Message-ID: <14865.17572.984099.576172@mithrandir.hornik.net>
Date: 2000-11-14T13:56:52Z
From: Kurt Hornik
Subject: atlas for R1.1.1 and R1.2 different?
In-Reply-To: <3A1133B4.7E7EBC5A@physik.uni-marburg.de>
>>>>> Marcus Eger writes:
> Douglas Bates wrote:
>> I don't think the presence or absence of atlas should affect the
>> results from integrate. The atlas library is an enhanced, faster
>> version of the basic linear algebra subroutines (blas) and a few of
>> the lapack subroutines. Unless the C code in integrate is calling
>> these subroutines explicitly, atlas should not affect the results.
> An example for the different behaviour is the following:
> ...
> I'm wondering why the same integrate package under R1.1.1 uses atlas,
> but under R1.2 it doesn't.
The configure detection of fast BLAS libraries is different between
these versions, but I don't think that this is the reason.
I suspect that your R 1.1.1 is from a .deb file which requires package
atlas2, and the R 1.2.0 is compiled from source but cannot find atlas
(look at config.log) because package atlas2-dev is not installed.
Bingo?
-k
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