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reduce cpu occupancy #218

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Merged
merged 1 commit into from
Aug 19, 2019
Merged

reduce cpu occupancy #218

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21 changes: 15 additions & 6 deletions solution/miner/libcuckoo/src/cuda/trimmer.cu
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Original file line number Diff line number Diff line change
Expand Up @@ -689,7 +689,7 @@ __global__ void Round2(const int round, const int part, const siphash_keys &sipk
cudaMemset (indexesE[1], 0, indexesSize);
cudaMemcpy (dipkeys, &sipkeys, sizeof (sipkeys), cudaMemcpyHostToDevice);

checkCudaErrors (cudaDeviceSynchronize ());
// checkCudaErrors (cudaDeviceSynchronize ());

#ifdef TIMER
float durationA, durationB;
Expand All @@ -706,7 +706,7 @@ __global__ void Round2(const int round, const int part, const siphash_keys &sipk
else
Cuckaroo_SeedA < EDGES_A ><<< tp.genA.blocks, tp.genA.tpb >>> (*dipkeys, (ulonglong4 *) bufferAB, (int *) indexesE[1]);

checkCudaErrors (cudaDeviceSynchronize ());
// checkCudaErrors (cudaDeviceSynchronize ());

#ifdef TIMER
cudaEventRecord (stop, NULL);
Expand Down Expand Up @@ -780,7 +780,7 @@ __global__ void Round2(const int round, const int part, const siphash_keys &sipk
Round<EDGES_A/4, EDGES_B/4><<<tp.trim.blocks, tp.trim.tpb, BITMAPBYTES>>>(3, part, *dipkeys, (uint2 *)bufferB, (uint2 *)bufferA, indexesE[1], indexesE[0]); // to .117
}

cudaDeviceSynchronize();
// cudaDeviceSynchronize();

for (int round = 4; round < tp.ntrims; round += 2) {
cudaMemset(indexesE[1], 0, indexesSize);
Expand All @@ -797,9 +797,18 @@ __global__ void Round2(const int round, const int part, const siphash_keys &sipk
cudaDeviceSynchronize();

Tail<EDGES_B/4><<<tp.tail.blocks, tp.tail.tpb>>>((const uint2 *)bufferA, (uint2 *)bufferB, (const u32 *)indexesE[0], (u32 *)indexesE[1]);
cudaMemcpy(&nedges, indexesE[1], sizeof(u32), cudaMemcpyDeviceToHost);
cudaDeviceSynchronize();
return nedges;
// cudaMemcpy(&nedges, indexesE[1], sizeof(u32), cudaMemcpyDeviceToHost);
// cudaDeviceSynchronize();
bool ready = false;
while(1){
usleep(1000);
ready = cudaSuccess == cudaStreamQuery(0);
if(ready){
cudaMemcpy(&nedges, indexesE[1], sizeof(u32), cudaMemcpyDeviceToHost);
break;
}
}
return nedges;
}

};