Hi!

I used to run 2x 7950 + 2x 280X in one rig(4gb ram) with thread concurrency 24000.

Now I bought 2 more 280X and placed them together with the other  280's, to use TC 8192 which gives more khash overall on that rig.

So I place my 2x 7950 in my other rig which has 16gb ram, other rig has 4gb ram.

So when I try to start cgminer it says

[2014-02-18 19:32:18] Maximum buffer memory device 0 supports says 536870912
[2014-02-18 19:32:18] Your scrypt settings come to 1572864000
[2014-02-18 19:32:18] Error -61: clCreateBuffer (padbuffer8), decrease TC or increase LG

So I tried setx GPU_MAX_ALLOC_PERCENT 100 but that doesnt help either.

Only TC that works for me now is 8192

Anyone got some ideas?

EDIT: forgot some details

Also, higher TC works in GUIminer without problem...


Sapphire radeon 7950 dualx, cg miner 3.7

"intensity" : "20",
"vectors" : "1",
"worksize" : "256",
"kernel" : "scrypt",
"lookup-gap" : "2",
"thread-concurrency" : "24000",
"shaders" : "0",
"api-port" : "4028",
"expiry" : "120",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "1",
"gpu-engine" : "1020",
"gpu-memclock" : "1225",
"gpu-powertune" : "20",