11-01-2013, 05:01 PM
Interesting results-
-I've reconfigured to run the broker on a compute node with two 7990s
-this connects over gigabit to another compute node with two 6970s
This is a -a 3 -m 500 session (brute force, md5crypt); all six GPUs detect properly.
Running in VCL, the four 7990 GPUs are slow as hell (~150K/sec), even though they are on the same physical box as the broker, so "local".
The two 6970s on the compute node, however, are running at normal speed (~2200K/sec), even though they are going through the gigabit network!
To me, this is VCL not working right since the networked node is reaching normal speeds; I had thought the network was the bottleneck, apparently not?
-I've reconfigured to run the broker on a compute node with two 7990s
-this connects over gigabit to another compute node with two 6970s
This is a -a 3 -m 500 session (brute force, md5crypt); all six GPUs detect properly.
Running in VCL, the four 7990 GPUs are slow as hell (~150K/sec), even though they are on the same physical box as the broker, so "local".
The two 6970s on the compute node, however, are running at normal speed (~2200K/sec), even though they are going through the gigabit network!
To me, this is VCL not working right since the networked node is reaching normal speeds; I had thought the network was the bottleneck, apparently not?