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Re: Eigenvalues/vectors of Hermitian matrices
- From: John Abedor <jabedor at att dot net>
- To: John Ketchum <johnk at qualcomm dot com>
- Cc: gsl-discuss at sources dot redhat dot com
- Date: Wed, 06 Mar 2002 12:40:41 -0800
- Subject: Re: Eigenvalues/vectors of Hermitian matrices
- References: <5.1.0.14.0.20020306125046.01ee3178@mail1.qualcomm.com>
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