Hi,
I've been testing some Office13 cracking on 8 GPU rig (RTX 2080Ti). I've run into something weird about the GPU utilization. I've played with --skip and --limit and found out that when the limit is kinda small only some GPUs are used (no surprise here), but the computation still took like 5-10minutes which I do not consider of that short time.
Could someone, please, explain to me what is going on in the examples below and why only a few GPUs are used or have low utilization? The cracking speed of one card is around 21,5k H/s.
The reason why I'm asking is that I generally have got limited time slots in which I can compute on the nodes and I need to get the most out of the nodes.
Also, what other hash-modes are probably working the same? Is it something common for the slow hash-modes?
Thanks
Note: that 10-15% utilized card was used for RDP.
I've been testing some Office13 cracking on 8 GPU rig (RTX 2080Ti). I've run into something weird about the GPU utilization. I've played with --skip and --limit and found out that when the limit is kinda small only some GPUs are used (no surprise here), but the computation still took like 5-10minutes which I do not consider of that short time.
Could someone, please, explain to me what is going on in the examples below and why only a few GPUs are used or have low utilization? The cracking speed of one card is around 21,5k H/s.
The reason why I'm asking is that I generally have got limited time slots in which I can compute on the nodes and I need to get the most out of the nodes.
Also, what other hash-modes are probably working the same? Is it something common for the slow hash-modes?
Thanks
Note: that 10-15% utilized card was used for RDP.
Code:
$ .\hashcat64.exe -m 9600 --optimized-kernel-enable -a 3 <hash> -s 0 -l 10000 ?a?a?a?a?a?a?a?a
Hardware.Mon.#1..: Temp: 43c Fan: 30% Util: 84% Core:1935MHz Mem:6800MHz Bus:1
Hardware.Mon.#2..: Temp: 38c Fan: 27% Util: 0% Core:1350MHz Mem:6800MHz Bus:1
Hardware.Mon.#3..: Temp: 35c Fan: 27% Util: 0% Core:1350MHz Mem:6800MHz Bus:1
Hardware.Mon.#4..: Temp: 35c Fan: 27% Util: 0% Core:1350MHz Mem:6800MHz Bus:1
Hardware.Mon.#5..: Temp: 37c Fan: 27% Util: 0% Core:1350MHz Mem:6800MHz Bus:1
Hardware.Mon.#6..: Temp: 39c Fan: 29% Util: 0% Core:1350MHz Mem:6800MHz Bus:1
Hardware.Mon.#7..: Temp: 34c Fan: 27% Util: 0% Core:1350MHz Mem:6800MHz Bus:1
Hardware.Mon.#8..: Temp: 45c Fan: 32% Util: 13% Core:1890MHz Mem:6800MHz Bus:1
Code:
$ .\hashcat64.exe -m 9600 --optimized-kernel-enable -a 3 <hash> -s 0 -l 80000 ?a?a?a?a?a?a?a?a
Hardware.Mon.#1..: Temp: 59c Fan: 51% Util: 85% Core:1800MHz Mem:6800MHz Bus:1
Hardware.Mon.#2..: Temp: 34c Fan: 27% Util: 0% Core: 300MHz Mem: 405MHz Bus:1
Hardware.Mon.#3..: Temp: 32c Fan: 27% Util: 0% Core: 300MHz Mem: 405MHz Bus:1
Hardware.Mon.#4..: Temp: 33c Fan: 27% Util: 0% Core: 300MHz Mem: 405MHz Bus:1
Hardware.Mon.#5..: Temp: 34c Fan: 27% Util: 0% Core: 300MHz Mem: 405MHz Bus:1
Hardware.Mon.#6..: Temp: 46c Fan: 29% Util: 87% Core:1890MHz Mem:6800MHz Bus:1
Hardware.Mon.#7..: Temp: 32c Fan: 27% Util: 0% Core: 300MHz Mem: 405MHz Bus:1
Hardware.Mon.#8..: Temp: 44c Fan: 31% Util: 10% Core:1890MHz Mem:6800MHz Bus:1
Code:
$ .\hashcat64.exe -m 9600 --optimized-kernel-enable -a 3 <hash> -s 0 -l 160000 ?a?a?a?a?a?a?a?a
Hardware.Mon.#1..: Temp: 50c Fan: 34% Util: 84% Core:1815MHz Mem:6800MHz Bus:1
Hardware.Mon.#2..: Temp: 37c Fan: 27% Util: 0% Core:1350MHz Mem:6800MHz Bus:1
Hardware.Mon.#3..: Temp: 35c Fan: 27% Util: 0% Core:1350MHz Mem:6800MHz Bus:1
Hardware.Mon.#4..: Temp: 42c Fan: 27% Util: 88% Core:1875MHz Mem:6800MHz Bus:1
Hardware.Mon.#5..: Temp: 35c Fan: 27% Util: 0% Core:1350MHz Mem:6800MHz Bus:1
Hardware.Mon.#6..: Temp: 35c Fan: 27% Util: 0% Core:1350MHz Mem:6800MHz Bus:1
Hardware.Mon.#7..: Temp: 50c Fan: 34% Util: 88% Core:1785MHz Mem:6800MHz Bus:1
Hardware.Mon.#8..: Temp: 45c Fan: 30% Util: 15% Core:1890MHz Mem:6800MHz Bus:1
Code:
$ .\hashcat64.exe -m 9600 --optimized-kernel-enable -a 3 <hash> -s 0 -l 1000000 ?a?a?a?a?a?a?a?a
Hardware.Mon.#1..: Temp: 60c Fan: 52% Util: 91% Core:1785MHz Mem:6800MHz Bus:1
Hardware.Mon.#2..: Temp: 61c Fan: 55% Util: 90% Core:1785MHz Mem:6800MHz Bus:1
Hardware.Mon.#3..: Temp: 60c Fan: 55% Util: 92% Core:1785MHz Mem:6800MHz Bus:1
Hardware.Mon.#4..: Temp: 59c Fan: 54% Util: 91% Core:1770MHz Mem:6800MHz Bus:1
Hardware.Mon.#5..: Temp: 60c Fan: 55% Util: 93% Core:1800MHz Mem:6800MHz Bus:1
Hardware.Mon.#6..: Temp: 60c Fan: 55% Util: 91% Core:1830MHz Mem:6800MHz Bus:1
Hardware.Mon.#7..: Temp: 60c Fan: 56% Util: 92% Core:1800MHz Mem:6800MHz Bus:1
Hardware.Mon.#8..: Temp: 60c Fan: 55% Util: 94% Core:1815MHz Mem:6800MHz Bus:1