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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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