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|
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <sys/types.h>
#include <sys/time.h>
#include "../gpu.h"
#include "../gpu-complex.h"
#undef BLOCK_X
#undef BLOCK_Y
#define BLOCK_X GPU_DEFAULT_BLOCK_X
#define BLOCK_Y GPU_DEFAULT_BLOCK_Y
#ifdef MYJ
#define ACACHE_X (BLOCK_X + 2 * MYJ)
#define ACACHE_Y (BLOCK_Y + 2 * MYJ)
__global__ void RELAX_kernel(
const int relax_method, const double coef_relax,
const int ncoefs, const double *c_coefs,
const long *c_offsets,
const double *c_coefs0,
const double *c_coefs1,
const double *c_coefs2,
const double* a, double* b,
const double* src,const long3 c_n,
const int3 a_size, const int3 b_size,
const double w, const int xdiv)
{
int i1tid = threadIdx.y;
int i2tid = threadIdx.x;
int i1, i2;
int xlen;
double acache0[MYJ];
double acache0t[MYJ + 1];
double *acache12p;
__shared__ double s_coefs0[MYJ * 2 + 1];
__shared__ double s_coefs1[MYJ * 2];
__shared__ double s_coefs2[MYJ * 2];
__shared__ double acache12[ACACHE_X * ACACHE_Y];
{
int xx = gridDim.x / xdiv;
int xind = blockIdx.x / xx;
i2 = (blockIdx.x - xind * xx) * BLOCK_X + i2tid;
i1 = blockIdx.y * BLOCK_Y + i1tid;
xlen = (c_n.x + xdiv - 1) / xdiv;
int xstart = xind * xlen;
if ((c_n.x - xstart) < xlen)
xlen = c_n.x - xstart;
a += xstart * a_size.y + i1 * a_size.z + i2;
b += xstart * b_size.y + i1 * b_size.z + i2;
src += xstart * b_size.y + i1 * b_size.z + i2;
}
acache12p = acache12 + ACACHE_X * (i1tid + MYJ) + i2tid + MYJ;
if (i2tid <= MYJ * 2)
s_coefs0[i2tid] = c_coefs0[i2tid];
if (i2tid < MYJ * 2) {
s_coefs1[i2tid] = c_coefs1[i2tid];
s_coefs2[i2tid] = c_coefs2[i2tid];
}
__syncthreads();
if (relax_method == 1) {
/* Weighted Gauss-Seidel relaxation for the equation "operator" b = src
a contains the temporary array holding also the boundary values. */
// Coefficient needed multiple times later
// const double coef = 1.0/c_coefs[0];
/* FIXME: NOT WORKIN ATM */
return;
} else {
/* Weighted Jacobi relaxation for the equation "operator" b = src
a contains the temporary array holding also the boundary values. */
for (int c=0; c < MYJ; c++) {
if ((i1 < c_n.y) && (i2 < c_n.z))
acache0[c] = a[(c - MYJ) * (a_size.y)];
}
for (int i0=0; i0 < xlen; i0++) {
if (i1 < c_n.y + MYJ) {
acache12p[-MYJ] = a[-MYJ];
if ((i2tid < MYJ * 2) && (i2 < c_n.z + MYJ - BLOCK_X + MYJ))
acache12p[BLOCK_X - MYJ] = a[BLOCK_X - MYJ];
}
if (i1tid < MYJ) {
acache12p[-ACACHE_X * MYJ] = a[-a_size.z * MYJ];
if (i1 < c_n.y + MYJ - BLOCK_Y)
acache12p[ACACHE_X * BLOCK_Y] = a[a_size.z * BLOCK_Y];
}
__syncthreads();
acache0t[0] = 0.0;
for (int c=0; c < MYJ; c++)
acache0t[0] += acache12p[ACACHE_X * (c - MYJ)] * s_coefs1[c];
for (int c=0; c < MYJ; c++)
acache0t[0] += acache12p[c - MYJ] * s_coefs2[c];
for (int c=0; c < MYJ; c++)
acache0t[0] += acache12p[c + 1] * s_coefs2[c + MYJ];
for (int c=0; c < MYJ; c++)
acache0t[0] += acache12p[ACACHE_X * (c + 1)]
* s_coefs1[c + MYJ];
for (int c=0; c < MYJ; c++)
acache0t[0] += acache0[c] * s_coefs0[c];
for (int c=0; c < MYJ; c++)
acache0t[c + 1] += acache12p[0] * s_coefs0[c + 1 + MYJ];
for (int c=0; c < ncoefs; c++)
acache0t[0] += a[c_offsets[c]] * c_coefs[c];
if (i0 >= MYJ) {
if ((i1 < c_n.y) && (i2 < c_n.z)) {
b[0] = (1.0 - w) * b[0]
+ w * (src[0] - acache0t[MYJ]) / coef_relax;
}
b += b_size.y;
src += b_size.y;
}
for (int c=0; c < MYJ - 1; c++) {
acache0[c] = acache0[c + 1];
}
acache0[MYJ - 1] = acache12p[0];
for (int c=MYJ;c > 0; c--) {
acache0t[c] = acache0t[c - 1];
}
a += a_size.y;
__syncthreads();
}
#pragma unroll
for (int i0=0; i0 < MYJ; i0++) {
if ((i1 < c_n.y) && (i2 < c_n.z))
acache0[0] = a[0];
if (i0 < 1)
acache0t[1 - i0] += acache0[0] * s_coefs0[1 + MYJ];
#if MYJ >= 2
if (i0 < 2)
acache0t[2 - i0] += acache0[0] * s_coefs0[2 + MYJ];
#endif
#if MYJ >= 3
if (i0 < 3)
acache0t[3 - i0] += acache0[0] * s_coefs0[3 + MYJ];
#endif
#if MYJ >= 4
if (i0 < 4)
acache0t[4 - i0] += acache0[0] * s_coefs0[4 + MYJ];
#endif
#if MYJ >= 5
if (i0 < 5)
acache0t[5 - i0] += acache0[0] * s_coefs0[5 + MYJ];
#endif
if (i0 + xlen >= MYJ) {
if ((i1 < c_n.y) && (i2 < c_n.z)) {
b[0] = (1.0 - w) * b[0]
+ w * (src[0] - acache0t[MYJ - i0]) / coef_relax;
}
b += b_size.y;
src += b_size.y;
}
a += a_size.y;
}
}
}
__global__ void RELAX_kernel_onlyb(
const int relax_method, const double coef_relax,
const int ncoefs, const double *c_coefs,
const long *c_offsets,
const double *c_coefs0,
const double *c_coefs1,
const double *c_coefs2,
const double* a, double* b,
const double* src, const long3 c_n,
const int3 c_jb, const int boundary,
const double w, const int xdiv)
{
int xx = MAX((c_n.z + BLOCK_X - 1) / BLOCK_X, 1);
int yy = MAX((c_n.y + BLOCK_Y - 1) / BLOCK_Y, 1);
int ysiz = c_n.y;
if ((boundary & GPAW_BOUNDARY_Y0) != 0)
ysiz -= BLOCK_Y;
if ((boundary & GPAW_BOUNDARY_Y1) != 0)
ysiz -= BLOCK_Y;
int yy2 = MAX((ysiz + BLOCK_Y - 1) / BLOCK_Y, 0);
int i2bl, i1bl;
int xlen = c_n.x;
int xind = 0;
int xstart = 0;
int i1pitch = 0;
int i2pitch = 0;
int xmax = c_n.x;
int ymax = c_n.y;
int zmax = c_n.z;
int blockix;
blockix = blockIdx.x;
if ((boundary & GPAW_BOUNDARY_X0) != 0) {
if ((blockix >= 0) && (blockix < xx * yy)) {
i1bl = blockix / xx;
i2bl = blockix-i1bl * xx;
xlen = c_jb.x / 2;
xstart = 0;
}
blockix -= xx * yy;
}
if ((boundary & GPAW_BOUNDARY_X1) != 0) {
if ((blockix >= 0) && (blockix < xx * yy)) {
i1bl = blockix / xx;
i2bl = blockix-i1bl * xx;
xlen = c_jb.x / 2;
xstart += c_n.x - c_jb.x / 2;
}
blockix -= xx * yy;
}
if (blockix >= 0) {
if ((boundary & GPAW_BOUNDARY_Y0) != 0) {
if ((blockix >= 0) && (blockix < xdiv * xx)) {
xind = blockix / xx;
i2bl = blockix - xind * xx;
i1bl = 0;
ymax = MIN(BLOCK_Y, ymax);
}
blockix -= xdiv * xx;
}
if ((boundary & GPAW_BOUNDARY_Y1) != 0) {
if ((blockix >= 0) && (blockix < xdiv * xx)) {
xind = blockix / xx;
i2bl = blockix - xind * xx;
i1bl = 0;
i1pitch = MAX(c_n.y - BLOCK_Y, 0);
}
blockix -= xdiv * xx;
}
if ((boundary & GPAW_BOUNDARY_Z0) != 0) {
if ((blockix >= 0) && (blockix < xdiv * yy2)) {
xind = blockix / yy2;
i2bl = 0;
zmax = MIN(BLOCK_X, zmax);
i1bl = blockix - xind * yy2;
if ((boundary & GPAW_BOUNDARY_Y0) != 0)
i1pitch = BLOCK_Y;
if ((boundary & GPAW_BOUNDARY_Y1) != 0)
ymax = MAX(c_n.y - BLOCK_Y, 0);
}
blockix -= xdiv * yy2;
}
if ((boundary & GPAW_BOUNDARY_Z1) != 0) {
if ((blockix >= 0) && (blockix < xdiv * yy2)) {
xind = blockix / yy2;
i2bl = 0;
i2pitch = MAX(c_n.z - BLOCK_X, 0);
i1bl = blockix - xind * yy2;
if ((boundary & GPAW_BOUNDARY_Y0) != 0)
i1pitch = BLOCK_Y;
if ((boundary & GPAW_BOUNDARY_Y1) != 0)
ymax = MAX(c_n.y - BLOCK_Y, 0);
}
blockix -= xdiv * yy2;
}
if ((boundary & GPAW_BOUNDARY_X0) != 0) {
xstart += c_jb.x / 2;
xlen -= c_jb.x / 2;
}
if ((boundary & GPAW_BOUNDARY_X1) != 0) {
xlen -= c_jb.x / 2;
xmax -= c_jb.x / 2;
}
xlen = (xlen + xdiv - 1) / xdiv;
xstart += xind * xlen;
}
int i2tid = threadIdx.x;
int i2 = i2pitch + i2bl * BLOCK_X + i2tid;
int i1tid = threadIdx.y;
int i1 = i1pitch + i1bl * BLOCK_Y + i1tid;
__shared__ double s_coefs0[MYJ * 2 + 1];
__shared__ double s_coefs1[MYJ * 2];
__shared__ double s_coefs2[MYJ * 2];
__shared__ double acache12[ACACHE_X * ACACHE_Y];
double acache0[MYJ];
double acache0t[MYJ + 1];
double *acache12p;
int sizez = c_jb.z + c_n.z;
int sizeyz = (c_jb.y + c_n.y) * sizez;
if ((xmax-xstart) < xlen)
xlen = xmax - xstart;
acache12p = acache12 + ACACHE_X * (i1tid + MYJ) + i2tid + MYJ;
if (i2tid <= MYJ * 2)
s_coefs0[i2tid] = c_coefs0[i2tid];
if (i2tid < MYJ * 2) {
s_coefs1[i2tid] = c_coefs1[i2tid];
s_coefs2[i2tid] = c_coefs2[i2tid];
}
__syncthreads();
a += xstart * sizeyz + i1 * sizez + i2;
b += xstart * c_n.y * c_n.z + i1 * c_n.z + i2;
src += xstart * c_n.y * c_n.z + i1 * c_n.z + i2;
if (relax_method == 1) {
/* Weighted Gauss-Seidel relaxation for the equation "operator" b = src
a contains the temporary array holding also the boundary values. */
// Coefficient needed multiple times later
// const double coef = 1.0/c_coefs[0];
/* FIXME: NOT WORKIN ATM */
return;
} else {
/* Weighted Jacobi relaxation for the equation "operator" b = src
a contains the temporariry array holding also the boundary values. */
for (int c=0; c < MYJ; c++) {
if ((i1 < ymax) && (i2 < zmax))
acache0[c] = a[(c - MYJ) * (sizeyz)];
}
for (int i0=0; i0 < xlen; i0++) {
if (i1 < ymax + MYJ) {
acache12p[-MYJ] = a[-MYJ];
if ((i2tid < MYJ * 2) && (i2 < zmax + MYJ - BLOCK_X + MYJ))
acache12p[BLOCK_X - MYJ] = a[BLOCK_X - MYJ];
}
if (i1tid < MYJ) {
acache12p[-ACACHE_X * MYJ] = a[-sizez * MYJ];
if (i1 < ymax + MYJ - BLOCK_Y)
acache12p[ACACHE_X * BLOCK_Y] = a[sizez * BLOCK_Y];
}
__syncthreads();
acache0t[0] = 0.0;
for (int c=0; c < MYJ; c++)
acache0t[0] += acache12p[ACACHE_X * (c - MYJ)] * s_coefs1[c];
for (int c=0; c < MYJ; c++)
acache0t[0] += acache12p[c - MYJ] * s_coefs2[c];
for (int c=0; c < MYJ; c++)
acache0t[0] += acache12p[c+1] * s_coefs2[c + MYJ];
for (int c=0; c < MYJ; c++)
acache0t[0] += acache12p[ACACHE_X * (c + 1)]
* s_coefs1[c + MYJ];
for (int c=0; c < MYJ; c++)
acache0t[0] += acache0[c] * s_coefs0[c];
for (int c=0; c < MYJ; c++)
acache0t[c + 1] += acache12p[0] * s_coefs0[c + 1 + MYJ];
for (int c=0; c < ncoefs; c++)
acache0t[0] += a[c_offsets[c]] * c_coefs[c];
if (i0 >= MYJ) {
if ((i1 < ymax) && (i2 < zmax)) {
b[0] = (1.0 - w) * b[0]
+ w * (src[0] - acache0t[MYJ]) / coef_relax;
}
b += c_n.y * c_n.z;
src += c_n.y * c_n.z;
}
for (int c=0; c < MYJ - 1; c++) {
acache0[c] = acache0[c + 1];
}
acache0[MYJ - 1] = acache12p[0];
for (int c=MYJ; c > 0; c--) {
acache0t[c] = acache0t[c - 1];
}
a += sizeyz;
__syncthreads();
}
#pragma unroll
for (int i0=0; i0 < MYJ; i0++) {
if ((i1 < c_n.y) && (i2 < c_n.z))
acache0[0] = a[0];
if (i0 < 1)
acache0t[1 - i0] += acache0[0] * s_coefs0[1 + MYJ];
#if MYJ >= 2
if (i0 < 2)
acache0t[2 - i0] += acache0[0] * s_coefs0[2 + MYJ];
#endif
#if MYJ >= 3
if (i0 < 3)
acache0t[3 - i0] += acache0[0] * s_coefs0[3 + MYJ];
#endif
#if MYJ >= 4
if (i0 < 4)
acache0t[4 - i0] += acache0[0] * s_coefs0[4 + MYJ];
#endif
#if MYJ >= 5
if (i0 < 5)
acache0t[5 - i0] += acache0[0] * s_coefs0[5 + MYJ];
#endif
if (i0 + xlen >= MYJ) {
if ((i1 < ymax) && (i2 < zmax)) {
b[0] = (1.0 - w) * b[0]
+ w * (src[0] - acache0t[MYJ - i0]) / coef_relax;
}
b += c_n.y * c_n.z;
src += c_n.y * c_n.z;
}
a += sizeyz;
}
}
}
#else
#define MYJ (2/2)
# define RELAX_kernel relax_kernel2
# define RELAX_kernel_onlyb relax_kernel2_onlyb
# include "relax.cpp"
# undef RELAX_kernel
# undef RELAX_kernel_onlyb
# undef MYJ
#define MYJ (4/2)
# define RELAX_kernel relax_kernel4
# define RELAX_kernel_onlyb relax_kernel4_onlyb
# include "relax.cpp"
# undef RELAX_kernel
# undef RELAX_kernel_onlyb
# undef MYJ
#define MYJ (6/2)
# define RELAX_kernel relax_kernel6
# define RELAX_kernel_onlyb relax_kernel6_onlyb
# include "relax.cpp"
# undef RELAX_kernel
# undef RELAX_kernel_onlyb
# undef MYJ
#define MYJ (8/2)
# define RELAX_kernel relax_kernel8
# define RELAX_kernel_onlyb relax_kernel8_onlyb
# include "relax.cpp"
# undef RELAX_kernel
# undef RELAX_kernel_onlyb
# undef MYJ
#define MYJ (10/2)
# define RELAX_kernel relax_kernel10
# define RELAX_kernel_onlyb relax_kernel10_onlyb
# include "relax.cpp"
# undef RELAX_kernel
# undef RELAX_kernel_onlyb
# undef MYJ
extern "C"
bmgsstencil_gpu bmgs_stencil_to_gpu(const bmgsstencil* s);
extern "C"
int bmgs_fd_boundary_test(const bmgsstencil_gpu* s, int boundary,
int ndouble);
extern "C"
void bmgs_relax_gpu(const int relax_method,
const bmgsstencil_gpu* s_gpu,
double* adev, double* bdev, const double* src,
const double w, int boundary,
gpuStream_t stream)
{
int3 jb;
int3 bjb;
int3 hc_bj;
long3 hc_n;
long3 hc_j;
dim3 dimBlock(BLOCK_X, BLOCK_Y);
if ((boundary & GPAW_BOUNDARY_SKIP) != 0) {
if (!bmgs_fd_boundary_test(s_gpu, boundary, 1))
return;
} else if ((boundary & GPAW_BOUNDARY_ONLY) != 0) {
if (!bmgs_fd_boundary_test(s_gpu, boundary, 1)) {
boundary &= ~GPAW_BOUNDARY_ONLY;
boundary |= GPAW_BOUNDARY_NORMAL;
}
}
hc_n.x = s_gpu->n[0];
hc_n.y = s_gpu->n[1];
hc_n.z = s_gpu->n[2];
hc_j.x = s_gpu->j[0];
hc_j.y = s_gpu->j[1];
hc_j.z = s_gpu->j[2];
bjb.x = 0;
bjb.y = 0;
bjb.z = 0;
hc_bj.x = 0;
hc_bj.y = 0;
hc_bj.z = 0;
jb.z = hc_j.z;
jb.y = hc_j.y / (hc_j.z + hc_n.z);
jb.x = hc_j.x / ((hc_j.z + hc_n.z) * hc_n.y + hc_j.y);
if ((boundary & GPAW_BOUNDARY_SKIP) != 0) {
int3 jb1;
int3 bjb1, bjb2;
bjb1.x = 0;
bjb1.y = 0;
bjb1.z = 0;
bjb2.x = 0;
bjb2.y = 0;
bjb2.z = 0;
jb1.z = jb.z / 2;
jb1.x = jb.x / 2;
jb1.y = jb.y / 2;
if ((boundary & GPAW_BOUNDARY_X0) != 0) {
bjb1.x += jb.x / 2;
}
if ((boundary & GPAW_BOUNDARY_X1) != 0) {
bjb2.x += jb.x / 2;
}
if ((boundary & GPAW_BOUNDARY_Y0) != 0) {
bjb1.y += dimBlock.y;
}
if ((boundary & GPAW_BOUNDARY_Y1) != 0) {
bjb2.y += dimBlock.y;
}
if ((boundary & GPAW_BOUNDARY_Z0) != 0) {
bjb1.z += dimBlock.x;
}
if ((boundary & GPAW_BOUNDARY_Z1) != 0) {
bjb2.z += dimBlock.x;
}
bjb.x = bjb1.x + bjb2.x;
bjb.y = bjb1.y + bjb2.y;
bjb.z = bjb1.z + bjb2.z;
hc_n.x -= bjb.x;
hc_n.y -= bjb.y;
hc_n.z -= bjb.z;
jb.x += bjb.x;
jb.y += bjb.y;
jb.z += bjb.z;
jb1.x += bjb1.x;
jb1.y += bjb1.y;
jb1.z += bjb1.z;
hc_bj.z = bjb.z;
hc_bj.y = bjb.y * (hc_bj.z + hc_n.z);
hc_bj.x = bjb.x * ((hc_bj.z + hc_n.z) * hc_n.y + hc_bj.y);
hc_j.z = jb.z;
hc_j.y = jb.y * (hc_j.z + hc_n.z);
hc_j.x = jb.x * ((hc_j.z + hc_n.z) * hc_n.y + hc_j.y);
bdev += bjb1.z + bjb1.y * (hc_bj.z + hc_n.z)
+ bjb1.x * ((hc_bj.z + hc_n.z) * hc_n.y + hc_bj.y);
src += bjb1.z + bjb1.y * (hc_bj.z + hc_n.z)
+ bjb1.x * ((hc_bj.z + hc_n.z) * hc_n.y + hc_bj.y);
adev = (Tgpu*) ((double*) adev + jb1.z
+ jb1.y * (hc_j.z + hc_n.z)
+ jb1.x * ((hc_j.z + hc_n.z) * hc_n.y + hc_j.y));
} else {
adev = (Tgpu*) ((double*) adev + (hc_j.x + hc_j.y + hc_j.z) / 2);
}
if ((hc_n.x <= 0) || (hc_n.y <= 0) || (hc_n.z <= 0))
return;
dim3 dimGrid(1,1,1);
int xdiv = MIN(hc_n.x, 4);
if (((boundary & GPAW_BOUNDARY_NORMAL) != 0)
|| ((boundary & GPAW_BOUNDARY_SKIP) != 0)) {
dimGrid.x = xdiv * MAX((hc_n.z + dimBlock.x - 1) / dimBlock.x, 1);
dimGrid.y = MAX((hc_n.y + dimBlock.y - 1) / dimBlock.y, 1);
} else if ((boundary & GPAW_BOUNDARY_ONLY) != 0) {
int xx = MAX((hc_n.z + dimBlock.x - 1) / dimBlock.x, 1);
int yy = MAX((hc_n.y + dimBlock.y - 1) / dimBlock.y, 1);
int ysiz = hc_n.y;
if ((boundary & GPAW_BOUNDARY_Y0) != 0)
ysiz -= dimBlock.y;
if ((boundary & GPAW_BOUNDARY_Y1) != 0)
ysiz -= dimBlock.y;
int yy2 = MAX((ysiz + dimBlock.y - 1) / dimBlock.y, 0);
dimGrid.x = 0;
if ((boundary & GPAW_BOUNDARY_X0) != 0)
dimGrid.x += xx * yy;
if ((boundary & GPAW_BOUNDARY_X1) != 0)
dimGrid.x += xx * yy;
if ((boundary & GPAW_BOUNDARY_Y0) != 0)
dimGrid.x += xdiv * xx;
if ((boundary & GPAW_BOUNDARY_Y1) != 0)
dimGrid.x += xdiv * xx;
if ((boundary & GPAW_BOUNDARY_Z0) != 0)
dimGrid.x += xdiv * yy2;
if ((boundary & GPAW_BOUNDARY_Z1) != 0)
dimGrid.x += xdiv * yy2;
dimGrid.y = 1;
}
int3 sizea;
sizea.z = hc_j.z + hc_n.z;
sizea.y = sizea.z * hc_n.y + hc_j.y;
sizea.x = sizea.y * hc_n.x + hc_j.x;
int3 sizeb;
sizeb.z = hc_bj.z + hc_n.z;
sizeb.y = sizeb.z * hc_n.y + hc_bj.y;
sizeb.x = sizeb.y * hc_n.x + hc_bj.x;
if (((boundary & GPAW_BOUNDARY_NORMAL) != 0)
|| ((boundary & GPAW_BOUNDARY_SKIP) != 0)) {
void (*relax_kernel)(
const int relax_method, const double coef_relax,
const int ncoefs, const double* c_coefs,
const long* c_offsets,
const double* c_coefs0,
const double* c_coefs1,
const double* c_coefs2,
const double* a, double* b,
const double* src, const long3 c_n,
const int3 a_size, const int3 b_size,
const double w, const int xdiv);
switch (s_gpu->ncoefs0) {
case 3:
relax_kernel = relax_kernel2;
break;
case 5:
relax_kernel = relax_kernel4;
break;
case 7:
relax_kernel = relax_kernel6;
break;
case 9:
relax_kernel = relax_kernel8;
break;
case 11:
relax_kernel = relax_kernel10;
break;
default:
assert(0);
}
gpuLaunchKernel(
(*relax_kernel), dimGrid, dimBlock, 0, stream,
relax_method, s_gpu->coef_relax, s_gpu->ncoefs,
s_gpu->coefs_gpu, s_gpu->offsets_gpu,
s_gpu->coefs0_gpu, s_gpu->coefs1_gpu, s_gpu->coefs2_gpu,
adev, bdev, src, hc_n, sizea, sizeb, w, xdiv);
} else if ((boundary & GPAW_BOUNDARY_ONLY) != 0) {
void (*relax_kernel)(
const int relax_method, const double coef_relax,
const int ncoefs, const double* c_coefs,
const long* c_offsets,
const double* c_coefs0,
const double* c_coefs1,
const double* c_coefs2,
const double* a, double* b,
const double* src, const long3 c_n,
const int3 c_jb, const int boundary,
const double w, const int xdiv);
switch (s_gpu->ncoefs0) {
case 3:
relax_kernel = relax_kernel2_onlyb;
break;
case 5:
relax_kernel = relax_kernel4_onlyb;
break;
case 7:
relax_kernel = relax_kernel6_onlyb;
break;
case 9:
relax_kernel = relax_kernel8_onlyb;
break;
case 11:
relax_kernel = relax_kernel10_onlyb;
break;
default:
assert(0);
}
gpuLaunchKernel(
(*relax_kernel), dimGrid, dimBlock, 0, stream,
relax_method, s_gpu->coef_relax, s_gpu->ncoefs,
s_gpu->coefs_gpu, s_gpu->offsets_gpu,
s_gpu->coefs0_gpu, s_gpu->coefs1_gpu, s_gpu->coefs2_gpu,
adev, bdev, src, hc_n, jb, boundary, w, xdiv);
}
gpuCheckLastError();
}
#endif
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