hashcat Forum

Hi All,

I am having issues with a box running headless, as soon as I unplug the monitor the speed drops drastically, I am guessing this is an OS problem more than an oclHashcat problem?

Running driver:
[ 1.895598] [fglrx] module loaded - fglrx 14.30.4 [Sep 15 2014] with 3 minors
installed from: amd-catalyst-14-9-linux-x86-x86-64.zip

Monitor Plugged In:
$ ./oclHashcat64.bin -b -m 1000
oclHashcat v1.36 starting in benchmark-mode...

Device #1: Hawaii, 3072MB, 1000Mhz, 44MCU
Device #2: Cayman, 2012MB, 800Mhz, 24MCU
Device #3: Hawaii, 3072MB, 1000Mhz, 44MCU

Hashtype: NTLM
Workload: 1024 loops, 256 accel

Speed.GPU.#1.: 22088.6 MH/s
Speed.GPU.#2.: 9769.7 MH/s
Speed.GPU.#3.: 22056.4 MH/s
Speed.GPU.#*.: 53914.7 MH/s

Started: Tue May 12 14:31:41 2015
Stopped: Tue May 12 14:31:58 2015

Monitor Unplugged:
$ ./oclHashcat64.bin -b -m 1000
oclHashcat v1.36 starting in benchmark-mode...

Device #1: Hawaii, 3072MB, 1000Mhz, 44MCU
Device #2: Hawaii, 3072MB, 1000Mhz, 44MCU
Device #3: Hawaii, 3072MB, 1000Mhz, 44MCU

Hashtype: NTLM
Workload: 1024 loops, 256 accel

Speed.GPU.#1.: 7680.8 MH/s
Speed.GPU.#2.: 7600.8 MH/s
Speed.GPU.#3.: 7640.4 MH/s
Speed.GPU.#*.: 22922.1 MH/s

Started: Tue May 12 14:38:00 2015
Stopped: Tue May 12 14:38:16 2015

Any help would be appreciated.

Cheers,

Do you have Crossfire enabled?

(05-12-2015, 04:51 PM)epixoip Wrote: [ -> ]Do you have Crossfire enabled?

I haven't intentionally enabled it, output from the commands below suggest it isn't.

$ amdconfig --lsch
No Multiple GPU chains defined
$ amdconfig --lscc

Master adapter: 0. 01:00.0 AMD Radeon R9 200 Series
Candidates: none
Master adapter: 1. 02:00.0 AMD Radeon HD 6900 Series
Candidates: none
Master adapter: 2. 03:00.0 AMD Radeon R9 200 Series
Candidates: none
$ amdconfig --lscs
Candidate Combination:
Master: 0:0:0
Slave: 0:0:0
CrossFire is disabled on current device
CrossFire Diagnostics:
CrossFire can work with P2P mapping through GART
Candidate Combination:
Master: 0:0:0
Slave: 0:0:0
CrossFire is disabled on current device
CrossFire Diagnostics:
CrossFire can work with P2P mapping through GART
Candidate Combination:
Master: 0:0:0
Slave: 0:0:0
CrossFire is disabled on current device
CrossFire Diagnostics:
CrossFire can work with P2P mapping through GART

Something wrong here, on first bench it's Cayman, on second Hawaii?

I think these are two separate systems, and I think system #2 is using Catalyst 14.12 while system #1 is using Catalyst 14.9. The output here is almost identical to Catalyst 14.12 without setting GPU_NUM_COMPUTE_RINGS.

(05-12-2015, 09:23 PM)epixoip Wrote: [ -> ]I think these are two separate systems, and I think system #2 is using Catalyst 14.12 while system #1 is using Catalyst 14.9. The output here is almost identical to Catalyst 14.12 without setting GPU_NUM_COMPUTE_RINGS.

It's not, first one is with an hdmi monitor plugged in, second with it unplugged.

Hardware:
CPU: Intel Pentium G3240
RAM: 4GB DDR3
Mobo: Asrock H61 BTC
PSU: EVGA 1300W
GPUs: [attached via powered risers]
2 x AMD 290X
1 x AMD 6950

*edit* Attached a photo for good measure, its not finished yet so ignore the messiness.

Bump, anyone have any ideas? I've currently just left a monitor plugged in for now.

If there is no software solution, would https://www.ebay.co.uk/itm/HDMI-dummy-plu...258c29d53b solve my problem?

Have you tried removing the 6950? It seems to be causing some weirdness in there.