I've been trying to figure out what I'm doing wrong with my GPU... it's an AMD A6-3420M Radeon(tm) HD Graphics. When I try and do -D 0:0 and/or -D 0:1 it say 'could not open device '0:0', ignoring. It shows my GPU as '1:' so I'm assuming I need to use the command 1:1, right?
I've seen a couple of people who've had to use 1:0 2:0 3:0 to describe their graphics cards.
Your 0:0 might be your CPU, you can squeeze a few extra hashes out of it, but the system slows right down.
I didn't seem to be able to figure out how to use the GPU at all in oclvanitygen. I did -v -D 0:0 -D 0:1 1test, -v -D 0:0 -D 1:0 1test, and a few other variations but they don't work for me. I've found some guides but I really can't figure out what I'm doi wrong. Ikv used my CPU with vanitygen64 with no issues so assumed using the GPU would be basically the same!
You should get this: (and by this I mean something similar)
Available OpenCL platforms:
0: [Advanced Micro Devices, Inc.] AMD Accelerated Parallel Processing
0: [Advanced Micro Devices, Inc.] Tahiti
1: [Advanced Micro Devices, Inc.] Tahiti
2: [AuthenticAMD] AMD A4-3300 APU with Radeon(tm) HD Graphics
Choosing just the last one I then get
oclvanitygen -D 0:2 1Boat
You should get something like this:
Compiling kernel, can take minutes...done!
Try the other ones your system lists (note, I have two graphics cards, your config may / will look slightly different)
oclvanitygen -D 0:1 1Boat
oclvanitygen -D 0:0 1Boat
If you start getting
Match idx: 1
CPU hash: c4e7297e0146329aeb8995bf723373cdfbe555dd
GPU hash: 7680ace6e2d3a96d325ca56ebe2703c930424bca
Found delta: 2237430 Start delta: 1
[275.42 Kkey/s][total 8388608][Prob 84.6%][90% in 7.0s]
Then try using the "LifeBoat" variant by Og Nasty (use the search engine above) Once you work out which cards do what, you will end up with a command like this:
oclvanitygen -f work.txt -o dump.txt -D n:n
and using a text editor such as notepad (not MS Word or Libre Open Office as they add weird stuff into their text files)
Remembering that letters such as "i", "o" and "L" and case sensitive always.
And after all that, you can step up to oclvanitygen64.exe if your system can do so.