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| author | Doug Johnson <dougvj@dougvj.net> | 2017-12-30 23:59:03 -0700 |
|---|---|---|
| committer | Doug Johnson <dougvj@gmail.com> | 2017-12-31 00:14:02 -0700 |
| commit | 0c845b3569f0a2c9524f98d4ca9b6866288fe3d0 (patch) | |
| tree | a6384988e174183ac73ed5f5cd558766b219e0c1 /xmrstak | |
| parent | 7584ea8e7a4d4796553c2ddfd615bf96e5c030a8 (diff) | |
| download | xmr-stak-0c845b3569f0a2c9524f98d4ca9b6866288fe3d0.zip xmr-stak-0c845b3569f0a2c9524f98d4ca9b6866288fe3d0.tar.gz | |
Add warning and fallback when auto intensity is 0
Occassionally the auto adjust doesn't find enough memory and the
intensity is detected too low and aligned to 0 with the compute units.
This patch fixes this situation by issuing a warning with a suggestion
to set environment vars and then ignoring the alignment to 0
Per several issues:
Principally:
https://github.com/fireice-uk/xmr-stak/issues/81
Related:
https://github.com/fireice-uk/xmr-stak/issues/490
https://github.com/fireice-uk/xmr-stak/issues/472
Diffstat (limited to 'xmrstak')
| -rw-r--r-- | xmrstak/backend/amd/autoAdjust.hpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/xmrstak/backend/amd/autoAdjust.hpp b/xmrstak/backend/amd/autoAdjust.hpp index 0bc5239..4673613 100644 --- a/xmrstak/backend/amd/autoAdjust.hpp +++ b/xmrstak/backend/amd/autoAdjust.hpp @@ -118,6 +118,19 @@ private: size_t possibleIntensity = std::min( maxThreads , maxIntensity ); // map intensity to a multiple of the compute unit count, 8 is the number of threads per work group size_t intensity = (possibleIntensity / (8 * ctx.computeUnits)) * ctx.computeUnits * 8; + //If the intensity is 0, then it's because the multiple of the unit count is greater than intensity + if (intensity == 0) { + /* See Issues: + * https://github.com/fireice-uk/xmr-stak/issues/81 + * https://github.com/fireice-uk/xmr-stak/issues/472 + * https://github.com/fireice-uk/xmr-stak/issues/490 + * Note that it appears that Northern Islands GPUs (HD 6XXX) are unaffected by + * these environment variables, according to my testing (dougvj) + */ + printer::inst()->print_msg(L0, "WARNING: Autodetected intensity unexpectedly low. Try setting GPU_SINGLE_ALLOC_PERCENT and etc."); + intensity = possibleIntensity; + + } conf += std::string(" // gpu: ") + ctx.name + " memory:" + std::to_string(availableMem / byteToMiB) + "\n"; conf += std::string(" // compute units: ") + std::to_string(ctx.computeUnits) + "\n"; // set 8 threads per block (this is a good value for the most gpus) |
