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Added multi-GPU reductions. Tested to work with 1-2 GPUs with power of two grid dimensions. Requires more testing in special cases (when using exotic grid dimensions and a large number of GPUs)

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jpekkila
2019-06-17 14:45:41 +03:00
parent 0ce689dbe4
commit 59086b3e79
5 changed files with 385 additions and 31 deletions
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10
src/core/device.cuh
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@@ -51,10 +51,16 @@ AcResult boundcondStep(const Device device, const StreamType stream_type,
const int3& start, const int3& end);
/** */
AcResult reduceScal(const Device device);
AcResult reduceScal(const Device device, const StreamType stream_type, const ReductionType rtype,
const VertexBufferHandle vtxbuf_handle, AcReal* result);
/** */
AcResult reduceVec(const Device device);
AcResult reduceVec(const Device device, const StreamType stream_type,
const ReductionType rtype,
const VertexBufferHandle vec0,
const VertexBufferHandle vec1,
const VertexBufferHandle vec2,
AcReal* result);
/** */
AcResult rkStep(const Device device, const StreamType stream_type, const int step_number,