On: Network benchmarks between EC2 nodes and from EC2 to S3

[downer]

CPU info:

 Small Instance : 1x 2.6 GHz Dual-Core AMD Opteron(tm) Processor 2218 HE w/1024 KB cache
 Large Instance : 2x 2.0 GHz Dual Core AMD Opteron(tm) Processor 270 w/1024 KB cache
 Extra-Large    : 4x 2.0 GHz Dual Core AMD Opteron(tm) Processor 270 w/1024 KB cache

...but since each dual-core shows up once instead of twice in /proc/cpuinfo, instead of getting 2, 4, or 8 actual cores I think it's 1, 2, or 4. Not sure if this means on e.g. the Large you get 1 core on each of 2 CPUs, or both cores on 1 CPU (which could matter in the case of shared cache and also for memory access).

"2 compute units" means a 2 GHz core instead of 1 GHz, not 2 separate cores. So I suppose on the Small you get half of one 2.6 GHz core.

BTW, for Python people, you can use Python tools to access AWS (instead of the official Java tools): http://jimmyg.org/2007/09/01/amazon-ec2-for-people-who-prefe...