I decided to share my BAMT setup for GRS mining. For those, who don't know, BAMT is a very simle plug'n'play Linux distribution which is tailored to do only one thing: mine Scrypt coins. It also boots from 4GB+ flash drive, so you don't need to do any setup, just boot and mine. See
https://litecointalk.org/index.php?topic=2924.0Somehow, I could not get my R9 290 to perform as good in Windows 7. I tried 13.11 and 13.12 drivers. It could only achieve 8.5MHS. With BAMT I go as far as 9.8MHS.
Tested on BAMT 1.3 with Sapphire R9 290 TriX and Gigabyte R9 270X.
Here are the steps:
0. Download precompiled sph-sgminer from
https://mega.co.nz/#!5F5kFLAR!tTDIYnsIL4NyBhe4A7nK63S9FREhCkmkSpsih64pIRM.
1. Bamt control \ stop mining sessions.
2. Accessories \ File Manager, browse to /opt/miners/ folder.
3. Rename existing "cgminer" folder to cgminerscrypt.
4. Copy contents of my ZIP file to "cgminer" folder.
5. Step inside the cgminer folder, locate "cgminer" file, right click it.
6. Switch to "Permissions" tab and turn on "Make the file executable".
7. Now go to /etc/bamt/ folder.
8. Backup your existing cgminer.conf to cgminerscrypt.conf.
9. Make cgminer.conf similar to something like this (Use recommended settings for your card, see
https://docs.google.com/spreadsheet/ccc?key=0Atmcd1XbwbURdFVhT0w5RXdvcUdKdXVQVUt1blZZSHc#gid=0, this config is for "R9 270X, R9 290, R9 290"):
{
"pools" : [
{
"url" : "stratum+tcp://erebor.dwarfpool.com:3345",
"user" : "YourWalletHere",
"pass" : "p"
},
{
"url" : "stratum+tcp://grs.cpu-pool.net:3650",
"user" : "YourLogin",
"pass" : "YourPass"
},
{
"url" : "192.168.1.7:1441",
"user" : "u",
"pass" : "p"
}
],
"gpu-engine" : "1225,1205,1205",
"gpu-memclock" : "1075,150,150",
"xintensity" : "512",
"thread-concurrency" : "21568,32767,32767",
"gpu-threads" : "1",
"auto-fan" : true,
"temp-cutoff" : "85,95,95",
"temp-overheat" : "80,90,90",
"temp-target" : "72,80,80",
"gpu-fan" : "25-80",
"worksize" : "256",
"api-port" : "4028",
"kernel" : "groestlcoin",
"gpu-powertune" : "20",
"scan-time": "1",
"expiry" : "5",
"queue" : "16"
}
10. Finally, do Bamt control \ start mining sessions.
Note: sph-sgminer webpage
https://bitcointalksearch.org/topic/ann-sph-sgminer-multi-coin-multi-algorithm-gpu-miner-added-marucoin-475795 recommends 4 threads, but somehow this results in dropping hash rate in approx 10 minutes. This happens only in Linux, in Windows it's all ok with 4 threads. So if you have similar problems, try 1 thread.
PS: Use the lowest possible RAM frequency (which is 150Mhz for my R9 290 and 1075 for my R9 270X), high memory frequencies are not needed for GROESTL.
Update: BAMT 1.6.2 is now available. However, it includes sph-sgminer that cannot do Groestl.
So you still need to patch it.
Easiest is just to follow the steps above. Or you can just update sphsgminer in bamt. In this case, rename the executable from my zip from cgminer to sgminer and make appropriate changes to bamt.conf.
