bugGNU Octave - Bugs: bug #55389, Performance of movXXX functions

 
 

bug #55389: Performance of movXXX functions

Submitted by:  Rik <rik5>
Submitted on:  Fri 04 Jan 2019 06:30:41 PM UTC  
 
Category:  Performance Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Feature Request
Status:  Confirmed Assigned to:  None
Originator Name:  Open/Closed:  Open
Release:  dev Operating System:  Any

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Fri 04 Jan 2019 06:30:41 PM UTC, original submission:

The performance of certain of the movXXX functions for the most common case of "shrink" Endpoints can be improved by ~4X by using an equivalent formulation which pads the original data.

Below is an example with a 1000x1000 array x.

Code needs to be written that checks the input arguments to the movXXX function and if the "Endpoints" value is "shrink" or non-existent then it substitutes a specific fill value. The fill values are movmax (-Inf), movmin (Inf), movprod (1), and movsum (0).

Rik <rik5>
Project Administrator

 

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