Posts: 2
Threads: 1
Joined: Jan 2020
Hi folks,
I'm struggling a bit with running hashcat on VPS with KVM in CPU only mode.
I installed opencl from Intel and here are some major command's output:
clinfo:
Code: Number of platforms 2
Platform Name Intel(R) OpenCL
Platform Vendor Intel(R) Corporation
Platform Version OpenCL 1.2 LINUX
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd 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_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_intel_exec_by_local_thread cl_khr_spir cl_intel_vec_len_hint
Platform Extensions function suffix INTEL
Platform Name Clover
Platform Vendor Mesa
Platform Version OpenCL 1.1 Mesa 13.0.6
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd
Platform Extensions function suffix MESA
Platform Name Intel(R) OpenCL
Number of devices 1
Device Name Common KVM processor
Device Vendor Intel(R) Corporation
Device Vendor ID 0x8086
Device Version OpenCL 1.2 (Build 37)
Driver Version 1.2.0.37
Device OpenCL C Version OpenCL C 1.2
Device Type CPU
Device Profile FULL_PROFILE
Max compute units 2
Max clock frequency 0MHz
Device Partition (core)
Max number of sub-devices 2
Supported partition types by counts, equally, by names (Intel)
Max work item dimensions 3
Max work item sizes 8192x8192x8192
Max work group size 8192
Preferred work group size multiple <getWGsizes:494: create context : error -2>
Preferred / native vector sizes
char 1 / 16
short 1 / 8
int 1 / 4
long 1 / 2
half 0 / 0 (n/a)
float 1 / 4
double 0 / 0 (n/a)
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 No
Round to infinity No
IEEE754-2008 fused multiply-add No
Support is emulated in software No
Correctly-rounded divide and sqrt operations No
Double-precision Floating-point support (n/a)
Address bits 64, Little-Endian
Global memory size 2101669888 (1.957GiB)
Error Correction support No
Max memory allocation 525417472 (501.1MiB)
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 524288
Global Memory cache line 64 bytes
Image support Yes
Max number of samplers per kernel 480
Max size for 1D images from buffer 32838592 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 480
Max number of write image args 480
Local memory type Global
Local memory size 32768 (32KiB)
Max constant buffer size 131072 (128KiB)
Max number of constant args 480
Max size of kernel argument 3840 (3.75KiB)
Queue properties
Out-of-order execution Yes
Profiling Yes
Local thread execution (Intel) Yes
Prefer user sync for interop No
Profiling timer resolution 1ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels Yes
SPIR versions 1.2
printf() buffer size 1048576 (1024KiB)
Built-in kernels
Device Available Yes
Compiler Available Yes
Linker Available Yes
Device Extensions cl_khr_icd 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_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_intel_exec_by_local_thread cl_khr_spir cl_intel_vec_len_hint
Platform Name Clover
Number of devices 0
NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) Intel(R) OpenCL
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) Success [INTEL]
clCreateContext(NULL, ...) [default] <checkNullCtx:2241: create context with device from default platform : error -2>
clCreateContext(NULL, ...) [other] <error: no devices in non-default plaforms>
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices available in platform
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) No devices available in platform
ICD loader properties
ICD loader Name OpenCL ICD Loader
ICD loader Vendor OCL Icd free software
ICD loader Version 2.2.11
ICD loader Profile OpenCL 2.1
lscpu:
Code: Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 2
On-line CPU(s) list: 0,1
Thread(s) per core: 1
Core(s) per socket: 2
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 15
Model: 6
Model name: Common KVM processor
Stepping: 1
CPU MHz: 2599.998
BogoMIPS: 5199.99
Hypervisor vendor: KVM
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 4096K
L3 cache: 16384K
NUMA node0 CPU(s): 0,1
hashcat -I
Code: hashcat (v3.30) starting...
clGetDeviceIDs(): CL_DEVICE_NOT_FOUND
OpenCL Info:
Platform ID #1
Vendor : Intel(R) Corporation
Name : Intel(R) OpenCL
Version : OpenCL 1.2 LINUX
Device ID #1
Type : CPU
Vendor ID : 8
Vendor : Intel(R) Corporation
Name : Common KVM processor
Version : OpenCL 1.2 (Build 37)
Processor(s) : 2
Clock : 0
Memory : 501/2004 MB allocatable
OpenCL Version : OpenCL C 1.2
Driver Version : 1.2.0.37
Platform ID #2
Vendor : Mesa
Name : Clover
Version : OpenCL 1.1 Mesa 13.0.6
Note, that I also tried HC 4 and 5 but none of this seemed to work.
I tried running a benchmark like this:
Code: nism0@smoke:~$ hashcat -b -D1
hashcat (v3.30) starting in benchmark mode...
clGetDeviceIDs(): CL_DEVICE_NOT_FOUND
OpenCL Platform #1: Intel(R) Corporation
========================================
* Device #1: Common KVM processor, 501/2004 MB allocatable, 2MCU
OpenCL Platform #2: Mesa, skipped or no OpenCL compatible devices found
Hashtype: MD4
clCreateContext(): CL_UNKNOWN_ERROR
Started: Mon Jan 13 14:53:03 2020
Stopped: Mon Jan 13 14:53:04 2020
nism0@smoke:~$
Any help would be apprecieated.
Posts: 34
Threads: 3
Joined: Dec 2019
01-13-2020, 04:31 PM
(This post was last modified: 01-13-2020, 05:54 PM by undeath.)
undeath edit: removed completely useless and excessive quote
I have to add "--force" on mine to get it to run on Intel at all... but I don't have hc 3.3 to test with I'm afraid.
Posts: 2
Threads: 1
Joined: Jan 2020
--force does not work either...
Posts: 2,136
Threads: 15
Joined: Feb 2013
01-13-2020, 04:49 PM
(This post was last modified: 01-13-2020, 04:49 PM by philsmd.)
Why would you even think about using these old versions of hashcat ?
Do not use --force
uninstall all the non-vendor drivers (the open source drivers like Mesa/Pocl etc)
Try to fix the clinfo error first, clinfo clearly says it failed to use this device
Code: clCreateContext(NULL, ...) [default] <checkNullCtx:2241: create context with device from default platform : error -2>
clCreateContext failed with error code -2
even a tool as simple as clinfo failed to use your devices
What hardware do you even use ?
You should probably better test with release, or beta version from https://hashcat.net/beta), not with older versions of hashcat.
Posts: 17
Threads: 3
Joined: Nov 2017
Dear hashcat folks,
I experience a similar issue with hashcat (master branch) on CPU-only VPS. Here is my OS & CPU info:
Code: $ lsb_release -a
LSB Version: core-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 18.04.4 LTS
Release: 18.04
Codename: bionic
$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 2
On-line CPU(s) list: 0,1
Thread(s) per core: 1
Core(s) per socket: 2
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 15
Model: 6
Model name: Common KVM processor
Stepping: 1
CPU MHz: 1795.672
BogoMIPS: 3591.34
Hypervisor vendor: KVM
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 4096K
L3 cache: 16384K
NUMA node0 CPU(s): 0,1
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx lm constant_tsc nopl xtopology cpuid tsc_known_freq pni cx16 x2apic hypervisor lahf_lm cpuid_fault pti
In all three experiments below the master branch of hashcat is built and used.
1. Installing official Intel OpenCL CPU runtime (l_opencl_p_18.1.0.015) makes hashcat still complaining:
Code: $ hashcat -m2500 -b
hashcat (v5.1.0-1861-g323e7463) 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.
Kernel /usr/local/share/hashcat/OpenCL/m02500-optimized.cl:
Optimized kernel requested but not needed - falling back to pure kernel
clCreateContext(): CL_DEVICE_NOT_AVAILABLE
Started: Fri Jun 12 09:08:03 2020
Stopped: Fri Jun 12 09:08:03 2020
Hashcat hangs at this point and I CTRL+C the execution. Also, clinfo hangs as well:
Code: $ clinfo
Number of platforms 1
Platform Name Intel(R) CPU Runtime for OpenCL(TM) Applications
Platform Vendor Intel(R) Corporation
Platform Version OpenCL 2.1 LINUX
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd 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_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_intel_exec_by_local_thread cl_khr_spir cl_khr_image2d_from_buffer cl_intel_vec_len_hint
Platform Host timer resolution 1ns
Platform Extensions function suffix INTEL
Platform Name Intel(R) CPU Runtime for OpenCL(TM) Applications
Number of devices 1
Device Name Common KVM processor
Device Vendor Intel(R) Corporation
Device Vendor ID 0x8086
Device Version OpenCL 2.1 (Build 0)
Driver Version 18.1.0.0920
Device OpenCL C Version OpenCL C 2.0
Device Type CPU
Device Profile FULL_PROFILE
Device Available Yes
Compiler Available Yes
Linker Available Yes
Max compute units 2
Max clock frequency 0MHz
Device Partition (core)
Max number of sub-devices 2
Supported partition types by counts, equally, by names (Intel)
Max work item dimensions 3
Max work item sizes 8192x8192x8192
Max work group size 8192
Preferred work group size multiple <getWGsizes:671: create context : error -2>
Max sub-groups per work group 1
Preferred / native vector sizes
char 1 / 16
short 1 / 8
int 1 / 4
long 1 / 2
half 0 / 0 (n/a)
float 1 / 4
double 0 / 0 (n/a)
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 No
Round to infinity No
IEEE754-2008 fused multiply-add No
Support is emulated in software No
Correctly-rounded divide and sqrt operations No
Double-precision Floating-point support (n/a)
Address bits 64, Little-Endian
Global memory size 4136087552 (3.852GiB)
Error Correction support No
Max memory allocation 1034021888 (986.1MiB)
Unified memory for Host and Device Yes
Shared Virtual Memory (SVM) capabilities (core)
Coarse-grained buffer sharing Yes
Fine-grained buffer sharing Yes
Fine-grained system sharing Yes
Atomics Yes
Minimum alignment for any data type 128 bytes
Alignment of base address 1024 bits (128 bytes)
Preferred alignment for atomics
SVM 64 bytes
Global 64 bytes
Local 0 bytes
Max size for global variable 65536 (64KiB)
Preferred total size of global vars 65536 (64KiB)
Global Memory cache type Read/Write
Global Memory cache size 524288 (512KiB)
Global Memory cache line size 64 bytes
Image support Yes
Max number of samplers per kernel 480
Max size for 1D images from buffer 64626368 pixels
Max 1D or 2D image array size 2048 images
Base address alignment for 2D image buffers 64 bytes
Pitch alignment for 2D image buffers 64 pixels
Max 2D image size 16384x16384 pixels
Max 3D image size 2048x2048x2048 pixels
Max number of read image args 480
Max number of write image args 480
Max number of read/write image args 480
Max number of pipe args 16
Max active pipe reservations 131071
Max pipe packet size 1024
Local memory type Global
Local memory size 32768 (32KiB)
Max number of constant args 480
Max constant buffer size 131072 (128KiB)
Max size of kernel argument 3840 (3.75KiB)
Queue properties (on host)
Out-of-order execution Yes
Profiling Yes
Local thread execution (Intel) Yes
Queue properties (on device)
Out-of-order execution Yes
Profiling Yes
Preferred size 4294967295 (4GiB)
Max size 4294967295 (4GiB)
Max queues on device 4294967295
Max events on device 4294967295
Prefer user sync for interop No
Profiling timer resolution 1ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels Yes
Sub-group independent forward progress No
IL version SPIR-V_1.0
SPIR versions 1.2
printf() buffer size 1048576 (1024KiB)
Built-in kernels
Device Extensions cl_khr_icd 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_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_intel_exec_by_local_thread cl_khr_spir cl_khr_image2d_from_buffer cl_intel_vec_len_hint
NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) No platform
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) No platform
clCreateContext(NULL, ...) [default] No platform
clCreateContext(NULL, ...) [other] <checkNullCtx:2694: create context with device from non-default platform : error -2>
clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) No platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) No platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR) No platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM) No platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL) No platform
2. I tried mesa-opencl-icd driver with no luck.
Code: $ hashcat -m2500 -b
hashcat (v5.1.0-1855-g5775231c) 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.
Kernel /usr/local/share/hashcat/OpenCL/m02500-optimized.cl:
Optimized kernel requested but not needed - falling back to pure kernel
clGetDeviceIDs(): CL_DEVICE_NOT_FOUND
clGetDeviceIDs(): CL_DEVICE_NOT_FOUND
Started: Thu Jun 11 22:15:50 2020
Stopped: Thu Jun 11 22:15:50 2020
The output of clinfo:
Code: $ clinfo
Number of platforms 1
Platform Name Clover
Platform Vendor Mesa
Platform Version OpenCL 1.1 Mesa 20.0.4
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd
Platform Extensions function suffix MESA
Platform Name Clover
Number of devices 0
NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) Clover
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...)
clCreateContext(NULL, ...) [default] No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices found in platform
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) No devices found in platform
ICD loader properties
ICD loader Name OpenCL ICD Loader
ICD loader Vendor OCL Icd free software
ICD loader Version 2.2.11
ICD loader Profile OpenCL 2.1
At least, both clinfo and hashcat commands do not hang.
3. At last, I tried pocl-opencl-icd driver. But hashcat complains about an outdated driver:
Code: $ hashcat -m2500 -b
hashcat (v5.1.0-1861-g323e7463) 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.
Kernel /usr/local/share/hashcat/OpenCL/m02500-optimized.cl:
Optimized kernel requested but not needed - falling back to pure kernel
* Device #1: Outdated POCL OpenCL driver detected!
This OpenCL driver has been marked as likely to fail kernel compilation or to produce false negatives.
You can use --force to override this, but do not report related errors.
No devices found/left.
Started: Fri Jun 12 09:29:39 2020
Stopped: Fri Jun 12 09:29:39 2020
So I ran with --force flag and got the speed of
Code: Speed.#1.........: 333 H/s (86.02ms) @ Accel:128 Loops:1024 Thr:1 Vec:4
The output of clinfo is
Code: $ clinfo
Number of platforms 1
Platform Name Portable Computing Language
Platform Vendor The pocl project
Platform Version OpenCL 1.2 pocl 1.4, None+Asserts, LLVM 9.0.1, RELOC, 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-Common KVM processor
Device Vendor GenuineIntel
Device Vendor ID 0x6c636f70
Device Version OpenCL 1.2 pocl HSTR: pthread-x86_64-pc-linux-gnu-nocona
Driver Version 1.4
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 2
Max clock frequency 1795MHz
Device Partition (core)
Max number of sub-devices 2
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 8 / 8
int 4 / 4
long 2 / 2
half 0 / 0 (n/a)
float 4 / 4
double 2 / 2 (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 No
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 3102065664 (2.889GiB)
Error Correction support No
Max memory allocation 1073741824 (1024MiB)
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 16777216 (16MiB)
Global Memory cache line size 64 bytes
Image support Yes
Max number of samplers per kernel 16
Max size for 1D images from buffer 67108864 pixels
Max 1D or 2D image array size 2048 images
Max 2D image size 8192x8192 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 8388608 (8MiB)
Max number of constant args 8
Max constant buffer size 8388608 (8MiB)
Max size of kernel argument 1024
Queue properties
Out-of-order execution Yes
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-Common KVM processor
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) Success (1)
Platform Name Portable Computing Language
Device Name pthread-Common KVM processor
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-Common KVM processor
ICD loader properties
ICD loader Name OpenCL ICD Loader
ICD loader Vendor OCL Icd free software
ICD loader Version 2.2.11
ICD loader Profile OpenCL 2.1
Thank you.
Posts: 2,136
Threads: 15
Joined: Feb 2013
06-12-2020, 09:44 AM
(This post was last modified: 06-12-2020, 09:45 AM by philsmd.)
try latest beta version of hashcat from https://hashcat.net/beta/
if it's really an intel CPU, you should install the intel OpenCL runtime from: https://software.intel.com/content/www/u...pu-section
if you really want to use POCL, use the latest version. Compile it like this (after uninstalling all the other drivers and older versions of POCL):
Code: sudo apt install -y build-essential ocl-icd-libopencl1 cmake git pkg-config libclang-dev clang llvm make ninja-build ocl-icd-libopencl1 ocl-icd-dev ocl-icd-opencl-dev libhwloc-dev zlib1g zlib1g-dev clinfo dialog apt-utils
git clone https://github.com/pocl/pocl
cd pocl/
mkdir build/
cd build/
cmake ..
make
sudo make install
sudo cp pocl.icd /etc/OpenCL/vendors/
(see https://github.com/hashcat/hashcat/issue...-628732757)
Posts: 17
Threads: 3
Joined: Nov 2017
Quote: try latest beta version of hashcat from https://hashcat.net/beta/
This is equivalent to building the hashcat master branch, isn't it? Anyway, I tried it and got the same results.
Quote:if it's really an intel CPU, you should install the intel OpenCL runtime from: https://software.intel.com/content/www/u...pu-section
This is exactly what I've done. Eventually, you need to download the ' l_opencl_p_18.1.0.015' file from their website. But then even clinfo fails to recognize the driver (it hangs). But, I mean, if my CPU is not Intel, what else could it be?
Quote:if you really want to use POCL, use the latest version. Compile it like this (after uninstalling all the other drivers and older versions of POCL):
Thank you, that worked out. I get the same benchmark speed though, but at least I don't need the --force flag. In the issue you quoted you said that POCL v1.5 with LLVM 9 works as fast as Intel and may be even faster. So I guess I'll stick to POCL for a while.
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