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+--- Thread: Does anybody know... (/thread-1830.html)
Does anybody know... - Toil - 12-11-2012
Does anybody know how those GFX cards were interjoined, in that massive rig that was recently displayed?(http://securityledger.com/wp-content/uploads/2012/12/Password_Cracking_HPC.jpg)
I'm not a hardware guy, but don't they all need to be plugged into a motherboard? Is he using a mobo that has 8 pcie slots?
Thanks.
RE: Does anybody know... - epixoip - 12-11-2012
I'm probably not very qualified to answer questions on this, but the large rig is a TYAN FT77B7015 barebones, and the other systems in the cluster are Chenbro RM41300-FS81 + Gigabyte GA-990FXA-UD7. The servers are linked via InfiniBand, and clustered via Virtual OpenCL.
What makes you think they aren't plugged into a motherboard?
RE: Does anybody know... - Toil - 12-11-2012
(12-11-2012, 08:41 PM)epixoip Wrote: I'm probably not very qualified to answer questions on this, but the large rig is a TYAN FT77B7015 barebones, and the other systems in the cluster are Chenbro RM41300-FS81 + Gigabyte GA-990FXA-UD7. The servers are linked via InfiniBand, and clustered via Virtual OpenCL.
What makes you think they aren't plugged into a motherboard?
Okay then.
What does "InfiniBand" do? How does it 'link' them? A method to communicate to each other, I guess?(Instead of interwebs)
Reading http://hashcat.net/wiki/doku.php?id=vcl_cluster_howto , did the guy just use any old plain computer for the "master node"?, then the TYAZN and Chenbro's as the slaves?
"What makes you think they aren't plugged into a motherboard?"
Don't know, just didn't think it did. But that motherboard shows enough slots, so I guess it's that!
Thanks
RE: Does anybody know... - epixoip - 12-11-2012
You can read about InfiniBand on Wikipedia: http://en.wikipedia.org/wiki/Infiniband
From what I hear, there is no master node; the guy runs the broker on a compute node. You can see more in the slidedeck from his presentation: http://passwords12.at.ifi.uio.no/Jeremi_Gosney_Password_Cracking_HPC_Passwords12.pdf
The TYAN chassis has enough slots, yes. It, and the Chenbro case as well, are designed for GPGPU.
RE: Does anybody know... - KT819GM - 12-11-2012
You can ask Jeremi more about these nodes
RE: Does anybody know... - undeath - 12-11-2012
(12-11-2012, 09:47 PM)KT819GM Wrote: You can ask Jeremi more about these nodes
hell, that guy is hard to catch