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@ -18,9 +18,8 @@ GPU ram. If you have less system ram than your GPU has, it may not be possible |
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to mine at any reasonable rate. |
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to mine at any reasonable rate. |
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There are 5 main parameters to tuning scrypt, all of which are optional for |
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There are 5 main parameters to tuning scrypt, all of which are optional for |
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further fine tuning. When you start scrypt mining with the --scrypt option, |
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further fine tuning. When you start mining, cgminer may fail IN RANDOM WAYS. |
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cgminer will fail IN RANDOM WAYS. They are all due to parameters being outside |
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They are all due to parameters being outside what the GPU can cope with. |
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what the GPU can cope with. |
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NOTE that if it does not fail at startup, the presence of hardware errors (HW) |
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NOTE that if it does not fail at startup, the presence of hardware errors (HW) |
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are a sure sign that you have set the parameters too high. |
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are a sure sign that you have set the parameters too high. |
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@ -33,7 +32,7 @@ break scrypt mining entirely while others give poor hashrates. As for the |
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OpenCL SDK installed, for AMD it must be version 2.6 or later. |
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OpenCL SDK installed, for AMD it must be version 2.6 or later. |
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Step 1 on linux: |
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Step 1 on Linux: |
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export GPU_MAX_ALLOC_PERCENT=100 |
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export GPU_MAX_ALLOC_PERCENT=100 |
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If you do not do this, you may find it impossible to scrypt mine. You may find |
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If you do not do this, you may find it impossible to scrypt mine. You may find |
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a value of 40 is enough and increasing this further has little effect. |
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a value of 40 is enough and increasing this further has little effect. |
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@ -52,7 +51,8 @@ Just like in bitcoin mining, scrypt mining takes an intensity, however the |
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scale goes from 0 to 20 to mimic the "Aggression" used in mtrlt's reaper. The |
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scale goes from 0 to 20 to mimic the "Aggression" used in mtrlt's reaper. The |
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reason this is crucial is that too high an intensity can actually be |
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reason this is crucial is that too high an intensity can actually be |
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disastrous with scrypt because it CAN run out of ram. High intensities |
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disastrous with scrypt because it CAN run out of ram. High intensities |
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start writing over the same ram and it is highly dependent on the GPU, but they |
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start writing over the same ram and it is highly dependent on the GPU, but |
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they |
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can start actually DECREASING your hashrate, or even worse, start producing |
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can start actually DECREASING your hashrate, or even worse, start producing |
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garbage with HW errors skyrocketing. Note that if you do NOT specify an |
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garbage with HW errors skyrocketing. Note that if you do NOT specify an |
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intensity, cgminer uses dynamic mode which is designed to minimise the harm |
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intensity, cgminer uses dynamic mode which is designed to minimise the harm |
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