int
HYPRE_StructVectorPrint( char *filename,
HYPRE_StructVector vector,
int all )
{
return ( hypre_StructVectorPrint(filename, vector, all) );
}
HYPRE_Int
hypre_SMGSolve( void *smg_vdata,
hypre_StructMatrix *A,
hypre_StructVector *b,
hypre_StructVector *x )
{
hypre_SMGData *smg_data = smg_vdata;
double tol = (smg_data -> tol);
HYPRE_Int max_iter = (smg_data -> max_iter);
HYPRE_Int rel_change = (smg_data -> rel_change);
HYPRE_Int zero_guess = (smg_data -> zero_guess);
HYPRE_Int num_levels = (smg_data -> num_levels);
HYPRE_Int num_pre_relax = (smg_data -> num_pre_relax);
HYPRE_Int num_post_relax = (smg_data -> num_post_relax);
hypre_IndexRef base_index = (smg_data -> base_index);
hypre_IndexRef base_stride = (smg_data -> base_stride);
hypre_StructMatrix **A_l = (smg_data -> A_l);
hypre_StructMatrix **PT_l = (smg_data -> PT_l);
hypre_StructMatrix **R_l = (smg_data -> R_l);
hypre_StructVector **b_l = (smg_data -> b_l);
hypre_StructVector **x_l = (smg_data -> x_l);
hypre_StructVector **r_l = (smg_data -> r_l);
hypre_StructVector **e_l = (smg_data -> e_l);
void **relax_data_l = (smg_data -> relax_data_l);
void **residual_data_l = (smg_data -> residual_data_l);
void **restrict_data_l = (smg_data -> restrict_data_l);
void **interp_data_l = (smg_data -> interp_data_l);
HYPRE_Int logging = (smg_data -> logging);
double *norms = (smg_data -> norms);
double *rel_norms = (smg_data -> rel_norms);
double b_dot_b = 0, r_dot_r, eps = 0;
double e_dot_e = 0, x_dot_x = 1;
HYPRE_Int i, l;
#if DEBUG
char filename[255];
#endif
/*-----------------------------------------------------
* Initialize some things and deal with special cases
*-----------------------------------------------------*/
hypre_BeginTiming(smg_data -> time_index);
hypre_StructMatrixDestroy(A_l[0]);
hypre_StructVectorDestroy(b_l[0]);
hypre_StructVectorDestroy(x_l[0]);
A_l[0] = hypre_StructMatrixRef(A);
b_l[0] = hypre_StructVectorRef(b);
x_l[0] = hypre_StructVectorRef(x);
(smg_data -> num_iterations) = 0;
/* if max_iter is zero, return */
if (max_iter == 0)
{
/* if using a zero initial guess, return zero */
if (zero_guess)
{
hypre_StructVectorSetConstantValues(x, 0.0);
}
hypre_EndTiming(smg_data -> time_index);
return hypre_error_flag;
}
/* part of convergence check */
if (tol > 0.0)
{
/* eps = (tol^2) */
b_dot_b = hypre_StructInnerProd(b_l[0], b_l[0]);
eps = tol*tol;
/* if rhs is zero, return a zero solution */
if (b_dot_b == 0.0)
{
hypre_StructVectorSetConstantValues(x, 0.0);
if (logging > 0)
{
norms[0] = 0.0;
rel_norms[0] = 0.0;
}
hypre_EndTiming(smg_data -> time_index);
return hypre_error_flag;
}
}
/*-----------------------------------------------------
* Do V-cycles:
* For each index l, "fine" = l, "coarse" = (l+1)
*-----------------------------------------------------*/
for (i = 0; i < max_iter; i++)
{
/*--------------------------------------------------
* Down cycle
*--------------------------------------------------*/
/* fine grid pre-relaxation */
if (num_levels > 1)
{
hypre_SMGRelaxSetRegSpaceRank(relax_data_l[0], 0, 0);
hypre_SMGRelaxSetRegSpaceRank(relax_data_l[0], 1, 1);
}
hypre_SMGRelaxSetMaxIter(relax_data_l[0], num_pre_relax);
hypre_SMGRelaxSetZeroGuess(relax_data_l[0], zero_guess);
hypre_SMGRelax(relax_data_l[0], A_l[0], b_l[0], x_l[0]);
zero_guess = 0;
/* compute fine grid residual (b - Ax) */
hypre_SMGResidual(residual_data_l[0], A_l[0], x_l[0], b_l[0], r_l[0]);
/* convergence check */
if (tol > 0.0)
{
r_dot_r = hypre_StructInnerProd(r_l[0], r_l[0]);
if (logging > 0)
{
norms[i] = sqrt(r_dot_r);
if (b_dot_b > 0)
rel_norms[i] = sqrt(r_dot_r/b_dot_b);
else
rel_norms[i] = 0.0;
}
/* always do at least 1 V-cycle */
if ((r_dot_r/b_dot_b < eps) && (i > 0))
{
if (rel_change)
{
if ((e_dot_e/x_dot_x) < eps)
break;
}
else
{
break;
}
}
}
if (num_levels > 1)
{
/* restrict fine grid residual */
hypre_SemiRestrict(restrict_data_l[0], R_l[0], r_l[0], b_l[1]);
#if DEBUG
if(hypre_StructStencilDim(hypre_StructMatrixStencil(A)) == 3)
{
hypre_sprintf(filename, "zout_xdown.%02d", 0);
hypre_StructVectorPrint(filename, x_l[0], 0);
hypre_sprintf(filename, "zout_rdown.%02d", 0);
hypre_StructVectorPrint(filename, r_l[0], 0);
hypre_sprintf(filename, "zout_b.%02d", 1);
hypre_StructVectorPrint(filename, b_l[1], 0);
}
#endif
for (l = 1; l <= (num_levels - 2); l++)
{
/* pre-relaxation */
hypre_SMGRelaxSetRegSpaceRank(relax_data_l[l], 0, 0);
hypre_SMGRelaxSetRegSpaceRank(relax_data_l[l], 1, 1);
hypre_SMGRelaxSetMaxIter(relax_data_l[l], num_pre_relax);
hypre_SMGRelaxSetZeroGuess(relax_data_l[l], 1);
hypre_SMGRelax(relax_data_l[l], A_l[l], b_l[l], x_l[l]);
/* compute residual (b - Ax) */
hypre_SMGResidual(residual_data_l[l],
A_l[l], x_l[l], b_l[l], r_l[l]);
/* restrict residual */
hypre_SemiRestrict(restrict_data_l[l], R_l[l], r_l[l], b_l[l+1]);
#if DEBUG
if(hypre_StructStencilDim(hypre_StructMatrixStencil(A)) == 3)
{
hypre_sprintf(filename, "zout_xdown.%02d", l);
hypre_StructVectorPrint(filename, x_l[l], 0);
hypre_sprintf(filename, "zout_rdown.%02d", l);
hypre_StructVectorPrint(filename, r_l[l], 0);
hypre_sprintf(filename, "zout_b.%02d", l+1);
hypre_StructVectorPrint(filename, b_l[l+1], 0);
}
#endif
}
/*--------------------------------------------------
* Bottom
*--------------------------------------------------*/
hypre_SMGRelaxSetZeroGuess(relax_data_l[l], 1);
hypre_SMGRelax(relax_data_l[l], A_l[l], b_l[l], x_l[l]);
#if DEBUG
if(hypre_StructStencilDim(hypre_StructMatrixStencil(A)) == 3)
{
hypre_sprintf(filename, "zout_xbottom.%02d", l);
hypre_StructVectorPrint(filename, x_l[l], 0);
}
#endif
/*--------------------------------------------------
* Up cycle
*--------------------------------------------------*/
for (l = (num_levels - 2); l >= 1; l--)
{
/* interpolate error and correct (x = x + Pe_c) */
hypre_SemiInterp(interp_data_l[l], PT_l[l], x_l[l+1], e_l[l]);
hypre_StructAxpy(1.0, e_l[l], x_l[l]);
#if DEBUG
if(hypre_StructStencilDim(hypre_StructMatrixStencil(A)) == 3)
{
hypre_sprintf(filename, "zout_eup.%02d", l);
hypre_StructVectorPrint(filename, e_l[l], 0);
hypre_sprintf(filename, "zout_xup.%02d", l);
hypre_StructVectorPrint(filename, x_l[l], 0);
}
#endif
/* post-relaxation */
hypre_SMGRelaxSetRegSpaceRank(relax_data_l[l], 0, 1);
hypre_SMGRelaxSetRegSpaceRank(relax_data_l[l], 1, 0);
hypre_SMGRelaxSetMaxIter(relax_data_l[l], num_post_relax);
hypre_SMGRelaxSetZeroGuess(relax_data_l[l], 0);
hypre_SMGRelax(relax_data_l[l], A_l[l], b_l[l], x_l[l]);
}
/* interpolate error and correct on fine grid (x = x + Pe_c) */
hypre_SemiInterp(interp_data_l[0], PT_l[0], x_l[1], e_l[0]);
hypre_SMGAxpy(1.0, e_l[0], x_l[0], base_index, base_stride);
#if DEBUG
if(hypre_StructStencilDim(hypre_StructMatrixStencil(A)) == 3)
{
hypre_sprintf(filename, "zout_eup.%02d", 0);
hypre_StructVectorPrint(filename, e_l[0], 0);
hypre_sprintf(filename, "zout_xup.%02d", 0);
hypre_StructVectorPrint(filename, x_l[0], 0);
}
#endif
}
/* part of convergence check */
if ((tol > 0.0) && (rel_change))
{
if (num_levels > 1)
{
e_dot_e = hypre_StructInnerProd(e_l[0], e_l[0]);
x_dot_x = hypre_StructInnerProd(x_l[0], x_l[0]);
}
else
{
e_dot_e = 0.0;
x_dot_x = 1.0;
}
}
/* fine grid post-relaxation */
if (num_levels > 1)
{
hypre_SMGRelaxSetRegSpaceRank(relax_data_l[0], 0, 1);
hypre_SMGRelaxSetRegSpaceRank(relax_data_l[0], 1, 0);
}
hypre_SMGRelaxSetMaxIter(relax_data_l[0], num_post_relax);
hypre_SMGRelaxSetZeroGuess(relax_data_l[0], 0);
hypre_SMGRelax(relax_data_l[0], A_l[0], b_l[0], x_l[0]);
(smg_data -> num_iterations) = (i + 1);
}
hypre_EndTiming(smg_data -> time_index);
return hypre_error_flag;
}
HYPRE_Int
hypre_SparseMSGSolve( void *smsg_vdata,
hypre_StructMatrix *A,
hypre_StructVector *b,
hypre_StructVector *x )
{
hypre_SparseMSGData *smsg_data = smsg_vdata;
HYPRE_Real tol = (smsg_data -> tol);
HYPRE_Int max_iter = (smsg_data -> max_iter);
HYPRE_Int rel_change = (smsg_data -> rel_change);
HYPRE_Int zero_guess = (smsg_data -> zero_guess);
HYPRE_Int jump = (smsg_data -> jump);
HYPRE_Int num_pre_relax = (smsg_data -> num_pre_relax);
HYPRE_Int num_post_relax = (smsg_data -> num_post_relax);
HYPRE_Int num_fine_relax = (smsg_data -> num_fine_relax);
HYPRE_Int *num_grids = (smsg_data -> num_grids);
HYPRE_Int num_all_grids = (smsg_data -> num_all_grids);
HYPRE_Int num_levels = (smsg_data -> num_levels);
hypre_StructMatrix **A_array = (smsg_data -> A_array);
hypre_StructMatrix **Px_array = (smsg_data -> Px_array);
hypre_StructMatrix **Py_array = (smsg_data -> Py_array);
hypre_StructMatrix **Pz_array = (smsg_data -> Pz_array);
hypre_StructMatrix **RTx_array = (smsg_data -> RTx_array);
hypre_StructMatrix **RTy_array = (smsg_data -> RTy_array);
hypre_StructMatrix **RTz_array = (smsg_data -> RTz_array);
hypre_StructVector **b_array = (smsg_data -> b_array);
hypre_StructVector **x_array = (smsg_data -> x_array);
hypre_StructVector **t_array = (smsg_data -> t_array);
hypre_StructVector **r_array = (smsg_data -> r_array);
hypre_StructVector **e_array = (smsg_data -> e_array);
hypre_StructVector **visitx_array = (smsg_data -> visitx_array);
hypre_StructVector **visity_array = (smsg_data -> visity_array);
hypre_StructVector **visitz_array = (smsg_data -> visitz_array);
HYPRE_Int *grid_on = (smsg_data -> grid_on);
void **relax_array = (smsg_data -> relax_array);
void **matvec_array = (smsg_data -> matvec_array);
void **restrictx_array = (smsg_data -> restrictx_array);
void **restricty_array = (smsg_data -> restricty_array);
void **restrictz_array = (smsg_data -> restrictz_array);
void **interpx_array = (smsg_data -> interpx_array);
void **interpy_array = (smsg_data -> interpy_array);
void **interpz_array = (smsg_data -> interpz_array);
HYPRE_Int logging = (smsg_data -> logging);
HYPRE_Real *norms = (smsg_data -> norms);
HYPRE_Real *rel_norms = (smsg_data -> rel_norms);
HYPRE_Int *restrict_count;
HYPRE_Real b_dot_b, r_dot_r, eps;
HYPRE_Real e_dot_e, x_dot_x;
HYPRE_Int i, l, lx, ly, lz;
HYPRE_Int lymin, lymax, lzmin, lzmax;
HYPRE_Int fi, ci;
HYPRE_Int ierr = 0;
#if DEBUG
char filename[255];
#endif
/*-----------------------------------------------------
* Initialize some things and deal with special cases
*-----------------------------------------------------*/
hypre_BeginTiming(smsg_data -> time_index);
hypre_StructMatrixDestroy(A_array[0]);
hypre_StructVectorDestroy(b_array[0]);
hypre_StructVectorDestroy(x_array[0]);
A_array[0] = hypre_StructMatrixRef(A);
b_array[0] = hypre_StructVectorRef(b);
x_array[0] = hypre_StructVectorRef(x);
(smsg_data -> num_iterations) = 0;
/* if max_iter is zero, return */
if (max_iter == 0)
{
/* if using a zero initial guess, return zero */
if (zero_guess)
{
hypre_StructVectorSetConstantValues(x, 0.0);
}
hypre_EndTiming(smsg_data -> time_index);
return ierr;
}
/* part of convergence check */
if (tol > 0.0)
{
/* eps = (tol^2) */
b_dot_b = hypre_StructInnerProd(b_array[0], b_array[0]);
eps = tol*tol;
/* if rhs is zero, return a zero solution */
if (b_dot_b == 0.0)
{
hypre_StructVectorSetConstantValues(x, 0.0);
if (logging > 0)
{
norms[0] = 0.0;
rel_norms[0] = 0.0;
}
hypre_EndTiming(smsg_data -> time_index);
return ierr;
}
}
restrict_count = hypre_TAlloc(HYPRE_Int, num_all_grids);
/*-----------------------------------------------------
* Do V-cycles:
* For each index l, "fine" = l, "coarse" = (l+1)
*-----------------------------------------------------*/
for (i = 0; i < max_iter; i++)
{
/*--------------------------------------------------
* Down cycle:
* Note that r = b = x through the jump region
*--------------------------------------------------*/
/* fine grid pre-relaxation */
hypre_PFMGRelaxSetPreRelax(relax_array[0]);
hypre_PFMGRelaxSetMaxIter(relax_array[0], num_fine_relax);
hypre_PFMGRelaxSetZeroGuess(relax_array[0], zero_guess);
hypre_PFMGRelax(relax_array[0], A_array[0], b_array[0], x_array[0]);
zero_guess = 0;
/* compute fine grid residual (b - Ax) */
hypre_StructCopy(b_array[0], r_array[0]);
hypre_StructMatvecCompute(matvec_array[0],
-1.0, A_array[0], x_array[0], 1.0, r_array[0]);
/* convergence check */
if (tol > 0.0)
{
r_dot_r = hypre_StructInnerProd(r_array[0], r_array[0]);
if (logging > 0)
{
norms[i] = sqrt(r_dot_r);
if (b_dot_b > 0)
rel_norms[i] = sqrt(r_dot_r/b_dot_b);
else
rel_norms[i] = 0.0;
}
/* RDF */
#if 0
hypre_printf("iter = %d, rel_norm = %e\n", i, rel_norms[i]);
#endif
/* always do at least 1 V-cycle */
if ((r_dot_r/b_dot_b < eps) && (i > 0))
{
if (rel_change)
{
if ((e_dot_e/x_dot_x) < eps)
break;
}
else
{
break;
}
}
}
if (num_levels > 1)
{
/* initialize restrict_count */
for (fi = 0; fi < num_all_grids; fi++)
{
restrict_count[fi] = 0;
}
for (l = 0; l <= (num_levels - 2); l++)
{
lzmin = hypre_max((l - num_grids[1] - num_grids[0] + 2), 0);
lzmax = hypre_min((l), (num_grids[2] - 1));
for (lz = lzmin; lz <= lzmax; lz++)
{
lymin = hypre_max((l - lz - num_grids[0] + 1), 0);
lymax = hypre_min((l - lz), (num_grids[1] - 1));
for (ly = lymin; ly <= lymax; ly++)
{
lx = l - lz - ly;
hypre_SparseMSGMapIndex(lx, ly, lz, num_grids, fi);
if (!grid_on[fi])
{
break;
}
if (restrict_count[fi] > 1)
{
hypre_StructScale((1.0/restrict_count[fi]), b_array[fi]);
}
if (l > jump)
{
/* pre-relaxation */
hypre_PFMGRelaxSetPreRelax(relax_array[fi]);
hypre_PFMGRelaxSetMaxIter(relax_array[fi], num_pre_relax);
hypre_PFMGRelaxSetZeroGuess(relax_array[fi], 1);
hypre_PFMGRelax(relax_array[fi], A_array[fi], b_array[fi],
x_array[fi]);
/* compute residual (b - Ax) */
hypre_StructCopy(b_array[fi], r_array[fi]);
hypre_StructMatvecCompute(matvec_array[fi],
-1.0, A_array[fi], x_array[fi],
1.0, r_array[fi]);
}
if ((lx+1) < num_grids[0])
{
/* restrict to ((lx+1), ly, lz) */
hypre_SparseMSGMapIndex((lx+1), ly, lz, num_grids, ci);
if (grid_on[ci])
{
if (restrict_count[ci])
{
hypre_SparseMSGRestrict(restrictx_array[fi],
RTx_array[lx], r_array[fi],
t_array[ci]);
hypre_StructAxpy(1.0, t_array[ci], b_array[ci]);
}
else
{
hypre_SparseMSGRestrict(restrictx_array[fi],
RTx_array[lx], r_array[fi],
b_array[ci]);
}
restrict_count[ci]++;
}
}
if ((ly+1) < num_grids[1])
{
/* restrict to (lx, (ly+1), lz) */
hypre_SparseMSGMapIndex(lx, (ly+1), lz, num_grids, ci);
if (grid_on[ci])
{
if (restrict_count[ci])
{
hypre_SparseMSGRestrict(restricty_array[fi],
RTy_array[ly], r_array[fi],
t_array[ci]);
hypre_StructAxpy(1.0, t_array[ci], b_array[ci]);
}
else
{
hypre_SparseMSGRestrict(restricty_array[fi],
RTy_array[ly], r_array[fi],
b_array[ci]);
}
restrict_count[ci]++;
}
}
if ((lz+1) < num_grids[2])
{
/* restrict to (lx, ly, (lz+1)) */
hypre_SparseMSGMapIndex(lx, ly, (lz+1), num_grids, ci);
if (grid_on[ci])
{
if (restrict_count[ci])
{
hypre_SparseMSGRestrict(restrictz_array[fi],
RTz_array[lz], r_array[fi],
t_array[ci]);
hypre_StructAxpy(1.0, t_array[ci], b_array[ci]);
}
else
{
hypre_SparseMSGRestrict(restrictz_array[fi],
RTz_array[lz], r_array[fi],
b_array[ci]);
}
restrict_count[ci]++;
}
}
#if DEBUG
hypre_sprintf(filename, "zoutSMSG_bdown.%d.%d.%d", lx, ly, lz);
hypre_StructVectorPrint(filename, b_array[fi], 0);
hypre_sprintf(filename, "zoutSMSG_xdown.%d.%d.%d", lx, ly, lz);
hypre_StructVectorPrint(filename, x_array[fi], 0);
hypre_sprintf(filename, "zoutSMSG_rdown.%d.%d.%d", lx, ly, lz);
hypre_StructVectorPrint(filename, r_array[fi], 0);
#endif
}
}
}
/*--------------------------------------------------
* Bottom
*--------------------------------------------------*/
fi = num_all_grids - 1;
if (restrict_count[fi] > 1)
{
hypre_StructScale((1.0/restrict_count[fi]), b_array[fi]);
}
hypre_PFMGRelaxSetZeroGuess(relax_array[fi], 1);
hypre_PFMGRelax(relax_array[fi], A_array[fi], b_array[fi],
x_array[fi]);
#if DEBUG
hypre_sprintf(filename, "zoutSMSG_bbottom.%d.%d.%d", lx, ly, lz);
hypre_StructVectorPrint(filename, b_array[fi], 0);
hypre_sprintf(filename, "zoutSMSG_xbottom.%d.%d.%d", lx, ly, lz);
hypre_StructVectorPrint(filename, x_array[fi], 0);
#endif
/*--------------------------------------------------
* Up cycle
* Note that r = b = x through the jump region
*--------------------------------------------------*/
for (l = (num_levels - 2); l >= 0; l--)
{
lzmin = hypre_max((l - num_grids[1] - num_grids[0] + 2), 0);
lzmax = hypre_min((l), (num_grids[2] - 1));
for (lz = lzmax; lz >= lzmin; lz--)
{
lymin = hypre_max((l - lz - num_grids[0] + 1), 0);
lymax = hypre_min((l - lz), (num_grids[1] - 1));
for (ly = lymax; ly >= lymin; ly--)
{
lx = l - lz - ly;
hypre_SparseMSGMapIndex(lx, ly, lz, num_grids, fi);
if (!grid_on[fi])
{
break;
}
if ((l >= 1) && (l <= jump))
{
hypre_StructVectorSetConstantValues(x_array[fi], 0.0);
}
if ((lx+1) < num_grids[0])
{
/* interpolate from ((lx+1), ly, lz) */
hypre_SparseMSGMapIndex((lx+1), ly, lz, num_grids, ci);
if (grid_on[ci])
{
hypre_SparseMSGInterp(interpx_array[fi],
Px_array[lx], x_array[ci],
e_array[fi]);
hypre_SparseMSGFilter(visitx_array[fi], e_array[fi],
lx, ly, lz, jump);
hypre_StructAxpy(1.0, e_array[fi], x_array[fi]);
}
}
if ((ly+1) < num_grids[1])
{
/* interpolate from (lx, (ly+1), lz) */
hypre_SparseMSGMapIndex(lx, (ly+1), lz, num_grids, ci);
if (grid_on[ci])
{
hypre_SparseMSGInterp(interpy_array[fi],
Py_array[ly], x_array[ci],
e_array[fi]);
hypre_SparseMSGFilter(visity_array[fi], e_array[fi],
lx, ly, lz, jump);
hypre_StructAxpy(1.0, e_array[fi], x_array[fi]);
}
}
if ((lz+1) < num_grids[2])
{
/* interpolate from (lx, ly, (lz+1)) */
hypre_SparseMSGMapIndex(lx, ly, (lz+1), num_grids, ci);
if (grid_on[ci])
{
hypre_SparseMSGInterp(interpz_array[fi],
Pz_array[lz], x_array[ci],
e_array[fi]);
hypre_SparseMSGFilter(visitz_array[fi], e_array[fi],
lx, ly, lz, jump);
hypre_StructAxpy(1.0, e_array[fi], x_array[fi]);
}
}
#if DEBUG
hypre_sprintf(filename, "zoutSMSG_xup.%d.%d.%d", lx, ly, lz);
hypre_StructVectorPrint(filename, x_array[fi], 0);
#endif
if (l > jump)
{
/* post-relaxation */
hypre_PFMGRelaxSetPostRelax(relax_array[fi]);
hypre_PFMGRelaxSetMaxIter(relax_array[fi],
num_post_relax);
hypre_PFMGRelaxSetZeroGuess(relax_array[fi], 0);
hypre_PFMGRelax(relax_array[fi], A_array[fi], b_array[fi],
x_array[fi]);
}
}
}
}
}
/* part of convergence check */
if ((tol > 0.0) && (rel_change))
{
if (num_levels > 1)
{
e_dot_e = hypre_StructInnerProd(e_array[0], e_array[0]);
x_dot_x = hypre_StructInnerProd(x_array[0], x_array[0]);
}
else
{
e_dot_e = 0.0;
x_dot_x = 1.0;
}
}
/* fine grid post-relaxation */
hypre_PFMGRelaxSetPostRelax(relax_array[0]);
hypre_PFMGRelaxSetMaxIter(relax_array[0], num_fine_relax);
hypre_PFMGRelaxSetZeroGuess(relax_array[0], 0);
hypre_PFMGRelax(relax_array[0], A_array[0], b_array[0], x_array[0]);
(smsg_data -> num_iterations) = (i + 1);
}
hypre_EndTiming(smsg_data -> time_index);
return ierr;
}
