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From Jiamin Lu <jiamin....@googlemail.com>
Subject Re: How many real cores in large type instances on EC2 ?
Date Fri, 25 Nov 2011 06:31:05 GMT
Dear Harsh,

Thanks for your reply and suggestion.
I will read your recommendation carefully.
If I find something important, I will left my answer to this thread too,
since I think EC2 is quite important in parallel processing.

Thanks


On Thu, Nov 24, 2011 at 6:31 PM, Harsh J <harsh@cloudera.com> wrote:

> Jiamin,
>
> Does AMZN not carry a forum of their own for these questions? They'd
> be the best to ask really.
>
> I do not know what an "EC2 Compute Unit" means, but the page clearly
> says two virtual cores. Perhaps this may help understand:
>
> http://gevaperry.typepad.com/main/2009/03/figuring-out-the-roi-of-infrastructureasaservice.html
>
> On Thu, Nov 24, 2011 at 9:10 PM, Jiamin Lu <jiamin.luu@googlemail.com>
> wrote:
> > Hi, all
> >
> > I am using the Amazon EC2, with their large instances.
> > Amazon claims these large type instances have 4 EC2 Compute units (2
> virtual
> > cores with 2 EC2 Compute Units each).
> > But according to my observation, it seems like they only have two cores.
> >
> > I checked the /proc/cpuinfo, which shows there are only two processors,
> > I also used the top command, and it also says only two cpu there.
> >
> > Can someone tell me actually how many cores are contained inside these
> large
> > instances?
> > Did I misunderstand these terms that Amazon talks about ??
> >
> > Thanks
> >
> > Jiamin Lu
> >
> >
>
>
>
> --
> Harsh J
>



-- 
Jiamin Lu
Fernuniversität Hagen
D-58084 Hagen
GERMANY

Phone: +49-2331-987-4276
Email: Jiamin.Luu@gmail.com

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