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Date: Mon, 3 Aug 2020 23:19:35 +0200
From: Luis Rocha <>
Subject: sha512crypt-opencl / Self test failed (cmp_all(1))

Hi John-Users,

When trying to run SHA512crypt on OpenCL I get the below error. Any ideas?

$ ./john
John the Ripper 1.9.0-jumbo-1+bleeding-2778d2e 2020-06-17 16:09:24 +0200
OMP [linux-gnu 64-bit x86_64 AVX2 AC]

$ ./john --list=opencl-devices
Platform #0 name: AMD Accelerated Parallel Processing, version: OpenCL 2.0
AMD-APP (2117.7)
    Device #0 (1) name:     Hawaii
    Device vendor:          Advanced Micro Devices, Inc.
    Device type:            GPU (LE)
    Device version:         OpenCL 1.2 AMD-APP (2117.7)
    Driver version:         2117.7 (VM) - Crimson
    Native vector widths:   char 4, short 2, int 1, long 1
    Preferred vector width: char 4, short 2, int 1, long 1
    Global Memory:          4024 MB
    Global Memory Cache:    16 KB
    Local Memory:           32 KB (Local)
    Constant Buffer size:   64 KB
    Max memory alloc. size: 2859 MB
    Max clock (MHz):        555
    Profiling timer res.:   1 ns
    Max Work Group Size:    256
    Parallel compute cores: 14
    Stream processors:      896  (14 x 64)
    Speed index:            497280
    SIMD width:             16
    Wavefront width:        64
    PCI device topology:    01:00.0

$ ./john ~/CMIYC2020/TESTHASHES/cmiyc-2020-pro_test_1.txt
--wordlist=/tmp/pass --rules:all --format=sha512crypt-opencl --fork=2
Using default input encoding: UTF-8
Loaded 7 password hashes with 7 different salts (sha512crypt-opencl,
crypt(3) $6$ [SHA512 OpenCL])
Cost 1 (iteration count) is 31337 for all loaded hashes
Node numbers 1-2 of 2 (fork)
Device 2: Hawaii
Device 1: Hawaii
Self test failed (cmp_all(1))
Self test failed (cmp_all(1))

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