09-23-2020, 05:35 PM
(This post was last modified: 09-23-2020, 05:40 PM by rickcast13.)
Hi, guys!
I have a pc with Intel Xeon + RAM 16GB + Windows 10 x64 and I use the latest version of hashcat 6.1.1.
My config for GPUs:
But when I try to use hashcat at full speed with 8 GPUs I have this error:
I did several tries and discovered a very strange RAM limitation:
If I use 1 or 2 or 3 GPUs - everything is good and working ok:
1 GPU - Host memory required for this attack: 1164 MB
2 GPUs - Host memory required for this attack: 2329 MB
3 GPUs - Host memory required for this attack: 3494 MB
4 GPUs - cuMemAlloc(): out of memory
...
8 GPUs - cuMemAlloc(): out of memory
But If I try to use more than 3 GPUs i.e. 4 or 8 simultaneously
I always receive error "out of memory". And the same situation for both CUDA and OpenCL.
As I understand it looks like x32 limitation of max RAM 4G.
But my OS is x64 and I have more than 4GB of RAM.
Is there a way to run hashcat in x64 compatible mode?
Early it were `hashcat64` and `hashcat32` but now it has only one binary.
Please help me to understand what I'm doing wrong and how to fix it.
I have a pc with Intel Xeon + RAM 16GB + Windows 10 x64 and I use the latest version of hashcat 6.1.1.
My config for GPUs:
Quote:CUDA API (CUDA 11.0)
====================
* Device #1: GeForce RTX 2080 Ti, 9248/11264 MB, 68MCU
* Device #2: GeForce RTX 2080 Ti, 9248/11264 MB, 68MCU
* Device #3: GeForce RTX 2080 Ti, 9248/11264 MB, 68MCU
* Device #4: GeForce RTX 2080 Ti, 9248/11264 MB, 68MCU
* Device #5: GeForce RTX 2080 Ti, 9248/11264 MB, 68MCU
* Device #6: GeForce RTX 2080 Ti, 9248/11264 MB, 68MCU
* Device #7: GeForce RTX 2080 Ti, 9248/11264 MB, 68MCU
* Device #8: GeForce RTX 2080 Ti, 9248/11264 MB, 68MCU
But when I try to use hashcat at full speed with 8 GPUs I have this error:
Quote:Insufficient memory available
cuMemAlloc(): out of memory
I did several tries and discovered a very strange RAM limitation:
If I use 1 or 2 or 3 GPUs - everything is good and working ok:
1 GPU - Host memory required for this attack: 1164 MB
2 GPUs - Host memory required for this attack: 2329 MB
3 GPUs - Host memory required for this attack: 3494 MB
4 GPUs - cuMemAlloc(): out of memory
...
8 GPUs - cuMemAlloc(): out of memory
But If I try to use more than 3 GPUs i.e. 4 or 8 simultaneously
I always receive error "out of memory". And the same situation for both CUDA and OpenCL.
As I understand it looks like x32 limitation of max RAM 4G.
But my OS is x64 and I have more than 4GB of RAM.
Is there a way to run hashcat in x64 compatible mode?
Early it were `hashcat64` and `hashcat32` but now it has only one binary.
Please help me to understand what I'm doing wrong and how to fix it.