[Simh] What is the best machine to run simh?

[Carl Lowenstein]

On Jan 25, 2008 12:01 AM, Zane H. Healy <healyzh at aracnet.com> wrote:
>
> Well just for fun...  I VESTed it.  Here is what
> I get from a Compaq XP1000 which has a 667Mhz
> 21264 CPU, 2GB RAM, and is running OpenVMS 8.3.
>
> Zane
>
> $ r PT_VAX_TV.EXE
> Emulated VAX CPU comparative performance test, version 1.0
> Copyright 2006 Software Resources International.
> This test is not suitable to measure overall system performance.
> No rights can be derived from the execution or the output of this test
> Adjusting test length for fixed and floating point to 10 seconds/unit
> Test started on Thu Jan 24 22:44:32 2008, for a COMPAQ Professional Workstation
> XP1000 CPU with VMS V8.3
>
> Sequential test results:
>
>                 MIPs       Dhrystones   VUPs
> Run 0          125.0       666666      1338.0
> Run 1          125.0       666666      1356.5
> Run 2          111.1       666666      1368.0
> Run 3          125.0       666666      1335.5
> ---------------------------------------------
> Average        121.5       666666      1349.5
>
> Interleaved test results:
>
>                 MIPs       Dhrystones   VUPs
> Run 0          111.1       666666      1354.5
> Run 1          125.0       666666      1364.0
> Run 2          125.0       666666      1366.0
> Run 3          125.0       666666      1346.5
> ---------------------------------------------
> Average        121.5       666666      1357.8
>
> Test ended on Thu Jan 24 23:03:00 2008, checksum 4AC23FB4

Don't you think maybe something is wrong in the test procedure when
every result in the Dhrystone column is 666666?  I would look for some
kind of significance underflow.  Like too short a run time to
accumulate enough timer ticks.

For that matter, every result in the MIPs column is either 1000/8 or 1000/9.

    carl
-- 
    carl lowenstein         marine physical lab     u.c. san diego
                                                 clowenstein at ucsd.edu