void RemoteCUDARunner::AllocateResources(const int numb, const int numt)
{
DeallocateResources();
m_in=(remote_cuda_in *)malloc(sizeof(remote_cuda_in));
m_out=(remote_cuda_out *)malloc(numb*numt*sizeof(remote_cuda_out));
m_metahash=(unsigned char *)malloc(numb*numt*GetStepIterations());
cutilSafeCall(cudaMalloc((void **)&m_devin,sizeof(remote_cuda_in)));
cutilSafeCall(cudaMalloc((void **)&m_devout,numb*numt*sizeof(remote_cuda_out)));
cutilSafeCall(cudaMalloc((void **)&m_devmetahash,numb*numt*GetStepIterations()));
std::cout << "Done allocating CUDA resources for (" << numb << "," << numt << ")" << std::endl;
}
const unsigned long CUDARunner::RunStep()
{
unsigned int best=0;
unsigned int bestg=~0;
if(m_in==0 || m_out==0 || m_devin==0 || m_devout==0)
{
AllocateResources(m_numb,m_numt);
}
cutilSafeCall(cudaMemcpy(m_devin,m_in,sizeof(cuda_in),cudaMemcpyHostToDevice));
cuda_process_helper(m_devin,m_devout,GetStepIterations(),GetStepBitShift(),m_numb,m_numt);
cutilSafeCall(cudaMemcpy(m_out,m_devout,m_numb*m_numt*sizeof(cuda_out),cudaMemcpyDeviceToHost));
for(int i=0; i<m_numb*m_numt; i++)
{
if(m_out[i].m_bestnonce!=0 && m_out[i].m_bestg<bestg)
{
best=m_out[i].m_bestnonce;
bestg=m_out[i].m_bestg;
}
}
return CryptoPP::ByteReverse(best);
}
const unsigned long CUDARunner::RunStep()
{
//unsigned int best=0;
//unsigned int bestg=~0;
int offset=0;
if(m_in==0 || m_out==0 || m_devin==0 || m_devout==0)
{
AllocateResources(m_numb,m_numt);
}
m_out[0].m_bestnonce=0;
cuMemcpyHtoD(m_devout,m_out,/*m_numb*m_numt*/sizeof(cuda_out));
cuMemcpyHtoD(m_devin,m_in,sizeof(cuda_in));
int loops=GetStepIterations();
int bits=GetStepBitShift()-1;
void *ptr=(void *)(size_t)m_devin;
ALIGN_UP(offset, __alignof(ptr));
cuParamSetv(m_function,offset,&ptr,sizeof(ptr));
offset+=sizeof(ptr);
ptr=(void *)(size_t)m_devout;
ALIGN_UP(offset, __alignof(ptr));
cuParamSetv(m_function,offset,&ptr,sizeof(ptr));
offset+=sizeof(ptr);
ALIGN_UP(offset, __alignof(loops));
cuParamSeti(m_function,offset,loops);
offset+=sizeof(loops);
ALIGN_UP(offset, __alignof(bits));
cuParamSeti(m_function,offset,bits);
offset+=sizeof(bits);
cuParamSetSize(m_function,offset);
cuFuncSetBlockShape(m_function,m_numt,1,1);
cuLaunchGrid(m_function,m_numb,1);
cuMemcpyDtoH(m_out,m_devout,/*m_numb*m_numt*/sizeof(cuda_out));
// very unlikely that we will find more than 1 hash with H=0
// so we'll just return the first one and not even worry about G
for(int i=0; i<1/*m_numb*m_numt*/; i++)
{
if(m_out[i].m_bestnonce!=0)// && m_out[i].m_bestg<bestg)
{
return CryptoPP::ByteReverse(m_out[i].m_bestnonce);
//best=m_out[i].m_bestnonce;
//bestg=m_out[i].m_bestg;
}
}
return 0;
}
const unsigned long RemoteCUDARunner::RunStep()
{
if(m_in==0 || m_out==0 || m_devin==0 || m_devout==0)
{
AllocateResources(m_numb,m_numt);
}
cutilSafeCall(cudaMemcpy(m_devin,m_in,sizeof(remote_cuda_in),cudaMemcpyHostToDevice));
remote_cuda_process_helper(m_devin,m_devout,m_devmetahash,GetStepIterations(),GetStepBitShift(),m_numb,m_numt);
cutilSafeCall(cudaMemcpy(m_out,m_devout,m_numb*m_numt*sizeof(remote_cuda_out),cudaMemcpyDeviceToHost));
cutilSafeCall(cudaMemcpy(m_metahash,m_devmetahash,m_numb*m_numt*GetStepIterations(),cudaMemcpyDeviceToHost));
return 0;
}