topic Dear Andrey, in OpenCL* for CPU

OpenCL error clCreateContext(): CL_DEVICE_NOT_AVAILABLE

Cordella__Alessandro — Sun, 29 Mar 2020 18:25:14 GMT

I installed the latest OpenCL version (Intel® CPU Runtime for OpenCL™ Applications 18.1 for Linux* OS (64bit only)) on a Ubuntu 16 virtual machine.

I run a program (in this case Hashcat) and I get this errror:

hashcat (v5.1.0) starting...

OpenCL Platform #1: Intel(R) Corporation
========================================
* Device #1: Common KVM processor, 757/3029 MB allocatable, 2MCU

Hashes: 4 digests; 2 unique digests, 1 unique salts
Bitmaps: 16 bits, 65536 entries, 0x0000ffff mask, 262144 bytes, 5/13 rotates

Applicable optimizers:
* Zero-Byte
* Single-Salt
* Brute-Force
* Slow-Hash-SIMD-LOOP

Minimum password length supported by kernel: 8
Maximum password length supported by kernel: 63

Watchdog: Hardware monitoring interface not found on your system.
Watchdog: Temperature abort trigger disabled.

clCreateContext(): CL_DEVICE_NOT_AVAILABLE

I am using an Intel i5 3470 CPU.

What is the meaming of that error? How can I fix it?

Based on the output you

Andrey_P_Intel — Tue, 31 Mar 2020 10:53:03 GMT

Based on the output you provided, I am assuming you are running the code in full virtualization mode using QEMU, which provide a CPU-emulation layer. In this case, Intel OpenCL Runtime is unable to execute the OpenCL kernel on the "Common KVM processor", because the runtime is looking for Intel CPU.

Dear Andrey,

Ulianych__Danylo — Thu, 11 Jun 2020 21:26:06 GMT

Dear Andrey,

I get a similar issue. Where would you recommend to look for an appropriate OpenCL CPU driver for QEMU KVM, Ubuntu 18? Is it possible at all?

Thank you.

Danylo.