VAX MP


    $ SHOW CPU

MYVAX, a VAXserver 3900 Series
Multiprocessing is ENABLED. Full checking synchronization image loaded.

PRIMARY CPU = 00
Active CPUs:      00 01 02 03 04 05 06 07
Configured CPUs:  00 01 02 03 04 05 06 07

                            OpenVMS Monitor Utility
            +-----+         TIME IN PROCESSOR MODES 
            | CUR |              on node MYVAX
            +-----+         10-NOV-2012 10:59:32.31

Combined for  8 CPUs                 0         200       400       600      800
                                     + - - - - + - - - - + - - - - + - - - - -+
 Interrupt Stack                  88 |▒▒▒▒
                                     |         |         |         |          |
 MP Synchronization               38 |▒
                                     |         |         |         |          |
 Kernel Mode                     130 |▒▒▒▒▒▒
                                     |         |         |         |          |
 Executive Mode                      |
                                     |         |         |         |          |
 Supervisor Mode                     |
                                     |         |         |         |          |
 User Mode                       536 |▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒
                                     |         |         |         |          |
 Compatibility Mode                  |
                                     |         |         |         |          |
 Idle Time                         9 |
                                     + - - - - + - - - - + - - - - + - - - - -+

 Extended Indx Process name    Username    State   Pri   PCB      PHD    Wkset
-- PID -- ---- --------------- ----------- ------- --- -------- -------- ------
 00000201 0001 SWAPPER                      HIB     16 8E95EDA0 8E95EC00      0
 00000205 0005 CONFIGURE       SYSTEM       HIB      8 8F6C8780 90430000    197
 00000206 0006 LANACP          SYSTEM       HIB     13 8F6C89C0 905F2800    696
 00000208 0008 IPCACP          SYSTEM       HIB     10 8F6C92C0 906D3C00    197
 00000209 0009 ERRFMT          SYSTEM       HIB      9 8F6C8C00 907B5000    233
 0000020B 000B OPCOM           SYSTEM       HIB      9 8F6C9500 90896400    282
 0000020C 000C AUDIT_SERVER    AUDIT$SERVER HIB      9 8F6832C0 90977800    749
 0000020D 000D JOB_CONTROL     SYSTEM       HIB     10 8F6C8300 90A58C00    423
 0000020E 000E QUEUE_MANAGER   SYSTEM       HIB      9 8F6C8540 90B3A000   1046
 0000020F 000F SECURITY_SERVER SYSTEM       HIB     10 8F6C9080 90C1B400   1283
 00000210 0010 TP_SERVER       SYSTEM       HIB      9 8F74E9C0 90CFC800    337
 00000211 0011 LATACP          SYSTEM       HIB     14 8F752480 90DDDC00    273
 00000212 0012 TCPIP$INETACP   INTERnet     HIB      9 8F763E00 90EBF000    232
 00000213 0013 TCPIP$FTP_1     TCPIP$FTP    LEF     10 8F7D95C0 90FA0400    842
 00000214 0014 SYSTEM          SYSTEM       CUR 01  16 8F6C80C0 90511400    542
 00000215 0015 STRESS          STRESS       LEF     11 8F6CBEC0 91081800    391
 00000216 0016 CPU_HOG_1       STRESS       CUR 07   2 8F6CE4C0 91162C00    351
 00000217 0017 CPU_HOG_2       STRESS       CUR 02   2 8F6CE940 91244000    351
 00000218 0018 CPU_HOG_3       STRESS       CUR 03   2 8F6CF480 91325400    351
 00000219 0019 CPU_HOG_4       STRESS       CUR 04   2 8F6CFB00 91406800    351
 0000021A 001A CPU_HOG_5       STRESS       CUR 05   2 8F6D0000 914E7C00    351
 0000021B 001B CPU_HOG_6       STRESS       CUR 00   2 8F6D2880 915C9000    351
 0000021C 001C CPU_HOG_7       STRESS       CUR 06   2 8F6D2B80 916AA400    351

8E330000   CPU$L_CURPCB                    8F7D9340	
           CPU$T_CPUDEF_PAGE0              
8E330004   CPU$L_REALSTACK                 0E300A00	 
8E330008   CPU$W_SIZE                          0364	 
8E33000A   CPU$B_TYPE                        6A	 
8E33000B   CPU$B_SUBTYPE                   02	 
8E33000C   CPU$B_BUSYWAIT                        00	 
8E33000D   CPU$B_STATE                         02	 
8E33000E   CPU$B_CPUMTX                      01	 
8E33000F   CPU$B_CUR_PRI                   19	 
8E330010   CPU$L_INTSTK                    8E332E00	
8E330014   CPU$L_WORK_REQ                  00002002	 
8E330018   CPU$L_PERCPUVA                  8E330000	
8E33001C   CPU$L_SAVED_AP                  00000003	 
8E330020   CPU$L_HALTPC                    00000000	 
8E330024   CPU$L_HALTPSL                   00000000	 
8E330028   CPU$L_SAVED_ISP                 7FFE7738	CTL$GL_KSTKBAS+00538
8E33002C   CPU$L_PCBB                      0ED05E20	 
8E330030   CPU$L_SCBB                      0FBF0600	 
8E330034   CPU$L_SISR                      00000000	 
8E330038   CPU$L_P0BR                      90542800	
8E33003C   CPU$L_P0LR                      00000004	 
8E330040   CPU$L_P1BR                      8FDF2800	
8E330044   CPU$L_P1LR                      001FF53E	 
8E330048   CPU$L_BUGCODE                   00000474

VAX MP is a derivative variant of popular SIMH VAX simulator able to execute OpenVMS (VAX/VMS) in true SMP mode on multiprocessor host machines, including modern commodity multicore/hyperthreaded PCs and Macs.

The initial release of VAX MP supports Intel x86 and x64 processors based machines as a host hardware platform with Windows, Linux or OS X as a host operating systems. The number of VAX MP virtual processors is limited to the number of host machine’s simultaneous execution units (logical CPUs). For example, a PC with quad-core i7 processor has hyperthreaded cores and would allow to run VAX MP instance with up to 8 virtual processors. VAX MP had been tested to OpenVMS VAX theoretical limit of 32 processors.

VAX MP is an architectural simulator. The focus is on OpenVMS SMP capability, rather than a simulation of specific historical hardware. Therefore VAX MP does not attempt to simulate any historically existing VAX multiprocessor model (although it may be used as a stepping stone towards further development of such a simulator). Instead VAX MP simulates a multiprocessor variant of MicroVAX 3900, a machine that never historically existed, but complies generic VAX architecture and runs OpenVMS in SMP mode.

The followng screenshots demonstrate running OpenVMS in multiprocessor mode on VAX MP:

VAX MP typical session with 6 processors

VAX MP running OpenVMS in 32-processor configuration

VT320 connected via DECserver 200 to a VAXcluster of two VAX MP nodes, each with 8 processors, under heavy cluster IO traffic

Documentation:

“VAX MP OpenVMS User Manual” is intended for end user.

“VAX MP Technical Overview” is intended for simulator developers and those interested in VAX MP internal design and architecture.

Prebuilt binaries:

Windows 32-bit (also runs on 64-bit Windows)
Windows 64-bit
Linux 32-bit (linked to PCAP shared library and requires PCAP package installed for networking)
Linux 32-bit (will dynamically load PCAP for networking if available, otherwise run with network disabled)
Linux 64-bit (linked to PCAP shared library and requires PCAP package installed for networking)
Linux 64-bit (will dynamically load PCAP for networking if available, otherwise run with network disabled)
OS X 64-bit

VSMP tool distribution:

as VMS BACKUP virtual tape image

as RD54 disk image

Source code: git downloadable.

Important legal notice:

On a purely technical level VAX MP does not require VMS SMP extension license to run. OpenVMS runs fully functional in SMP mode on VAX MP without prompting for SMP extension license.

However from the legal standpoint running VMS in SMP mode may require having a license for VMS SMP extension. Please be sure to consult “Legal information notice B” in “VAX MP OpenVMS User Manual” for more information regarding the licensing situation.