GPU can't allocate the DAG in a single chunk. Bailing?

Question

I decided to do solo GPU mining and set everything up (probably). Synced the blockchain, ran the Genoil 1.0.7 beta of ethminer on Windows. But I keep receiving this error:

Creating one big buffer for the DAG Allocating/mapping single buffer failed with: >clCreateBuffer(-61). GPU can't allocate the DAG in a single >chunk.Bailing. clEnqueueWriteBuffer(-38)

I used

export GPU_FORCE_64BIT_PTR=0 export GPU_MAX_HEAP_SIZE=100 export GPU_USE_SYNC_OBJECTS=1 export GPU_MAX_ALLOC_PERCENT=100

but to no avail. I am using Intel HD 4000 which has about 1.7/1.8 GB I guess. I reckon my Nvidia GT 620M is not enough. I am using Win 8.1 64bit. Any help please?

FYI: Where do I see the current DAG size? – Franck Dernoncourt May 23 '17 at 21:44 — Franck Dernoncourt, May 23 '17 at 21:44

score 5 · Accepted Answer · edited Jul 04 '16 at 11:22

5

I'm pretty sure you can't mine on an Intel integrated graphics. Also yes, you are correct your GPU has not enough memory to load the entire DAG file.

edited Jul 04 '16 at 11:22

techraf

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answered Apr 17 '16 at 22:08

Jeth

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score 4 · Answer 2 · edited Jun 02 '16 at 06:23

4

Try

ethminer.exe -G --list-devices

It will list openCL compatible devices.

You have to check that both MEMORY and MAX_ALLOC sizes are bigger than the current DAG (a bit more than 1.4 Gb at the moment).

On an Intel card it wouldn't surprise me that the MAX_ALLOC is too low even if the memory is ok.

A nice alternative is Goldminer which will automatically detect the issue if any and tell you how to solve it. Plus it has a GUI. And rebuilds DAG / restarts mining automatically.

edited Jun 02 '16 at 06:23

Stephen Thiel

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answered Jun 01 '16 at 20:30

Stephen Thiel

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"how to solve it." -> does this mean we can mine with a GPU of memory X GB when X is below DAG size? – Franck Dernoncourt May 23 '17 at 21:50

score 2 · Answer 3 · answered Dec 29 '16 at 22:36

I have fixed DAG error with completely uninstall AMD Drivers and installation of 14.1beta custom setup - Display Driver only. The newer 14.12 also didn't work. So if you install good AMD display driver and nothing else (Control centers, etc.) - everything must work like it should.

GPU can't allocate the DAG in a single chunk. Bailing?

3 Answers3