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
