Application performation evaluation of the HTMT architecture.

PDF Version Also Available for Download.

Description

In this report we summarize findings from a study of the predicted performance of a suite of application codes taken from the research environment and analyzed against a modeling framework for the HTMT architecture. We find that the inward bandwidth of the data vortex may be a limiting factor for some applications. We also find that available memory in the cryogenic layer is a constraining factor in the partitioning of applications into parcels. The architecture in several examples may be inadequately exploited; in particular, applications typically did not capitalize well on the available computational power or data organizational capability in ... continued below

Physical Description

39 pages

Creation Information

Hereld, M.; Judson, I. R. & Stevens, R. February 23, 2004.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

In this report we summarize findings from a study of the predicted performance of a suite of application codes taken from the research environment and analyzed against a modeling framework for the HTMT architecture. We find that the inward bandwidth of the data vortex may be a limiting factor for some applications. We also find that available memory in the cryogenic layer is a constraining factor in the partitioning of applications into parcels. The architecture in several examples may be inadequately exploited; in particular, applications typically did not capitalize well on the available computational power or data organizational capability in the PIM layers. The application suite provided significant examples of wide excursions from the accepted (if simplified) program execution model--in particular, by required complex in-SPELL synchronization between parcels. The availability of the HTMT-C emulation environment did not contribute significantly to the ability to analyze applications, because of the large gap between the available hardware descriptions and parameters in the modeling framework and the types of data that could be collected via HTMT-C emulation runs. Detailed analysis of application performance, and indeed further credible development of the HTMT-inspired program execution model and system architecture, requires development of much better tools. Chief among them are cycle-accurate simulation tools for computational, network, and memory components. Additionally, there is a critical need for a whole system simulation tool to allow detailed programming exercises and performance tests to be developed. We address three issues in this report: (1) The landscape for applications of petaflops computing; (2) The performance of applications on the HTMT architecture; and (3) The effectiveness of HTMT-C as a tool for studying and developing the HTMT architecture. We set the scene with observations about the course of application development as petaflops computing becomes possible to contemplate. We then address the topic of application performance analysis on this architecture, including our analysis framework and the concepts leading up to its adoption, summary analyses of four computationally distinct test applications, and directions in performance analysis for complex hybrid architectures such as the HTMT. We briefly discuss the strengths and weaknesses of HTMT-C, and we then conclude with comments on future performance analyses.

Physical Description

39 pages

Source

  • Other Information: PBD: 23 Feb 2004

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Report No.: ANL/MCS-TM-258
  • Grant Number: W-31-109-ENG-38
  • DOI: 10.2172/822571 | External Link
  • Office of Scientific & Technical Information Report Number: 822571
  • Archival Resource Key: ark:/67531/metadc782475

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • February 23, 2004

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

Description Last Updated

  • March 11, 2016, 12:43 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 4

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Hereld, M.; Judson, I. R. & Stevens, R. Application performation evaluation of the HTMT architecture., report, February 23, 2004; Illinois. (digital.library.unt.edu/ark:/67531/metadc782475/: accessed June 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.