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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