An Interface between Object-Oriented Systems.

reportActive / Technical Report | Accession Number: ADA189245 | Open PDF

Abstract:

The Chrysalis operating system for the Butterfly Parallel Processor presents an object-oriented programming environment based on shared memory. However, because of Chrysaliss low level orientation and its use of type-unsafe features of the C programming language, programs using the environment are difficult to program and highly error-prone. Using C as the primary programming language for the Butterfly does not fully realize the benefit of Chrysaliss object orientation. An object-oriented programming language is natural candidate for improving the Chrysalis environment. The C programming language provides a number of advantages in developing such an interface. This paper reports the successes and problems encountered in the development of Chrysalis , a C interface to Chrysalis uncovered many strengths and weakness in C . Some apply to C in general, others apply only to its adaptation to a parallel programming environment. It is important to note that C is a sequential language it is use in a parallel programming environment is therefore outside the bounds of its design.

Author(s):
Crowl, Lawrence A.
Author Organization(s):
ROCHESTER UNIV NY DEPT OF COMPUTER SCIENCE
Descriptive Note:
Technical rept.,
Pagination:
0023

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-211
Contract/Grant Number(s):
DACA76-85-C-0001, $NSF-DCR83-20136
 Subject Terms
Joint Capability Areas:
JCA_4.7.2_Installation Services; JCA_4.7_Base and Installations Support; JCA_1_Force Support; JCA_1.3_Human Capital Management; JCA_1.3.1_Personnel and Family Support; JCA_1.2_Force Preparation; JCA_1.2.6_Concepts; JCA_6.1.3_Switching and Routing; JCA_6_Net Centric; JCA_1.2.3_Educating; JCA_5_Command and Control; JCA_6.1_Information Transport; JCA_6.2.1_Information Sharing; JCA_6.2.2_Computing Services; JCA_5.3_Planning
Modernization Areas:
Quantum Science and Computing
Communities of Interest:
Materials and Manufacturing Processes
Descriptor(s):
*PARALLEL PROCESSING, *PROGRAMMING LANGUAGES, *PARALLEL PROCESSORS, COMPUTER PROGRAMMING, INTERFACES, LOW LEVEL, MEMORY DEVICES, SEQUENCES, TIME SHARING
Field(s)/Group(s):
Computer Programming and Software, Computer Hardware
Keyword(s):
*Chrysalis operating system, BBN Butterfly parallel processor, C programming language
Report Date:
1987 Apr 01