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    Thread: 6x7970 - cards not running at full utilization
Post: 6x7970 - cards not running at full utilization

Folks, When testing my rig with mysql323 - I could get 97-99% utilization on each card. I'm now working on some NTLM hashes (trying all upper /lower case with numbers and symbols) and the utiliz...
flux Old oclHashcat Support 1 5,122 11-07-2014, 03:19 AM
    Thread: Ubuntu won't boot with more than 4 GPU's
Post: RE: Ubuntu won't boot with more than 4 GPU's

In the interest of helping others, I finally figured this out last week. The issue was running PCIE1x simulatenously with 4x and 16x. The solution was to set a kernel boot option in grub of iommo=s...
flux General Help 12 26,929 11-07-2014, 03:15 AM
    Thread: Ubuntu won't boot with more than 4 GPU's
Post: RE: Ubuntu won't boot with more than 4 GPU's

More news. I can get the system to boot with 6 cards on Ubuntu 14.04 server with 14.9 ati drivers. However, it isn't stable. Hashcat runs but it seems to hang after a few minutes. At this poin...
flux General Help 12 26,929 10-30-2014, 02:07 AM
    Thread: Ubuntu won't boot with more than 4 GPU's
Post: RE: Ubuntu won't boot with more than 4 GPU's

Okay. So with 64bit Ubuntu I get a kernel panic whilst booting even with 2 cards plugged in if one of them is plugged in to the short pcie1x slot. It seems that the system will never boot if any...
flux General Help 12 26,929 10-29-2014, 07:01 PM
    Thread: Ubuntu won't boot with more than 4 GPU's
Post: RE: Ubuntu won't boot with more than 4 GPU's

Hmmm okay. I suppose that makes sense, the cards would draw considerably more power with the proper driver installed. Last night I also went from 32bit to 64bit ubuntu. Interestingly, now when I co...
flux General Help 12 26,929 10-29-2014, 04:14 PM
    Thread: Ubuntu won't boot with more than 4 GPU's
Post: RE: Ubuntu won't boot with more than 4 GPU's

I managed to find some usb risers here locally tonight. I've swapped out all 6 risers. Still no luck. I can run any combination of 4 out of the 6 cards through oclHashcat's benchmark without an ...
flux General Help 12 26,929 10-29-2014, 06:02 AM
    Thread: Ubuntu won't boot with more than 4 GPU's
Post: RE: Ubuntu won't boot with more than 4 GPU's

epixoip Wrote: (10-29-2014, 02:05 AM) -- risers are notorious for causing intermittent problems and are almost always the source of any issues you are encountering. -- Sweet. Any opinion on the has...
flux General Help 12 26,929 10-29-2014, 02:09 AM
    Thread: Ubuntu won't boot with more than 4 GPU's
Post: RE: Ubuntu won't boot with more than 4 GPU's

epixoip Wrote: (10-29-2014, 01:56 AM) -- hanging while loading X means the driver is stuck in iowait trying to communicate with a gpu that was there, but is now not there. the issue is most likely wi...
flux General Help 12 26,929 10-29-2014, 02:00 AM
    Thread: Ubuntu won't boot with more than 4 GPU's
Post: Ubuntu won't boot with more than 4 GPU's

I'm having an issue with a rig I'm building. I have followed the hashcat wiki to build Ubuntu server 14.04.4 and install the ATI 14.301.1001 driver. The driver installs fine and I can get up to 4 card...
flux General Help 12 26,929 10-29-2014, 01:54 AM