Final Agenda For The Workshop On Mixed Language Programming 
		Organized By The DOE Language Working Group

			Program Committee

			 Brian T. Smith 
			 Paul C. Messina
	   Mathematics and Computer Science Division
		  Argonne National Laboratory

			  Brian Ford
		Numerical Algorithms Group Ltd.

		     Executive House Hotel
		       Chicago, Illinois
		     April 30 - May 2, 1985

TUESDAY MORNING, April 30, 1985, Illinois Room

8:30 AM Registration 

8:45 AM Welcome and Introductory Comments -- Purpose of the Workshop

Session 1: The Need for Mixed Language Programming 
Chairman: B. Ford, NAG Ltd.

9:00 AM Presentation 1 -- Interface Issues In Software	Parts 
Technology, J. Rice, Purdue University

9:40 AM Presentation 2 -- The Structure Of Mixed Language Program 
Realizations, B. Einarsson, University of Linkoping

10:50 AM Presentation 3 -- Necessary Conditions For Mixed Language 
Programming, C. van der Laan, University of Groningen

11:30 AM General Discussion of the Papers of Session 1 

TUESDAY AFTERNOON, April 30, 1985, Illinois Room

Session 2: Existing Mixed Language Programming Environments

Chairman: G. Blair, Lawrence Livermore National Laboratory 

1:30 PM Presentation 1 -- Architecture of the VAX/VMS Common 
Language Environment, R. Grove, Digital Equipment 
Corporation

2:10 PM Presentation 2 -- The Universal Compiling System, P. Bergh, 
Sperry-Univac Corp.

2:50 PM Presentation 3 -- IBM's Approach to Interlanguage 
Communication between PL/1 and Other Languages, K. Dritz, 
Argonne National Laboratory

4:00 PM General Discussion for Tuesday's Presentations	- Proposed
Discussion Topics

1) How do the definitions of programming languages aid and 
   abet mixed language programming?
2) Do mixed language programming ideas extend to language-
   sensitive editors, or program debuggers? Do such 
   extensions impose new requirements on the definitions of 
   programming languages?
3) Must operating systems be standardized before mixed 
   language programming environments become readily 
   available?
4) Are interface specifications an intermediate solution to 
   informing the compiler that foreign programs are being 
   invoked? Is a more general solution a technique for 
   informing the compiler how to represent the data types?
5) Can the concept of a generalized dope vector be defined 
   to specify the communication of common primitive data 
   types between languages.

WEDNESDAY MORNING, May 1, 1985, Illinois Room 

8:45 AM Summary of Previous Day's Discussions

Session 3: The Pros and Cons of Mixed Language Programming 
Chairman: P. Messina, Argonne National Laboratory 

9:00 AM Presentation 1 -- Software Fault-Tolerance Through Mixed 
Language Programming, M. Vouk, North Carolina State 
University

9:40 AM Presentation 2 -- Are Mixed Language Programming 
Environments A Viable Solution to Avoiding Multiple 
Libraries?, B. Ford, Numerical Algorithms Group Ltd.

10:50 AM Presentation 3 -- Implementation Issues In Providing a Mixed 
Language Programming Environments, M. Gentleman, National 
Research Council

WEDNESDAY AFTERNOON, May 1, 1985, Illinois Room

Session 4: Experience with Mixed Language Programming 
Chairman: W. J. Cody, Argonne National Laboratory 

1:30 PM Presentation 1 -- How to Define Programming Languages To 
Make Mixed Language Programming Possible, I. Pyle, 
University of York

2:10 PM Presentation 2 -- Mixed Language Programming For SISAL and 
Fortran on Crays, S. Skedzielewski, Lawrence Livermore 
National Laboratory

2:50 PM Presentation 3 -- Knowledge-Based Support for Accessing 
Existing Programs, J. Tompkins, Amoco Research

4:00 PM General Discussion for Wednesday's Presentations -- Proposed 
Discussion Topics

1) Desiderata for future implementations of a mixed language 
   programming environment
2) Can the interfaces to foreign programs be efficient 
   enough to eliminate pressure to develop language specific 
   program libraries?

THURSDAY MORNING, May 2, 1985, Illinois Room

9:00 AM Summary of Previous Day's Discussions

Session 5: Standardization -- Is It Possible?
Chairman: Jim Pool, NAG Inc.

9:15 AM Presentation 1 - Programming Language Interface to DataBase 
Management Systems, L. Gallagher, NBS

9:55 AM Presentation 2 - What Have We Learned and What Is Next?	B. 
Smith, Argonne National Laboratory

11:00 AM Discussion Topics --
1) Is mixed language programming a temporary solution while 
   we wait for the truly all-purpose language?
2) Are the needs and requirements for mixed language 
   programming in scientific computation different than for 
   database manipulation or artificial intelligence?

12:00 Noon Summary and Closing Remarks