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 <[email protected]> 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 > _______________________________________________ > Computer-go mailing list > [email protected] > http://dvandva.org/cgi-bin/mailman/listinfo/computer-go > _______________________________________________ Computer-go mailing list [email protected] http://dvandva.org/cgi-bin/mailman/listinfo/computer-go
