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Re: [Octave 5.2.0 @ Ubuntu 20.04] Long duration of complex matrix invers

From: Thomas D. Dean
Subject: Re: [Octave 5.2.0 @ Ubuntu 20.04] Long duration of complex matrix inverse
Date: Sun, 29 Mar 2020 16:57:50 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 
On 2020-03-29 15:36, Thomas D. Dean wrote:

On 2020-03-29 15:13, Thomas D. Dean wrote:



After installing libOpenBlas and rebuilding, and installing octave,

octave:1> a=(randn(2000) + i*randn(2000));
octave:2> tic; inv(a); toc
Elapsed time is 1.0736 seconds.
octave:3> a=(randn(5000) + i*randn(5000));
octave:4> tic; inv(a); toc
Elapsed time is 17.6952 seconds.

Tom Dean
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