Re: [PATCH 1/2] Change random seeds to 64bit and drop re-crcing

2011-09-28 Thread Richard Guenther
On Tue, Sep 27, 2011 at 11:30 PM, Andi Kleen wrote: > From: Andi Kleen > > I had some trouble with random build failures in a large LTO project > and it turned out to be random seed collisions in a highly parallel build > (thanks to Honza for suggesting that) > > There were multiple problems: > -

[PATCH 1/2] Change random seeds to 64bit and drop re-crcing

2011-09-27 Thread Andi Kleen
From: Andi Kleen I had some trouble with random build failures in a large LTO project and it turned out to be random seed collisions in a highly parallel build (thanks to Honza for suggesting that) There were multiple problems: - The way to generate the random seed is pure (milli seconds plus pi