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Date: Fri, 19 Jun 2015 00:27:15 -0500
From: Jerry Kemp <sec-acct.14@...x.us>
To: john-users@...ts.openwall.com
Subject: OpenCL noob hardware question
I have recently acquired an Apple mini and was surprised to see that it has an
OpenCL compatible GPU.
I realize that there is one device, and non-expandable as it sits, but I am
curious as to what the meaning of the
40 Parallel compute cores.
This box is running OS X 10.10 and I am running John 1.8.0 Jumbo. OpenCL
output below.
Thank you for any comments.
Jerry
......................................................................
mini14 /usr/local/src/j/j3/run 224 # ./john --list=opencl-devices
Platform #0 name: Apple
Platform version: OpenCL 1.2 (Sep 20 2014 22:01:02)
Device #0 (0) name: Intel(R) Core(TM) i7-4578U CPU @ 3.00GHz
Device vendor: Intel
Device type: CPU (LE)
Device version: OpenCL 1.2
Driver version: 1.1
Native vector widths: char 16, short 8, int 4, long 2
Preferred vector width: char 16, short 8, int 4, long 2
Global Memory: 16.0 GB
Global Memory Cache: 64.0 B
Local Memory: 32.0 KB (Global)
Max memory alloc. size: 4.0 GB
Max clock (MHz): 4294970296
Profiling timer res.: 1 ns
Max Work Group Size: 1024
Parallel compute cores: 4
Device #1 (1) name: Iris
Device vendor: Intel
Device type: GPU (LE)
Device version: OpenCL 1.2
Driver version: 1.2(Sep 25 2014 22:25:51)
Native vector widths: char 1, short 1, int 1, long 1
Preferred vector width: char 1, short 1, int 1, long 1
Global Memory: 1.0 GB
Local Memory: 64.0 KB (Local)
Max memory alloc. size: 384.3 MB
Max clock (MHz): 1200
Profiling timer res.: 80 ns
Max Work Group Size: 512
Parallel compute cores: 40
mini14 /usr/local/src/j/j3/run 225 #
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