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## Re: Memory allocation for very large matrices??

**From**: |
Vincent Stanford |

**Subject**: |
Re: Memory allocation for very large matrices?? |

**Date**: |
Sat, 02 Dec 2000 16:35:59 -0500 |

Dear Dennis,
8*16,641^2 = 2,215,383,048 = 2.2Gb. The address space of most of the
Intel 32 bit processors is 2Gb. In order to run this one in RAM, you
might consider an SGI with a MIPS 10k or a DEC Alpha with enough RAM.
How soon the "two gig barrier" came up. *Sigh* Sixty-four bit AMD
Sledgehammer and Intel Itanium chips will do it in a few months on the
PC architecture if you want to wait. Sorry I don't have a better
answer.
Vince Stanford
Dennis Gaidashev wrote:
>* *
>* I am trying to do the Singular Value Decomposition of a very large matrix*
>* (16641 by 16641) with the rank smaller than dimension by one. The*
>* matrix is read from a file, the three resulting matrices are*
>* writen into files. Here is the simple program I am using:*
>* *
>* *
>* I would appreciate any kind of advice on this.*
>* Thank you,*
>* Dennis Gaidashev*
>* *
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Octave is freely available under the terms of the GNU GPL.
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