Bill Allombert on Fri, 10 Feb 2012 21:34:59 +0100

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Re: Please test pari-2.5.1 prerelease 2

On Fri, Feb 10, 2012 at 07:37:02PM +0100, Leonardo Cangelmi wrote:
> I tested pari-2.5.1 (the prerelease 2 and then the stable version). There
> are no problems in compilation and tests. However, the total time taken by
> test-all is longer than in version 2.5.0 (see the attached bench files).

Thanks for your careful tests!

Note that when we fix a bug in 2.5.1, we generally add a new test, so it is
expected that the new testsuite takes more time. However, in this case the
difference is large and is indeed a regression.

The largest slowdown is in test-resultant. It was introduced by
the commit 5301c466d2 which fixes this bug:
    18- subst(Y/X,X,x) -> 0

We will try to address that in 2.5.2.