NDLI: Migration of legacy WSR-8D algorithms and product generators to the open system RPG

Content Provider	IEEE Xplore Digital Library
Author	Zhongqi Jing Smith, S. Jain, M. Zalrai, A.
Copyright Year	1997
Description	Author affiliation: Coop. Inst. for Mesoscale Meteorol. Studies, Oklahoma Univ., Norman, OK, USA (Zhongqi Jing)
Abstract	A substantial part of the current Weather Surveillance Radar-1988 Doppler (WSR-88D) Radar Product Generation (RPG) software consists of the product generation and meteorological algorithms, which were implemented through about 50 tasks. These tasks, written in FORTRAN with CONCURRENT extensions and running under the CONCURRENT 05/32 operating system (OS), can not be directly compiled and run under a UNIX OS. Intertask communication is implemented through using shared memory segments, requiring all tasks to be running on the same computer hardware. Tasks must fit into a predefined data flow network and are controlled by a central control module. This makes the system sensitive to task failure and difficult to be. Dynamically reconfigured (redistributing the tasks among hosts, adding new tasks and so on). These tasks contain sophisticated algorithms and lengthy code. The authors decided to take a direct porting approach to migrate these tasks to the Open System RPG (ORPG). The porting approach is unique in that only a single version of the source code is maintained. The ported version uses the original RPG code without any change for all subroutines except the main subroutine, which is replaced by a new version. A preprocessor is developed to convert the CONCURRENT FORTRAN code to a standard FORTRAN code, that can be compiled on a UNIX machine. This converted version is used only temporarily at compile time. A set of supporting functions, emulating the current RPG API, is developed to provide data flow and processing control support. All inter-process data exchanges are implemented through message passing in the supporting functions. "Wrapped" by the new supporting functions, the tasks turn into independent, data driven and dynamically relocatable components that can be used in a distributed environment.
Starting Page	318
Ending Page	324
File Size	636305
Page Count	7
File Format	PDF
ISBN	0780337255
DOI	10.1109/NAECON.1997.618097
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-07-14
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Operating systems Centralized control Communication system control Surveillance Doppler radar Meteorological radar Meteorology Software algorithms Concurrent computing Hardware
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in