[Computer-go] Elastic Cloud

ds ds2 at physik.de
Fri Feb 24 08:56:43 PST 2012


I wonder if this instance should not have 16 cores? I read the german
translation of amazon, and this sounds as if there are two 8 core xeons?

Thanks Detlef

Am Mittwoch, den 14.12.2011, 16:00 -1000 schrieb Mark Boon: 
> On Wed, Dec 7, 2011 at 8:28 PM, Aja Huang <ajahuang at gmail.com> wrote:
> > In the UEC Cup last weekend, I rented a machine  from Amazon EC2 to run
> > Erica:
> >
> > High-CPU Extra Large Windows Instance (c1.xlarge)   $1.16 per/hour
> > (High-CPU Extra Large Instance 7 GB of memory, 20 EC2 Compute Units (8
> > virtual cores with 2.5 EC2 Compute Units each), 1690 GB of local instance
> > storage, 64-bit platform)
> >
> > However, according to my testing, this machine is around 1.5 times slower
> > than my 4-core (i7 950) PC. It is a "high-level" instance aleady but
> > actually very slow. A competition on equal hardware from Amazon EC2 might be
> > interesting, but such weak hardware might not reflect program's performance
> > on large simulations.
> >
> 
> Just now I ran a short test on a new instance type that became
> available on Amazon today.
>  These are the specs from their web-site:
> 
> 60.5 GB of memory
> 88 EC2 Compute Units (eight-core 2 x Intel Xeon)
> 3370 GB of instance storage
> 64-bit platform
> I/O Performance: Very High (10 Gigabit Ethernet)
> API name: cc2.8xlarge
> Cost: $2.40/h
> 
> Running my little Java benchmark showed the highest number of playouts
> using 8 threads, ~155 Kpps. That compares rather poorly to my 4 year
> old MacPro that does ~240 Kpps. So indeed not as hot as you might
> believe at first from the specs.
> 
> Mark
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