भारतीय प्रौद्योगिकी संस्थान दिल्ली
Indian Institute of Technology, Delhi
  • Login
View Item 
  •   Home
  • Faculty Research Publications
  • Atmospheric Sciences [CAS]
  • View Item
  •   Home
  • Faculty Research Publications
  • Atmospheric Sciences [CAS]
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Climate modeling using parallel processors

Thumbnail
View/Open
dashcli94.pdf


Collections
  • Atmospheric Sciences [CAS] [37]
Metadata
Show full item record
Author: Dash, S K; Selvakumar, S; Jha, B

Advisor: Advisor

Date: 1995

Publisher:
Citation: Atmospheri

Series/Report no.:
Item Type: Article

Keywords: Triangular truncation scheme; Fourier transforms; single program multiple data architecture; wallclock time; speedup and efficiency

Abstract: A spectral General Circulation Model at horizontal resolutmns T21 and T42 has been integ- rated upto 30 d on 16 and 32 processors of Meiko T800. The model at resoluuon T21 is also implemented on 16 processors (T800) of a parallel computer (CHIPPS) built m India. The wallclock timings of model mtegration for 1, 10 and 30 d are noted and the speedup and efficiency of 16 and 32 processors have been computed. Results show that a T42 parallel model with nine levels in the vertical takes less than 36 elapsed minutes on 32 processors for 1 d mtegration. In case ofT21 model integration, the maximum speedup and efficiency achieved on 16 processors are about 10 and 63%, respectively. When the horizontal resolution of the model is doubled to T42, the maximum speedup and efficiency obtained on 32 processors are about 9 and 29%, respectively. It is also found that when the physical parametrisatmn schemes are mcluded In the model and thereby the number of arithmetic operations are increased, the speedup and efficiency of 16 as well as 32 processors increase compared to the case voth no physics m the model.
Contact Us
Shankar B. Chavan
Computer Applications Division
Central Library, IIT Delhi
shankar.chavan@library.iitd.ac.in
NDLTD
Shodhganga
NDL
ePrints@IISc
etd@IISc
IR@IIT Bombay
NewsClips @IITD
  • Facebook
  • twitter
  • youtube
  • instagram
  • pinterest
  • Linkedin

Browse

All of IITDCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

LoginRegister
Contact Us
Shankar B. Chavan
Computer Applications Division
Central Library, IIT Delhi
shankar.chavan@library.iitd.ac.in
NDLTD
Shodhganga
NDL
ePrints@IISc
etd@IISc
IR@IIT Bombay
NewsClips @IITD
  • Facebook
  • twitter
  • youtube
  • instagram
  • pinterest
  • Linkedin