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From: | Kai Torben Ohlhus |
Subject: | [Octave-bug-tracker] [bug #55205] Speedup conv function by factor 7-8 by using conv2 instead of filter interally |
Date: | Tue, 11 Dec 2018 11:17:59 -0500 (EST) |
User-agent: | Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.80 Safari/537.36 |
URL: <https://savannah.gnu.org/bugs/?55205> Summary: Speedup conv function by factor 7-8 by using conv2 instead of filter interally Project: GNU Octave Submitted by: siko1056 Submitted on: Tue 11 Dec 2018 05:17:58 PM CET Category: Interpreter Severity: 1 - Wish Priority: 5 - Normal Item Group: Performance Status: In Progress Assigned to: siko1056 Originator Name: Originator Email: Open/Closed: Open Discussion Lock: Any Release: dev Operating System: Any _______________________________________________________ Details: A colleague of mine pointed me to the fact, that Octave's conv function can be speeded up by factor 7-8 by switching to the conv2 function internally. Since 1994 Octave uses filter to compute the convolution. Even filter2 uses conv2 internally ;-) If you want to test the speedup, look at the attached example. _______________________________________________________ File Attachments: ------------------------------------------------------- Date: Tue 11 Dec 2018 05:17:58 PM CET Name: conv_speedup_test.zip Size: 1KiB By: siko1056 <http://savannah.gnu.org/bugs/download.php?file_id=45631> _______________________________________________________ Reply to this item at: <https://savannah.gnu.org/bugs/?55205> _______________________________________________ Message sent via Savannah https://savannah.gnu.org/
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