Strange GPU usage

[tim127]

So today I started mining bitcoins, but after I leave it running for a few minutes the GPU usage drops to between %2 and %6, as opposed to the normal %94 - %96. When this happens I go from getting around 53 Mhash/s to 690 Khash/s. Im using a GTX 650 ti boost overclocked to 1228 mhz, and GUIMiner to do the mining. Does anyone know what i can do to fix this?

[DjPxH]

Can you post your config file?

Maybe your --temp-cutoff setting is too low?

[tim127]

This is my current config file

Code:

{
    "profiles": [
        {
            "username": "email", 
            "balance_auth_token": "", 
            "name": "opencl", 
            "hostname": "pit.deepbit.net", 
            "external_path": "C:\\Users\\Tim\\Downloads\\guiminer\\miners\\puddinpop\\rpcminer-cuda.exe", 
            "affinity_mask": 1, 
            "flags": "-v -w 128 -f 200", 
            "autostart": false, 
            "device": 0, 
            "password": "password", 
            "port": "8332"
        }
    ], 
    "bitcoin_executable": "C:\\Program Files (x86)\\Bitcoin\\bitcoin-qt.exe", 
    "show_console": false, 
    "show_summary": false, 
    "show_opencl_warning": true, 
    "console_max_lines": 5000, 
    "start_minimized": false, 
    "blockchain_directory": "C:\\Users\\Tim\\AppData\\Roaming\\Bitcoin", 
    "window_position": [
        -1032, 
        274, 
        435, 
        311
    ]
}

[Kloks]

I had the same problem with CGminer and Radeon cards.

Increasing of gpu-powertune to 20 helped me.

[paisithk]

I had this problem when the card were running hot.
















                 


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[Singulari]

It could also be a problem with the pool not giving your card enough work too.

That could also be related to a network problem like an intermittent internet connection.

[tim127]

Well my card only hits 38c at the most while Im mining, and I dont think powertune is relevant because its an nvidia card(I think...?)

[Singulari]

Well my card only hits 38c at the most while Im mining, and I dont think powertune is relevant because its an nvidia card(I think...?)

Try pinging the pool from the machine that you are running the miner on and see if you have any loss.

[tim127]

I pinged deepbit.net and there was a 0% packet loss, but I did start mining with the console open and this is what I got:

Code:

2013-12-18 21:15:08: Running command: poclbm.exe username_1:password@pit.deepbit.net:8332 --device=0 --platform=0 --verbose -r1 -v -w 128 -f 200
2013-12-18 21:15:08: Listener for "opencl" started
2013-12-18 21:15:09: Listener for "opencl": WARNING: ADL missing (no AMD platform?), temperature control is disabled
2013-12-18 21:15:09: Listener for "opencl": pit.deepbit.net:8332 18/12/2013 21:15:09, checking for stratum...
2013-12-18 21:15:09: Listener for "opencl": pit.deepbit.net:8332 18/12/2013 21:15:09, started OpenCL miner on platform 0, device 0 (GeForce GTX 650 Ti BOOST)
2013-12-18 21:15:10: Listener for "opencl": pit.deepbit.net:8332 18/12/2013 21:15:10, using JSON-RPC (no stratum header)
2013-12-18 21:17:41: Listener for "opencl": pit.deepbit.net:8332 18/12/2013 21:17:41, long poll: new block 0000000054e4f53e

The last line after I started it was:

Code:

2013-12-18 21:15:10: Listener for "opencl": pit.deepbit.net:8332 18/12/2013 21:15:10, using JSON-RPC (no stratum header)

and it was running fine, but when it stopped I got the last line

[Singulari]

Why don't you try to mine using stratum. That could be part of the problem.

AFAIK that error you saw is just a statement saying that it doesn't see a stratum server so it is going to use JSON-RPC as a way to get work.

[tim127]

Alright, the only thing is Im really new to this so Im not sure how i would use stratum.