Dr. Richard ("Dick")Walters, Professor of UC Davis, who happened to be in
Frankfurt/Germany when the official end of Micronetics was made public,
was interviewed by "M-Boerse",
the journal of the MUG Germany, immediately after InterSystems had
announced their takeover of Micronetics on Friday, June 19th 1998.
"M-Boerse" was represented by Dr. Kirsten, now chairman of MUG
Germany, and Wilhelm Pastoors, one of its coeditors.
M-boerse: projects like Linux, FreeBSD, PERL, gcc - to name just a few - demonstrate that there is a second way to achieve really efficient computer systems. When will the IT-World see "freeMumps"?
At this point, given the announcement we heard an hour ago, I can't give
you a direct answer. I can speculate, though: there are two directions that the
M-community might go.
One is to say we have only one commercial vendor, that commercial vendor
does not support the MDC and the statement that they published about the
Micronetics doesn't even mention the MDC.
So, there are two things that might happen: one is that MDC will die; the other is that the M community will say we can't let that happen, since M cannot evolve with the name Cache' replacing M and becoming a commercial product, not an ISO standard.
There are many computer scientists who have worked with the M language who feel that it is a major contribution and would like to stay a part of that evolutionary process. If the M Community decides to try to preserve the M standard, there are again, two options.
The first is to support the remaining or help develop potentially new commercial versions; the second is to support a public domain effort that might lead to several versions of M and its global handler. These two options are not mutually exclusive; in fact, they could easily be addressed in parallel.
Let's consider the second option first.
GUM has not yet achieved its goal of implementing a compiler, but the
handler has gone through some improvements, a process that is
I don't know the history of the PERL language but it would be an
interesting one to explore because PERL came out of nowhere. Five years ago
was no PERL. Now there is PERL on almost every machine. There is even a
group meeting scheduled this Fall. How did that happen, what could we
the M community that might make us want to try to apply this model in
evolution of M?
M-boerse: You stated that the global handler is too slow.
DW: No, what I said was that earlier M implementations at UC Davis were too slow to serve as starting points for a new M compiler. We had several versions of MicroMUMPS running on a good many different machines, but their performance was much slower than existing M implementations of their time, and the code was written using a technique that was cumbersome. Another implementation of M by a student at UC Davis generated P code which was then interpreted. This version also proved to be orders of magnitude too slow to serve as a base for the present effort. Actually, the GUM global handler is quite fast, certainly fast enough for a public domain version.
M-boerse: What is a global handler?
In M, the term "global" refers to what in other languages is referred to
persistent data. Global variables are stored after a program that
halts, and they can be shared by multiple users. (M "local variables"
equivalent of global variables in other languages, in that they are
all procedures running in a workspace.)
The GUM global handler creates a B-Tree structure of the hierarchical M
storing them using the same "canonic" sorting, based on numerics, then
code values to sort string subscripts. This structure outperforms
model joins, as has been shown in many studies.
When I say that we have a global handler I say that we have a database that is fully functional but I don't have the MUMPS commands, operators, and other features that are part of the language.
M-boerse: A part of the Linux project was that a lot of universities directed their students to make certain parts of the system. So from different universities came different parts that contributed to the whole project. Now, the Frankfurt university hospital supports Mumps, to give some names: Prof. Giere, Dr. Kirsten - could you imagine that there will be a concerted action by - for example - the department of informatics at the Frankfurt University and UC Davis and other universities ... to get some more support for the realisation of the idea of a free mumps?
I am not sure - I think that today's announcement will act as catalyst
actions of this type, but probably involving a much broader segment of
One of things what Linux has in its favor is that Linux is Unix based.
taught in computer science departments around the world. Historically,
Bell Telephone first developed Unix, they sold it for 20.000 $ to
as an operating system . They sold a license to the entire University
California for $150 for unlimited licenses. In other words: they gave it
the educational world saying "it is yours, you can go develop it, you
with it however you want, here is the source code, have fun!" BSD
outgrowth of that effort. As a result, UNIX became the principal
system taught and used in computer science departments around the world,
with time it gained a larger share of the commercial marketplace as
M-boerse: So, we have to see that the computer scientist base for developing an M Database is much smaller than it was for Linux. We have to go by personal contacts. The situation is that Frankfurt supports Mumps very strong and there may be a chance to make personal contacts to the department of informatics to show what's going and maybe there is one professor who says: "ok, I will go to support it, I will direct my students to that project." We have to build a net of people.
DW: ... Yes, I think that the Goethe University has a very good potential to serve as such a center. I hope we can interest others in this effort as well. The GUM project started as a distributed effort, and even if I retire in a couple of years, it should be able to continue without me.
M-boerse: But you are the person identified with the GUM
DW: The University of California is because of me. Not because I did it but because I got people to get started on it. It has a life of its own. I also think that M is important and I don't want to see it die. I'm willing to put an administrative effort into it, and it is a working model at present. But I cannot contribute to the actual compiler development. That would require help from groups and institutions such as Goethe University and the growing members of the GUM team.
M-boerse: At the moment situation is that there are only a few active members of the group. If we could find a few more to join, it would significantly improve the situation, right?
DW: All of these people have their other jobs, I don't think they have had time during the past two years to work on the compiler. It takes an extra effort , an extra incentive to say: "right, instead of going home and playing with my children I'm going to stay for an extra 5 hours and work on the compiler". That's something that may happen, we may get people, especially after today's announcement.
M-boerse: Just to get an imagination: how much work has to
DW: I truly don't know. Not a large percentage of the total group in any one company. I have heard that Micronetics had two lead developers and about 18 others working on various versions. DSM, so I understand, had about seven working on the system, and DTM perhaps a few less.
I think we might be able to get enough people to develop one or more public domain compilers. With the incentive we now have, many people are saying: we can't let this happen, we can't let Mumps die, I think we can have a version that was operational for the MDC to start to work with in less than a year. And that assumes that we have a leader who knows something about it, and who can assign to other people different parts of the parsing, the lexical analysis and so on, I think that could be done. It looks as though we do have such a leader willing to head the team (LD Landis), so we are off to a good start.
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