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Re: Eigenvalues/vectors of Hermitian matrices


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





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