Jacobi #641
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Jacobi #641
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This PR merges Jacobi kernel code, which can be found at
software/spmd/bsg_cuda_lite_runtime/jacobi/Jacobi 3D takes an input of
Nx * Ny * Nz. This implementation is unrolled alongNx, and distributesNyandNzalongtileXandtileYrespectively. So the minimal valid input is64 * 18 * 10. Another valid input is126 * 18 *10. Note there alongNxit reads 64 inputs and generates 62 outputs. There is overlapping between steps.