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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] SSE square root
- From: Gael Guennebaud <gael.guennebaud@xxxxxxxxx>
- Date: Fri, 27 Mar 2009 14:27:52 +0100
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On Fri, Mar 27, 2009 at 1:39 PM, Rohit Garg <rpg.314@xxxxxxxxx> wrote:
>> hm, sorry that's not entirely true. I increased the number of samples,
>> and for the fastest version:
>>
>> 1 iter = 42% of failures with max error = 2.78308e-07
>> 2 iter = 36% of failures with max error = 2.15188e-07
>> 3 iter = 34% of failures with max error = 1.87297e-07
>
> Failure? Do you mean that the error blows up for these values? But the
> max error is pretty low. At any rate, the increased precision is too
> low to iterate again compared to the perf hit, IMHO.
don't panic, failure means error>0
> --
> Rohit Garg
>
> http://rpg-314.blogspot.com/
>
> Senior Undergraduate
> Department of Physics
> Indian Institute of Technology
> Bombay
>
>
>