When lapack was linked to atlas the test/time failed, why?

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When lapack was linked to atlas the test/time failed, why?

Postby ww_wendy » Mon Jan 17, 2005 12:00 pm

I want to know how I solve the problem!
The problem is as follows during "make":
../../tmglib_SUN4SOL2.a ../../lapack_SUN4SOL2.a /magpar-0_3_1/libs/ATLAS/lib/SunOS_SunUS5/libf77blas.a -o ../xlintsts
未定义 文件中的
Posts: 1
Joined: Sun Jan 16, 2005 10:45 pm

Postby Julien Langou » Wed Jan 19, 2005 12:13 am


I think in the make.inc file you have set:
Code: Select all
BLASLIB = /magpar-0_3_1/libs/ATLAS/lib/SunOS_SunUS5/libf77blas.a

and not
Code: Select all
BLASLIB = /magpar-0_3_1/libs/ATLAS/lib/SunOS_SunUS5/libf77blas.a /magpar-0_3_1/libs/ATLAS/lib/SunOS_SunUS5/libatlas.a

which may explain the error during the linkage.
You need both library: libf77blas.a and libatlas.a (and in this order), as explained in

However note that even though you manage to pass the linkage step then passing the tests of LAPACK with the ATLAS-BLAS is not trivial.

and you may also be interested in reading:
http://math-atlas.sourceforge.net/errat ... completelp

Julien Langou

Julien Langou
Posts: 835
Joined: Thu Dec 09, 2004 12:32 pm
Location: Denver, CO, USA

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