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  1. LSST Verification and Validation
  2. LVV-18233

DMS-REQ-0390-V-01: Re-Runs on Other Systems_1

    Details

    • Type: Verification
    • Status: Not Covered
    • Priority: Undefined
    • Resolution: Unresolved
    • Component/s: DM
    • Labels:
    • Requirement ID:
      DMS-REQ-0390
    • Requirement Text:

      Specification: A re-run based on provenance, if run on a different system (but whose configuration still meets established LSST requirements), shall produce results which are the same to the extent computationally feasible (with the exception of provenance data or other execution records that depend on the wall-clock time or on variable system loads).

    • Requirement Discussion:

      Discussion: "To the extent computationally feasible" refers primarily to the possibility that different implementations of the IEEE floating-point standards may produce different results in the least significant figures, and that under some circumstances these variations can be amplified by algorithms and by choices made by optimizing compilers.  It is expected that normal "best practices" for writing floating point code will be followed to minimize the effects of these hardware differences, but they cannot be avoided altogether.

    • Higher Level Requirement:

      [OSS-REQ-0122: 03 Provenance, OSS-REQ-0169: 03 Data Products, OSS-REQ-0123: 01 Reproducibility, OSS-REQ-0172: 06 Provenance Archiving]

    • Verification Method:
      Undefined
    • Success Criteria:
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    • Percentage of Test Passing:
      0.0%
    • Sub-Component:
      Science

      Description

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            • Assignee:
              lguy Leanne Guy
              Reporter:
              syndeiapseuser Syndeia PSE User
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                Updated:
                Resolved:

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