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Good morning,
I installed the necessary drivers and software explained in www.hashcat.net/faq/wrongdriver for my NVIDIA K1200 graphic card.
Everything went well. When I type the command "hashcat --benchmark" I'm shown following answer:
"* Device #1: Not a native Intel OpenCL runtime. Expect massive speed loss.
You can use --force to override, but do not report related errors."
Is there anybody who can tell me what's wrong there?
TIA
Best regards
Miksch
Posts: 2,255
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Joined: Feb 2013
you probably have a Intel CPU in addition to your GPU.
If you have a CPU with OpenCL support you would need to install the OpenCL driver from software.intel.com to use your CPU too.
Does cracking with your GPU already work for you ?
If you only intend to crack with GPU, you won't need to worry about your CPU driver (and you can ignore it).
please always post the whole device/driver section of the hashcat output, because you should have many OpenCL Platforms/Vendors/Devices etc.
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02-01-2019, 02:00 PM
(This post was last modified: 02-01-2019, 04:11 PM by Miksch.)
Hi Phil  ,
thank you for your quick answer!
Yes, I have an Intel graphic controller on board, but I want to use my NVIDIA graphic card, that isn't detected and I don't know why.
The output of hashcat is
* Device #1: Not a native Intel OpenCL runtime. Expect massive speed loss.
You can use --force to override, but do not report related errors.
No devices found/left.
TIA
Best regards
Miksch
I have a complement to maike.
When I type the command clinfo there appears this message
"clinfo: error while loading shared libraries: libOpenCL.so.1: cannot open shared object file: No such file or directory"
When I start "hashcat --benchmark" there is following error hint: "Cannot find an OpenCL ICD loader library." That allthough I have installed nvidia-driver 3.90x.
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You need to install OpenCL.
Code: apt-get install ocl-icd-libopencl1 opencl-headers clinfo
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(02-01-2019, 10:43 PM)soxrok2212 Wrote: You need to install OpenCL.
Code: apt-get install ocl-icd-libopencl1 opencl-headers clinfo
Hi Soxrok2212 ,
thank you for your reply. Yes, I know. I've already installed it. But it don't works.
Code: Package: ocl-icd-libopencl1
Status: install ok installed
Code: Package: opencl-headers
Status: install ok installed
Code: Package: clinfo
Status: install ok installed
When I give the command I get this output
Code: hashcat (v5.1.0) starting in benchmark mode...
Benchmarking uses hand-optimized kernel code by default.
You can use it in your cracking session by setting the -O option.
Note: Using optimized kernel code limits the maximum supported password length.
To disable the optimized kernel code in benchmark mode, use the -w option.
* Device #1: Not a native Intel OpenCL runtime. Expect massive speed loss.
You can use --force to override, but do not report related errors.
No devices found/left.
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Have you rebooted after you installed? What does clinfo output?
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02-02-2019, 07:55 PM
(This post was last modified: 02-02-2019, 07:59 PM by Miksch.)
(02-02-2019, 06:24 PM)soxrok2212 Wrote: Have you rebooted after you installed? What does clinfo output?
Hi soxrok2212,
thank you for your help again! Yes, I've rebooted the system. The output of is appended to this post.
I just have seen, that the appendix isn't posted, so I'll post it here as code:
Code: Number of platforms 1
Platform Name Portable Computing Language
Platform Vendor The pocl project
Platform Version OpenCL 1.2 pocl 1.2 None+Asserts, LLVM 6.0.1, SLEEF, DISTRO, POCL_DEBUG
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd
Platform Extensions function suffix POCL
Platform Name Portable Computing Language
Number of devices 1
Device Name pthread-Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz
Device Vendor GenuineIntel
Device Vendor ID 0x6c636f70
Device Version OpenCL 1.2 pocl HSTR: pthread-x86_64-pc-linux-gnu-skylake
Driver Version 1.2
Device OpenCL C Version OpenCL C 1.2 pocl
Device Type CPU
Device Profile FULL_PROFILE
Device Available Yes
Compiler Available Yes
Linker Available Yes
Max compute units 8
Max clock frequency 4200MHz
Device Partition (core)
Max number of sub-devices 8
Supported partition types equally, by counts
Supported affinity domains (n/a)
Max work item dimensions 3
Max work item sizes 4096x4096x4096
Max work group size 4096
Preferred work group size multiple 8
Preferred / native vector sizes
char 16 / 16
short 16 / 16
int 8 / 8
long 4 / 4
half 0 / 0 (n/a)
float 8 / 8
double 4 / 4 (cl_khr_fp64)
Half-precision Floating-point support (n/a)
Single-precision Floating-point support (core)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Correctly-rounded divide and sqrt operations Yes
Double-precision Floating-point support (cl_khr_fp64)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Address bits 64, Little-Endian
Global memory size 31514038272 (29.35GiB)
Error Correction support No
Max memory allocation 8589934592 (8GiB)
Unified memory for Host and Device Yes
Minimum alignment for any data type 128 bytes
Alignment of base address 1024 bits (128 bytes)
Global Memory cache type Read/Write
Global Memory cache size 8388608 (8MiB)
Global Memory cache line size 64 bytes
Image support Yes
Max number of samplers per kernel 16
Max size for 1D images from buffer 536870912 pixels
Max 1D or 2D image array size 2048 images
Max 2D image size 16384x16384 pixels
Max 3D image size 2048x2048x2048 pixels
Max number of read image args 128
Max number of write image args 128
Local memory type Global
Local memory size 4194304 (4MiB)
Max number of constant args 8
Max constant buffer size 4194304 (4MiB)
Max size of kernel argument 1024
Queue properties
Out-of-order execution No
Profiling Yes
Prefer user sync for interop Yes
Profiling timer resolution 1ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels Yes
printf() buffer size 16777216 (16MiB)
Built-in kernels (n/a)
Device Extensions cl_khr_byte_addressable_store cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_3d_image_writes cl_khr_fp64 cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_fp64
NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) Portable Computing Language
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) Success [POCL]
clCreateContext(NULL, ...) [default] Success [POCL]
clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) Success (1)
Platform Name Portable Computing Language
Device Name pthread-Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) Success (1)
Platform Name Portable Computing Language
Device Name pthread-Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL) Success (1)
Platform Name Portable Computing Language
Device Name pthread-Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz
ICD loader properties
ICD loader Name OpenCL ICD Loader
ICD loader Vendor OCL Icd free software
ICD loader Version 2.2.12
ICD loader Profile OpenCL 2.2
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02-03-2019, 12:53 PM
(This post was last modified: 02-03-2019, 12:55 PM by Miksch.)
Hi there ,
I'm just searching for the problem, that my NVIDIA K1200 isn't recognized by hashcat.
In my opinion it seems to be there a problem with the directory The command shows following line Code: d????????? ? ? ? ? ? gvfs
When I try to delete it I'm shown, that I'm not allowed to do this.
What could this be for a directory, how could I purge it?
TIA
Best regards
Miksch
Posts: 2,255
Threads: 16
Joined: Feb 2013
In my opinion your are completely at the wrong track.
Just look at your clinfo output, it says:
Code: Platform Vendor The pocl project
this is completely wrong. Why do you even have pocl installed?
Your installation is not correct and pocl shouldn't be installed at all.
The clinfo output must have the NVIDIA Platform Vendor mentioned and pocl of course shouldn't be there.
I would suggest to remove all the alternative drivers (the open source ones too, like mesa/pocl etc) and install the driver from nvidia.com.
Make the clinfo output looking good first, before you try hashcat. It's not a hashcat problem for sure in this case!
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Hi philsmd ,
thank you for your important hint! I'm completeley new in the theme of ocl, so I didn't mention this mistake myself. Firt time I had installed the official NVIDIA driver. With this driver hashcat worked, but gave me the hint, that it would be the wrong driver and I should have a look at www.hashcat.net/faq/wrongdriver so I uninstalled the official NVIDIA Driver and tried the way given by the faq.
Now I'm going back and try it again  .
Thanks a lot! I'm going to report about what happens.
Miksch
(02-03-2019, 01:29 PM)philsmd Wrote: In my opinion your are completely at the wrong track.
Just look at your clinfo output, it says:
Code: Platform Vendor The pocl project
this is completely wrong. Why do you even have pocl installed?
Your installation is not correct and pocl shouldn't be installed at all.
The clinfo output must have the NVIDIA Platform Vendor mentioned and pocl of course shouldn't be there.
I would suggest to remove all the alternative drivers (the open source ones too, like mesa/pocl etc) and install the driver from nvidia.com.
Make the clinfo output looking good first, before you try hashcat. It's not a hashcat problem for sure in this case!
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