generateA.inl

Go to the documentation of this file.

#include <solvers/kernels/generateA.h>


template <>
void DirectForcingSolver  <device_memory>::generateA(real alpha)
{
    int nx = domInfo->nx,
        ny = domInfo->ny;

    int ASize = 5*( (nx-1)*ny + nx*(ny-1) ) - 4*(nx+ny) + 4,
        numUV = (nx-1)*ny + nx*(ny-1);

    A.resize(numUV, numUV, ASize);

    int *LRows = thrust::raw_pointer_cast(&(L.row_indices[0])),
        *LCols = thrust::raw_pointer_cast(&(L.column_indices[0])),
        *ARows = thrust::raw_pointer_cast(&(A.row_indices[0])),
        *ACols = thrust::raw_pointer_cast(&(A.column_indices[0])),
        *tags_r = thrust::raw_pointer_cast(&(tagsD[0]));

    real *MVals = thrust::raw_pointer_cast(&(M.values[0])),
         *LVals = thrust::raw_pointer_cast(&(L.values[0])),
         *AVals = thrust::raw_pointer_cast(&(A.values[0]));

    const int blockSize = 256,
              gridSize  = 1000;
    dim3 dimGrid(gridSize, 1);
    dim3 dimBlock(blockSize, 1);

    kernels::generateADirectForcing <<<dimGrid, dimBlock>>> (ARows, ACols, AVals, MVals, LRows, LCols, LVals, ASize, alpha, tags_r);
} // generateA