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*Dkim-signature*: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:mime-version:received:in-reply-to :references:from:date:message-id:subject:to:content-type :content-transfer-encoding; bh=GfK3TyXZAEDyFFbEoRczPad275kCBJ+k1geidCubTwc=; b=ioiwJBvlU6UA6KbU6t79nh2EafkhGGMWkhoc6FJQZI2iyUcZMomqCrwSp5GfIK/NY7 TUmLB2hFdSgqNawLJsOE6J7cWB5VfP1uI0NcK7QZ1iTypTbeCBwPsnFFc+A66yzY2C1v P9Lxo5HzxAnG2NY+uOuMDioBx2d0k9IdGWYoU=*Domainkey-signature*: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type:content-transfer-encoding; b=ad62idc0cnZS0/Hkwbcbs1TAnDRsmcpBLjireKbqhAW5/W4vYO5w3Gh21m2SkBanOx HSKoMJDf8DQolsfoejNWWIBHBxkcR9wCbWh/QsJWWxDlJmI4z3e3u5/CbAh9QHbOP5rj bolxKyPeEXOguomqzvVPhf8+rvSO74kWLqRrU=

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 > >

**Follow-Ups**:**Re: [eigen] How to obtain the matrices Q and R of a QR decomposition***From:*Gael Guennebaud

**References**:**[eigen] How to obtain the matrices Q and R of a QR decomposition***From:*Sebastian Birk

**Re: [eigen] How to obtain the matrices Q and R of a QR decomposition***From:*Gael Guennebaud

**Re: [eigen] How to obtain the matrices Q and R of a QR decomposition***From:*Sebastian Birk

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