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summit mem

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This commit is contained in:
Christoph Lehner
2020-05-18 17:52:26 -04:00
parent 32fbdf4fb1
commit a7635fd5ba
6 changed files with 197 additions and 27 deletions
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39
Grid/lattice/Lattice_base.h
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@ -97,33 +97,14 @@ public:
else grid = _grid;
};
accelerator_inline void Advise(int advise) {
#ifdef GRID_NVCC
#ifndef __CUDA_ARCH__ // only on host
if (advise & AdviseInfrequentUse) {
cudaMemAdvise(_odata,_odata_size*sizeof(vobj),cudaMemAdviseSetPreferredLocation,cudaCpuDeviceId);
}
if (advise & AdviseReadMostly) {
cudaMemAdvise(_odata,_odata_size*sizeof(vobj),cudaMemAdviseSetReadMostly,-1);
}
#endif
#endif
};
accelerator_inline void AcceleratorPrefetch(int accessMode = ViewReadWrite) { // will use accessMode in future
#ifdef GRID_NVCC
#ifndef __CUDA_ARCH__ // only on host
int target;
cudaGetDevice(&target);
cudaMemPrefetchAsync(_odata,_odata_size*sizeof(vobj),target);
#endif
#endif
gridAcceleratorPrefetch(_odata,_odata_size*sizeof(vobj));
};
accelerator_inline void HostPrefetch(int accessMode = ViewReadWrite) { // will use accessMode in future
#ifdef GRID_NVCC
#ifndef __CUDA_ARCH__ // only on host
cudaMemPrefetchAsync(_odata,_odata_size*sizeof(vobj),cudaCpuDeviceId);
//cudaMemPrefetchAsync(_odata,_odata_size*sizeof(vobj),cudaCpuDeviceId);
#endif
#endif
};
@ -246,13 +227,27 @@ private:
dealloc();
this->_odata_size = size;
if ( size )
if ( size )
this->_odata = alloc.allocate(this->_odata_size);
else
this->_odata = nullptr;
}
}
public:
void Advise(int advise) {
#ifdef GRID_NVCC
#ifndef __CUDA_ARCH__ // only on host
if (advise & AdviseInfrequentUse) {
gridMoveToHost((void**)&this->_odata);
}
if (advise & AdviseReadMostly) {
//cudaMemAdvise(_odata,_odata_size*sizeof(vobj),cudaMemAdviseSetReadMostly,-1);
}
#endif
#endif
};
/////////////////////////////////////////////////////////////////////////////////
// Return a view object that may be dereferenced in site loops.
// The view is trivially copy constructible and may be copied to an accelerator device