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[Octave-bug-tracker] [bug #49940] The svd function takes very long time


From: Rik
Subject: [Octave-bug-tracker] [bug #49940] The svd function takes very long time for big matrices
Date: Fri, 25 Jan 2019 13:59:35 -0500 (EST)
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko

Update of bug #49940 (project octave):

                  Status:                   Fixed => Confirmed              
             Open/Closed:                  Closed => Open                   
              Depends on:                         => bugs #55564            

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Follow-up Comment #7:

Re-opening this bug report.  The 'gesdd' driver can occasionally produce
utterly incorrect values. so switching to this driver for performance
improvement is no longer a possibility.  See bug #55564 which is now linked to
this report.

Until bug #55564 is resolved upstream in LAPACK, it would be worthwhile to
benchmark/profile Octave to determine if there is anything on our side of the
API that can be improved with respect to performance.

    _______________________________________________________

Reply to this item at:

  <https://savannah.gnu.org/bugs/?49940>

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