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Re: Eigenvalues/vectors of Hermitian matrices
- From: John Ketchum <johnk at qualcomm dot com>
- To: John Abedor <jabedor at att dot net>
- Cc: gsl-discuss at sources dot redhat dot com
- Date: Wed, 06 Mar 2002 15:56:59 -0500
- Subject: Re: Eigenvalues/vectors of Hermitian matrices
- References: <5.1.0.14.0.20020306125046.01ee3178@mail1.qualcomm.com>
OK, thanks-- that was it. The problem went away when I built gsl with
optimization turned off.
Do you know of any reason why I should avoid upgrading to gcc 3.0.x?
At 12:40 PM 3/6/2002 -0800, John Abedor wrote:
>John Ketchum wrote:
>
> > I have installed gsl-1.0. When doing make check, i get many failure
> > messages in the eigensystem tests, all concerning eigen analysis of
> > hermitian matrices. The messages are of the form:
> >
> > FAIL: herm(4), eigenvalue(2,3), real, val/asc (0 observed vs
> > 9.74766689339349166e+127 expected)
> >
> > or similar. All of the tests for real symmetric tests seem to pass.
> >
> > I have done the install on three similar RedHat 7.2 systems, and also tried
> > to install gsl-1.1, all with the same result.
> >
> > kernel 2.4.7-10 and 2.4.9-13
> > gcc 2.96-98
> >
> > John Ketchum
> > Qualcomm Inc.
>
>This sounds like the usual gcc 2.96 compiler bug. It's mentioned in the
>MACHINES file (albeit under Compaq/DEC Alpha). You can upgrade
>your compiler or turn off optimizations
>
>regards,
>John
John Ketchum
Qualcomm Inc.
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