-117
selecting number of terminals 117
stage I execution in CMS virtual
machine 122
stage I execution in OS/VS virtual
machine 123
stage I input preparation 121-122
stage I processing in CMS virtual
machine 121
stage II execution 124
stage II input preparation 123
stage II processing 123
starter system loading 119-120 starter system restoring 119
starter system volume initialization
117-118
using VM/370 utilities and service
programs 120-121 virtual machines required 116 VM/370 recommendations 106 VS1 handshaking (major discussion) 110-115 system residence volume, accessing
126-127
virtual machine 107-138 accessing system residence volume
126-127
alternating technique between CMS and OS/VS 133-135
communicating with CP 131-132
defining operator's console 127
defining virtual devices 127-128
description (introductory) 107 disconnected operation 135-137
disconnected operation 136.3-137
IPL 129-130 IPL example 130-131 job entry and output retrieval 129
operating techniques 130-131 preparing and submitting job stream
128
restrictions when running MVS in
uniprocessor mode 137-138
running multiple systems 135-136
running multiple systems 136.2-136.3
using in batch mode 132
using spool files 128 using to develop and test programs
137 1UU IBM VM/370 Systems in a virtual Machine

Page of GC20-1821-3 As Updated April 1, 1981 by TNL GN25-0840 OS/VS1 OS/VS2 VS1; OS/VS) OS/VS) p
page fault, pseudo, affected by VS1 handshaking processing 111
page tables, shadow table bypass
restrictions, for V=R users 34- 34. 1
page waits, VM/370 handling of, effect on
operating systems run under VM/370 11-12
page zero
in DOS Release 27, modifying to work in V=R virtual machine 74
shadow table bypass restrictions, for V=R users (2748-X]1) 34-34.1
using virtual=real option, to locate for
virtual machine operating systems 42 paging nonpaging mode)
activity, reducing for virtual machines
5
factors, affecting virtual machine
performance 5
virtual=real option
eliminating double paging 41-42 eliminating double paging 42-42.1 partition sizes, specifying for DOSjVS virtual machine 71-72 virtual machine; VM/370) 1SIM, usinq under VM/370 41
performance
for BTAM autopoll channel programs
executed under VM/370 8
guidelines
for operating systems run under VM/370 33-37
for operating systems run under VM/370 {5748-X]1} 34.5-37
interactive, emphasizing response time for 37 I/O waits, establishing processing priority 12
measurements, for both VM/370 and
virtual machines 37
multiple-access virtual machine,
considerations for 31
options
controlled by qeneral user 36
controlled by system operator for
system analyst 36
reducing page waits for operating
systems under VM/370 11-12
usinq for both VM/370 and virtual
machines 36
virtual machine, paging factors
affect ing EJ physical pack sharing, definition of 17
PID tape, restoring, for DOS/VS system
gen er ation under VM/370 73 generating for DOS/VS and DOS/VSE virtual machines 72 POWER/VS POWER) preparation, OS/VS, system generation under VM/370 116-117
printing dumps, for virtual storage
operating systems under VM/370 5
priority
establishing for operating systems under V l'I/37 0 for I/O waits 12
for page waits 11-12
priority option, performance option,
specifying for virtual machines 36
privileged instructions
reducing
effect on virtual machine performance
34
effect on virtual machine performance 34.5-34.6 for DOS/VS virtual machine 71
processor
dedicating to MVS V=R virtual machine (5748::.X]1) 138-138.2
model dependencies, effect on channel
error recovery procedures 13-14
reserve/release support, limitation
issuing reserve CCW commands to shared
minidisks 21
single real, reserve/release support for
22 VM/370 reserve/release support for,
reserving devices between 21
processor time, for DOS/VS virtual machine,
accounting for 73-74 PROFILE EXEC AUTOLOG facility, specifying for
(example) 48 AUTOLOG1 virtual machine, defining for AUTOLOG facility 47 pseudo timers, defining, by using SPECIAL control statement 45
R RCTLUNIT macro, VM/370 reserve/release
support, reserving devices between
processors 21 RDEVICE macro
defining hardware features for VM/370 alternate path support 20 defining real CTCA to ASP virtual
machine 33 VM/370 reserve/release support,
reserving devices between processors
21
REAL TIMER option
considerations for operating systems run
under VM/370 7
directory entry example: for VM/370 virtual machine 49 virtual timers, permitting operating
systems to update under VM/370 41 reduc ing
paging activity, for virtual machines 5
privileged instructions
effect on virtual machine performance
34
effect on virtual machine performance 34.5-34.6
for DOS/VS virtual machine 71
Index 145