Re: ssi on podcast

On Aug 26, 2012, at 9:35 PM, Brock Palen wrote:
>
> We did talk to the creator of ScaleMP, not open but this is what  
> our listeners asked to compare OpenSSi to: http://www.rce-cast.com/ 
> Podcast/rce-65-vsmp-scalemp.html
>

Yeah i realized some commercial spinoff of Mosix was there.

ScaleMP if i google it's $400 per socket or so.

Compare with Infiniband: OpenFED you can download for free.

suppose i would one day sell a chessprogram, my programs name is  
Diep, which runs SMP using scaleMP.

Then i ask $50 for my chessprogram and may give them support to  
connect 2 machines to 1 'supercomputer'
using software from scalemp that probably will have a cost of $800  
and some constant costs, say $2k or so?

Oh comeon.

This is not realistic price.

I'm sure there will be a few users, in fact if it can work with  
infiniband cards it would be interesting to put on top of infiniband  
here,
but of course not at a price of $3200.

My cluster is made out of dirt cheap nodes. They're litterally $200 a  
machine.

THAT is HPC computing. Using CHEAP hardware.

So in total i have 64 cores of 2.5Ghz core2 Xeon (L5420).

Then i would need to pay $400, so double the price of each node, to  
scale MP, for software?

If you want to make propaganda for those guys, be my guest, but this  
is not a realistic price.

Now infiniband can handle well over a million messages a second. What  
if i put 2 network cards (2 rails) in each node
to increase number of short messages a second?

Nearly all messages in case of a chessprogram are either 16 bytes,  
which is a write message, or 128 bytes, which is a read message
and that always goes to a random node.

Yet those cheap 8 core Xeon nodes of $200 a machine, they are not so  
slow. They get 1.5 million chesspositions a second for my software,
so preferably i do 3 million messages a second a node (1.5 million  
reads and 1.5 million writes a second).










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