ETH DAG allocation error

[1337leet]

Hey guys,

I just tried to mine ETH with my system. It has got 1 HD 6990 and 2 HD 6950. I use qtminer on windows 7 64 bit, catalyst 15.7.1

Start batch:
setx GPU_MAX_ALLOC_PERCENT 95
setx GPU_USE_SYNC_OBJECTS 1

qtminer.exe -s us1.ethpool.org:3333 -u 0x17C0Bea7c449Fa27e32D4cA9569EBA3d9B605CF2.rig1 -G


It creates the DAG but then says "clCreateBuffer(-61) GPU can't allocate the DAG in a single chunk"


Anyone got an explanation for this error?

[Charloz24]

How much memory your GC have? Must be at least 2GB, the DAG file is now above 1350MB.

[1337leet]

How much memory your GC have? Must be at least 2GB, the DAG file is now above 1350MB.

The 6990 has 2x2 GB the others 2 GB.

[Charloz24]

Check ethminer --list-devices
Look at CL_DEVICE_MAX_MEM_ALLOC_SIZE

What does it said? (for both device)

[Charloz24]

How much memory your GC have? Must be at least 2GB, the DAG file is now above 1350MB.

The 6990 has 2x2 GB the others 2 GB.

For the 2GB one, I added this in the bat file:

setx GPU_SINGLE_ALLOC_PERCENT 100

[1337leet]

How much memory your GC have? Must be at least 2GB, the DAG file is now above 1350MB.

The 6990 has 2x2 GB the others 2 GB.

For the 2GB one, I added this in the bat file:

setx GPU_SINGLE_ALLOC_PERCENT 100

I did - but it doesn't work.

Someone I met told me it will only work with Catalyst 14.

But nevermind... I continue mining DCR - nearly the same profit with much less effort and problems.

[Jitmad]

I did - but it doesn't work.

Someone I met told me it will only work with Catalyst 14.

But nevermind... I continue mining DCR - nearly the same profit with much less effort and problems.

For the 2GB cards, it is better to mine DCR.