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Refactoring flux bC for use with cooperative groups

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James E McClure
2018-02-20 21:31:37 -05:00
parent 030f997516
commit 73a2347bef
1 changed files with 18 additions and 6 deletions
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24
gpu/D3Q19.cu
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@@ -1960,9 +1960,15 @@ __global__ void dvc_ScaLBL_D3Q19_AAeven_Flux_BC_z(int *list, double *dist, doub
sum = factor*(f0+f1+f2+f3+f4+f7+f8+f9+f10 + 2*(f6+f12+f13+f16+f17));
}
sum = blockReduceSum(sum);
if (threadIdx.x==0)
atomicAdd(dvcsum, sum);
//sum = blockReduceSum(sum);
//if (threadIdx.x==0)
// atomicAdd(dvcsum, sum);
extern __shared__ double temp[];
thread_group g = this_thread_block();
double block_sum = reduce_sum(g, temp, sum);
if (g.thread_rank() == 0) atomicAdd(dvcsum, block_sum);
}
@@ -2029,9 +2035,15 @@ __global__ void dvc_ScaLBL_D3Q19_AAodd_Flux_BC_z(int *d_neighborList, int *list
}
sum = blockReduceSum(sum);
if (threadIdx.x==0)
atomicAdd(dvcsum, sum);
//sum = blockReduceSum(sum);
//if (threadIdx.x==0)
// atomicAdd(dvcsum, sum);
extern __shared__ double temp[];
thread_group g = this_thread_block();
double block_sum = reduce_sum(g, temp, sum);
if (g.thread_rank() == 0) atomicAdd(dvcsum, block_sum);
}