just a crazy question

2007-11-01 Thread Robert LaMarca
Hi all.. 

Was planning to use Python (maybe C later) to mock parallel processing 
project.. About to put together a set of computers for this.. Wondered if 
anyone had any knowledge or ideas about using a playstation  running linux? 

My first impressions are that it is interesting.. for $400, one can get access 
to 6 smps under linux.. 

For about $300-$600 one could build basic x86 node. probably between 2 and 
4 cores on the x86 node, though the quads are still a bit pricey.

Upside of PS3... lotsa cores for less... Downside.. less, a lot less RAM.. Of 
course, the PS3 does not allow access to the graphics, but for my purposes, I 
don't mind that.. 

So.. how is Python for memory management?  ... 

My plan is to try measuring the memory usage of my python code elements and 
take a guess as to how it might perform on a cell-system.. . naturally a good 
idea in any event.. But.. Just thought maybe someone out in Python world would 
have an idea? 

Thanks!

Best
Robert





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Swap memory in Python ? - three questions

2008-07-29 Thread Robert LaMarca
Hi, 

I am using numpy and wish to create very large arrays.   My system is AMD 64 x 
2 Ubuntu 8.04.  Ubuntu should be 64 bit. I have 3gb RAM and a 15 GB swap drive. 
 

The command I have been trying to use is; 
g=numpy.ones([1000,1000,1000],numpy.int32)

This returns a memory error.  
A smaller array ([500,500,500]) worked fine.. 
Two smaller arrays again crashed the system.

So... I did the math.  a 1000x1000x1000 array at 32 bits should be around 4gb 
RAM... Obviously larger than RAM, but much smaller than the swap drive.

1. So... does Numpy have a really lot of overhead? Or is my system just not 
somehow getting to make use of the 15gb swap area. 
2. Is there a way I can access the swap area, or direct numpy to do so? Or do I 
have to write out my own numpy cache system... 
3. How difficult is it to use data compression internally on numpy arrays? 

thanks very much
Robert
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Apologies.. please disregard, delete desktop dating

2009-10-27 Thread Robert LaMarca



Hi... 

thought i was simply accepting an invitation from a friend on a social network 
(yes, desktop dating.. no i did no think i was going to date the person.. just 
thought it was a regular social network thing with an annoying cute name and i 
was just going to be nice and accept) 

.. turns out to be a very bad site .. 
please delete any message from desktop dating.. 

they are evil

thanks for your understanding in this moment of infamy
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