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 Post subject: MUMPS on the Raspberry Pi
PostPosted: Fri Jun 29, 2012 5:14 am 
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Joined: Mon Nov 01, 2010 3:33 pm
Posts: 104
Location: Australia
Real Name: Ray Newman
Began Programming in MUMPS: 01 Jul 1976
I have finally received my Pi and have commenced porting MUMPS to it. There are some basic problems so it could take a while.

Nice little machine tho - a lot more resources than the room sized $6,000,000 machine I first worked on.

Ray


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 Post subject: Re: MUMPS on the Raspberry Pi
PostPosted: Wed Jul 04, 2012 2:35 am 
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Joined: Mon Nov 01, 2010 3:33 pm
Posts: 104
Location: Australia
Real Name: Ray Newman
Began Programming in MUMPS: 01 Jul 1976
I have uploaded to https://sourceforge.net/projects/mumps/files/? MUMPS for the
ARM based Raspberry Pi. This version still has major bugs (eg, multiply causes
a segment violation) but is put there for those hardy souls interested in
getting MUMPS onto the Pi. Download file mumps-1.57-linux-RaspberryPi and
rename as mumps. Your database can be copied from an x86 machine or created on
the ARM.

Have fun...

Ray Newman


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 Post subject: Re: MUMPS on the Raspberry Pi
PostPosted: Fri Jul 06, 2012 11:09 pm 
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Joined: Mon Nov 01, 2010 3:33 pm
Posts: 104
Location: Australia
Real Name: Ray Newman
Began Programming in MUMPS: 01 Jul 1976
The fully functioning version is now available at:
https://sourceforge.net/projects/mumps/files/?
Download mumps-linux-RasPi and rename to mumps (the executable).

Ray


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 Post subject: Re: MUMPS on the Raspberry Pi
PostPosted: Mon Jul 09, 2012 3:57 pm 
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Joined: Mon Nov 01, 2010 3:33 pm
Posts: 104
Location: Australia
Real Name: Ray Newman
Began Programming in MUMPS: 01 Jul 1976
When I first wrote my long running application 'ONE' in April 1981, it was
using DSM-11 on a PDP 11/23 (10 KHz) with 248 KB of RAM and 20 MB of disk
that cost us in the vicinity of $40,000. Now I am running ONE under MUMPS V1 on
a Raspberry Pi (700 MHz) with 256 MB of RAM and 8 GB of disk (SSD) that cost me
$40.

To compare these two environments, we start with the raw processor speed where
the Pi is 70,000 times faster; factor the 11/23 being CISC and the ARM being
RISC and assume 10,000 times faster. Benchmarks have shown MUMPS V1 is about
10 times slower that DSM-11, VAX-DSM etc - it is, after all, written in poor c;
where the DSMs were assembly. We now assume that the application under MUMPS V1 on the Pi is about 1000 times the speed of the same application on the 11/23.
On the 11/23, we could run up to 20 terminals (interactive jobs). We could,
perhaps, run 20,000 jobs on the Pi but I think not given the RAM and disk
limitations. Over the years (30 of them), ONE has also become a little more
cumbersome. Also, MUMPS V1 is much less frugal with rescorces than DSM; so
I estimate we could run (slowly) the best part of 200 jobs on the Pi as long as
we were not trying to also use a graphics head on it.

Not bad value when stated that way.

Ray


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