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  1. SystemML
  2. SYSTEMML-2147

Performance read of short and wide sparse matrices

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: SystemML 1.1
    • Component/s: None
    • Labels:
      None

      Description

      Since for sparse matrix reads of many columns we synchronize over the first row of a row of blocks, there is unnecessary contention with many read threads and a small number of rows (e.g., 10K rows -> 10 blocks, but 24 threads reading)

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            • Assignee:
              mboehm7 Matthias Boehm
              Reporter:
              mboehm7 Matthias Boehm
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              • Created:
                Updated:
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