11-19-2012, 11:05 PM
VCL uses TCP/IP and is therefore routable, so yes, you can have nodes on different subnets. However, your router likely does not have the bandwidth necessary to support nodes on other subnets.
The bandwidth requirements depend entirely on what you are doing. For fast hashes and wordlist support you should dedicate ~ 500Mbps of bandwidth per GPU (PCIe v2.0 lane speed). For slow hashes and brute force, you can get away with less. Your broker node should have enough bandwidth for all of the GPUs in the cluster. For example, if you have 24 GPUs and are doing all fast hash or wordlist stuff, your broker will need an uplink of ~ 12Gbps.
VCL uses port tcp/255.
The bandwidth requirements depend entirely on what you are doing. For fast hashes and wordlist support you should dedicate ~ 500Mbps of bandwidth per GPU (PCIe v2.0 lane speed). For slow hashes and brute force, you can get away with less. Your broker node should have enough bandwidth for all of the GPUs in the cluster. For example, if you have 24 GPUs and are doing all fast hash or wordlist stuff, your broker will need an uplink of ~ 12Gbps.
VCL uses port tcp/255.