| Re: [eigen] How to obtain the matrices Q and R of a QR decomposition |
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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] How to obtain the matrices Q and R of a QR decomposition
- From: Gael Guennebaud <gael.guennebaud@xxxxxxxxx>
- Date: Tue, 16 Nov 2010 15:47:28 +0100
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this time I confirm the issue. In the meantime use -msse2 only.
gael
On Tue, Nov 16, 2010 at 3:40 PM, Sebastian Birk
<birk@xxxxxxxxxxxxxxxxxxxxx> wrote:
> Hi,
>
> when I compile that QR decomposition code using SSE extensions like with
> this optimization parameters
> -O3 -mtune=core2 -mfpmath=sse -msse4.1
> the computation of the QR decomposition causes an segmentation fault,
> which I tracked back to the source line
> return pmul(a, pconj(b));
> in the function
> template<> struct conj_helper<Packet1cd, Packet1cd, false,true>
> in SSE/Complex.h.
>
> Is this an error in Eigen or is it me again doing weird stuff? ;-)
>
> Sebastian
>
>