On Wed, Feb 25, 2009 at 06:37:53AM -0500, Duncan Murdoch wrote:
> Philipp Pagel wrote:

>> A 80000x80000 matrix has 6.4 billion cells. If you assume 4 byte
>> (32bit) for a double precision floating point number that's an
>> impressive 25.6 Gb. Certainly does not fit into RAM on my machine.
>>   
>
> Doubles are 8 bytes, 

Oops - of course. Even worse...

cu
        Philipp

-- 
Dr. Philipp Pagel
Lehrstuhl für Genomorientierte Bioinformatik
Technische Universität München
Wissenschaftszentrum Weihenstephan
85350 Freising, Germany
http://mips.gsf.de/staff/pagel

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