Design notes for the next generation persistent object manager for CAP

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Description

The CAP query system software at Fermilab has several major components, including SQS (for managing the query), the retrieval system (for fetching auxiliary data), and the query software itself. The central query software in particular is essentially a modified version of the `ptool` product created at UIC (University of Illinois at Chicago) as part of the PASS project under Bob Grossman. The original UIC version was designed for use in a single-user non-distributed Unix environment. The Fermi modifications were an attempt to permit multi-user access to a data set distributed over a set of storage nodes. (The hardware is an ... continued below

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45 p.

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Isely, M.; Fischler, M. & Galli, M. May 1, 1995.

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Description

The CAP query system software at Fermilab has several major components, including SQS (for managing the query), the retrieval system (for fetching auxiliary data), and the query software itself. The central query software in particular is essentially a modified version of the `ptool` product created at UIC (University of Illinois at Chicago) as part of the PASS project under Bob Grossman. The original UIC version was designed for use in a single-user non-distributed Unix environment. The Fermi modifications were an attempt to permit multi-user access to a data set distributed over a set of storage nodes. (The hardware is an IBM SP-x system - a cluster of AIX POWER2 nodes with an IBM-proprietary high speed switch interconnect). Since the implementation work of the Fermi-ized ptool, the CAP members have learned quite a bit about the nature of queries and where the current performance bottlenecks exist. This has lead them to design a persistent object manager that will overcome these problems. For backwards compatibility with ptool, the ptool persistent object API will largely be retained, but the implementation will be entirely different.

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45 p.

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INIS; OSTI as DE95014550

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  • Other Information: PBD: May 1995

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  • Other: DE95014550
  • Report No.: FNAL--TM-1934
  • Grant Number: AC02-76CH03000
  • DOI: 10.2172/88578 | External Link
  • Office of Scientific & Technical Information Report Number: 88578
  • Archival Resource Key: ark:/67531/metadc794840

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  • May 1, 1995

Added to The UNT Digital Library

  • Dec. 19, 2015, 7:14 p.m.

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  • April 1, 2016, 6:20 p.m.

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Isely, M.; Fischler, M. & Galli, M. Design notes for the next generation persistent object manager for CAP, report, May 1, 1995; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc794840/: accessed June 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.