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Message-Id: <16d5ad199f3.1175afe6a223028.5423449800807709697@loudiron.com>
Date: Mon, 23 Sep 2019 00:12:28 +0300
From: Xosted <xosted@...diron.com>
To: "john-users" <john-users@...ts.openwall.com>
Subject: John doesn't detect my second graphics card
Hello,
I have installed John on a AMD box running Ubuntu 18.10 and configured it to use OpenCL.
All this works fine.
I added a second graphics card to the system by plugging it in. It is detected by the system as shown here:
lspci -k | grep VGA
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Baffin [Radeon RX 460/560D / Pro 450/455/460/555/560] (rev cf)
06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X] (rev e7)
However John doesn't seem to see it:
./john --list=opencl-devices
Platform #0 name: AMD Accelerated Parallel Processing, version: OpenCL 2.1 AMD-APP (2766.4)
Device #0 (1) name: Baffin
Board name: AMD Radeon (TM) RX 460 Graphics
Device vendor: Advanced Micro Devices, Inc.
Device type: GPU (LE)
Device version: OpenCL 1.2 AMD-APP (2766.4)
Driver version: 2766.4 - AMDGPU-Pro
Native vector widths: char 4, short 2, int 1, long 1
Preferred vector width: char 4, short 2, int 1, long 1
Global Memory: 843 MB
Global Memory Cache: 16 KB
Local Memory: 32 KB (Local)
Constant Buffer size: 616 MB
Max memory alloc. size: 616 MB
Max clock (MHz): 1224
Profiling timer res.: 1 ns
Max Work Group Size: 256
Parallel compute cores: 14
Stream processors: 896 (14 x 64)
Speed index: 1096704
SIMD width: 16
Wavefront width: 64
PCI device topology: 01:00.0
Platform #1 name: Portable Computing Language, version: OpenCL 1.2 pocl 1.1 None+Asserts, LLVM 6.0.0, SPIR, SLEEF, DISTRO, POCL_DEBUG
Device #0 (2) name: pthread-AMD FX-8370E Eight-Core Processor
Device vendor: AuthenticAMD
Device type: CPU (LE)
Device version: OpenCL 1.2 pocl HSTR: pthread-x86_64-pc-linux-gnu-bdver1
Driver version: 1.1
Native vector widths: char 16, short 16, int 8, long 4
Preferred vector width: char 16, short 16, int 8, long 4
Global Memory: 30019 MB
Global Memory Cache: 2 MB
Local Memory: 1 MB (Global)
Constant Buffer size: 1 MB
Max memory alloc. size: 8 GB
Max clock (MHz): 2135
Profiling timer res.: 1 ns
Max Work Group Size: 4096
Parallel compute cores: 8
Speed index: 68320
What could be the reason? I tried recompiling John but it did not fix it.
Additionally, I have a long time running task which I have used a session for. Will I be able to restore the session for it to use both devices? Will I be forced to restart from scratch?
Regards
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