1 #include <../src/mat/impls/baij/seq/baij.h>
2 #include <petsc/private/kernels/blockinvert.h>
3
4 /* bs = 15 for PFLOTRAN. Block operations are done by accessing all the columns of the block at once */
5
MatSolve_SeqBAIJ_15_NaturalOrdering_ver2(Mat A,Vec bb,Vec xx)6 PetscErrorCode MatSolve_SeqBAIJ_15_NaturalOrdering_ver2(Mat A, Vec bb, Vec xx)
7 {
8 Mat_SeqBAIJ *a = (Mat_SeqBAIJ *)A->data;
9 const PetscInt n = a->mbs, *ai = a->i, *aj = a->j, *adiag = a->diag, *vi, bs = A->rmap->bs, bs2 = a->bs2;
10 PetscInt i, nz, idx, idt, m;
11 const MatScalar *aa = a->a, *v;
12 PetscScalar s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13, s14, s15;
13 PetscScalar x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15;
14 PetscScalar *x;
15 const PetscScalar *b;
16
17 PetscFunctionBegin;
18 PetscCall(VecGetArrayRead(bb, &b));
19 PetscCall(VecGetArray(xx, &x));
20
21 /* forward solve the lower triangular */
22 idx = 0;
23 x[0] = b[idx];
24 x[1] = b[1 + idx];
25 x[2] = b[2 + idx];
26 x[3] = b[3 + idx];
27 x[4] = b[4 + idx];
28 x[5] = b[5 + idx];
29 x[6] = b[6 + idx];
30 x[7] = b[7 + idx];
31 x[8] = b[8 + idx];
32 x[9] = b[9 + idx];
33 x[10] = b[10 + idx];
34 x[11] = b[11 + idx];
35 x[12] = b[12 + idx];
36 x[13] = b[13 + idx];
37 x[14] = b[14 + idx];
38
39 for (i = 1; i < n; i++) {
40 v = aa + bs2 * ai[i];
41 vi = aj + ai[i];
42 nz = ai[i + 1] - ai[i];
43 idt = bs * i;
44 s1 = b[idt];
45 s2 = b[1 + idt];
46 s3 = b[2 + idt];
47 s4 = b[3 + idt];
48 s5 = b[4 + idt];
49 s6 = b[5 + idt];
50 s7 = b[6 + idt];
51 s8 = b[7 + idt];
52 s9 = b[8 + idt];
53 s10 = b[9 + idt];
54 s11 = b[10 + idt];
55 s12 = b[11 + idt];
56 s13 = b[12 + idt];
57 s14 = b[13 + idt];
58 s15 = b[14 + idt];
59 for (m = 0; m < nz; m++) {
60 idx = bs * vi[m];
61 x1 = x[idx];
62 x2 = x[1 + idx];
63 x3 = x[2 + idx];
64 x4 = x[3 + idx];
65 x5 = x[4 + idx];
66 x6 = x[5 + idx];
67 x7 = x[6 + idx];
68 x8 = x[7 + idx];
69 x9 = x[8 + idx];
70 x10 = x[9 + idx];
71 x11 = x[10 + idx];
72 x12 = x[11 + idx];
73 x13 = x[12 + idx];
74 x14 = x[13 + idx];
75 x15 = x[14 + idx];
76
77 s1 -= v[0] * x1 + v[15] * x2 + v[30] * x3 + v[45] * x4 + v[60] * x5 + v[75] * x6 + v[90] * x7 + v[105] * x8 + v[120] * x9 + v[135] * x10 + v[150] * x11 + v[165] * x12 + v[180] * x13 + v[195] * x14 + v[210] * x15;
78 s2 -= v[1] * x1 + v[16] * x2 + v[31] * x3 + v[46] * x4 + v[61] * x5 + v[76] * x6 + v[91] * x7 + v[106] * x8 + v[121] * x9 + v[136] * x10 + v[151] * x11 + v[166] * x12 + v[181] * x13 + v[196] * x14 + v[211] * x15;
79 s3 -= v[2] * x1 + v[17] * x2 + v[32] * x3 + v[47] * x4 + v[62] * x5 + v[77] * x6 + v[92] * x7 + v[107] * x8 + v[122] * x9 + v[137] * x10 + v[152] * x11 + v[167] * x12 + v[182] * x13 + v[197] * x14 + v[212] * x15;
80 s4 -= v[3] * x1 + v[18] * x2 + v[33] * x3 + v[48] * x4 + v[63] * x5 + v[78] * x6 + v[93] * x7 + v[108] * x8 + v[123] * x9 + v[138] * x10 + v[153] * x11 + v[168] * x12 + v[183] * x13 + v[198] * x14 + v[213] * x15;
81 s5 -= v[4] * x1 + v[19] * x2 + v[34] * x3 + v[49] * x4 + v[64] * x5 + v[79] * x6 + v[94] * x7 + v[109] * x8 + v[124] * x9 + v[139] * x10 + v[154] * x11 + v[169] * x12 + v[184] * x13 + v[199] * x14 + v[214] * x15;
82 s6 -= v[5] * x1 + v[20] * x2 + v[35] * x3 + v[50] * x4 + v[65] * x5 + v[80] * x6 + v[95] * x7 + v[110] * x8 + v[125] * x9 + v[140] * x10 + v[155] * x11 + v[170] * x12 + v[185] * x13 + v[200] * x14 + v[215] * x15;
83 s7 -= v[6] * x1 + v[21] * x2 + v[36] * x3 + v[51] * x4 + v[66] * x5 + v[81] * x6 + v[96] * x7 + v[111] * x8 + v[126] * x9 + v[141] * x10 + v[156] * x11 + v[171] * x12 + v[186] * x13 + v[201] * x14 + v[216] * x15;
84 s8 -= v[7] * x1 + v[22] * x2 + v[37] * x3 + v[52] * x4 + v[67] * x5 + v[82] * x6 + v[97] * x7 + v[112] * x8 + v[127] * x9 + v[142] * x10 + v[157] * x11 + v[172] * x12 + v[187] * x13 + v[202] * x14 + v[217] * x15;
85 s9 -= v[8] * x1 + v[23] * x2 + v[38] * x3 + v[53] * x4 + v[68] * x5 + v[83] * x6 + v[98] * x7 + v[113] * x8 + v[128] * x9 + v[143] * x10 + v[158] * x11 + v[173] * x12 + v[188] * x13 + v[203] * x14 + v[218] * x15;
86 s10 -= v[9] * x1 + v[24] * x2 + v[39] * x3 + v[54] * x4 + v[69] * x5 + v[84] * x6 + v[99] * x7 + v[114] * x8 + v[129] * x9 + v[144] * x10 + v[159] * x11 + v[174] * x12 + v[189] * x13 + v[204] * x14 + v[219] * x15;
87 s11 -= v[10] * x1 + v[25] * x2 + v[40] * x3 + v[55] * x4 + v[70] * x5 + v[85] * x6 + v[100] * x7 + v[115] * x8 + v[130] * x9 + v[145] * x10 + v[160] * x11 + v[175] * x12 + v[190] * x13 + v[205] * x14 + v[220] * x15;
88 s12 -= v[11] * x1 + v[26] * x2 + v[41] * x3 + v[56] * x4 + v[71] * x5 + v[86] * x6 + v[101] * x7 + v[116] * x8 + v[131] * x9 + v[146] * x10 + v[161] * x11 + v[176] * x12 + v[191] * x13 + v[206] * x14 + v[221] * x15;
89 s13 -= v[12] * x1 + v[27] * x2 + v[42] * x3 + v[57] * x4 + v[72] * x5 + v[87] * x6 + v[102] * x7 + v[117] * x8 + v[132] * x9 + v[147] * x10 + v[162] * x11 + v[177] * x12 + v[192] * x13 + v[207] * x14 + v[222] * x15;
90 s14 -= v[13] * x1 + v[28] * x2 + v[43] * x3 + v[58] * x4 + v[73] * x5 + v[88] * x6 + v[103] * x7 + v[118] * x8 + v[133] * x9 + v[148] * x10 + v[163] * x11 + v[178] * x12 + v[193] * x13 + v[208] * x14 + v[223] * x15;
91 s15 -= v[14] * x1 + v[29] * x2 + v[44] * x3 + v[59] * x4 + v[74] * x5 + v[89] * x6 + v[104] * x7 + v[119] * x8 + v[134] * x9 + v[149] * x10 + v[164] * x11 + v[179] * x12 + v[194] * x13 + v[209] * x14 + v[224] * x15;
92
93 v += bs2;
94 }
95 x[idt] = s1;
96 x[1 + idt] = s2;
97 x[2 + idt] = s3;
98 x[3 + idt] = s4;
99 x[4 + idt] = s5;
100 x[5 + idt] = s6;
101 x[6 + idt] = s7;
102 x[7 + idt] = s8;
103 x[8 + idt] = s9;
104 x[9 + idt] = s10;
105 x[10 + idt] = s11;
106 x[11 + idt] = s12;
107 x[12 + idt] = s13;
108 x[13 + idt] = s14;
109 x[14 + idt] = s15;
110 }
111 /* backward solve the upper triangular */
112 for (i = n - 1; i >= 0; i--) {
113 v = aa + bs2 * (adiag[i + 1] + 1);
114 vi = aj + adiag[i + 1] + 1;
115 nz = adiag[i] - adiag[i + 1] - 1;
116 idt = bs * i;
117 s1 = x[idt];
118 s2 = x[1 + idt];
119 s3 = x[2 + idt];
120 s4 = x[3 + idt];
121 s5 = x[4 + idt];
122 s6 = x[5 + idt];
123 s7 = x[6 + idt];
124 s8 = x[7 + idt];
125 s9 = x[8 + idt];
126 s10 = x[9 + idt];
127 s11 = x[10 + idt];
128 s12 = x[11 + idt];
129 s13 = x[12 + idt];
130 s14 = x[13 + idt];
131 s15 = x[14 + idt];
132
133 for (m = 0; m < nz; m++) {
134 idx = bs * vi[m];
135 x1 = x[idx];
136 x2 = x[1 + idx];
137 x3 = x[2 + idx];
138 x4 = x[3 + idx];
139 x5 = x[4 + idx];
140 x6 = x[5 + idx];
141 x7 = x[6 + idx];
142 x8 = x[7 + idx];
143 x9 = x[8 + idx];
144 x10 = x[9 + idx];
145 x11 = x[10 + idx];
146 x12 = x[11 + idx];
147 x13 = x[12 + idx];
148 x14 = x[13 + idx];
149 x15 = x[14 + idx];
150
151 s1 -= v[0] * x1 + v[15] * x2 + v[30] * x3 + v[45] * x4 + v[60] * x5 + v[75] * x6 + v[90] * x7 + v[105] * x8 + v[120] * x9 + v[135] * x10 + v[150] * x11 + v[165] * x12 + v[180] * x13 + v[195] * x14 + v[210] * x15;
152 s2 -= v[1] * x1 + v[16] * x2 + v[31] * x3 + v[46] * x4 + v[61] * x5 + v[76] * x6 + v[91] * x7 + v[106] * x8 + v[121] * x9 + v[136] * x10 + v[151] * x11 + v[166] * x12 + v[181] * x13 + v[196] * x14 + v[211] * x15;
153 s3 -= v[2] * x1 + v[17] * x2 + v[32] * x3 + v[47] * x4 + v[62] * x5 + v[77] * x6 + v[92] * x7 + v[107] * x8 + v[122] * x9 + v[137] * x10 + v[152] * x11 + v[167] * x12 + v[182] * x13 + v[197] * x14 + v[212] * x15;
154 s4 -= v[3] * x1 + v[18] * x2 + v[33] * x3 + v[48] * x4 + v[63] * x5 + v[78] * x6 + v[93] * x7 + v[108] * x8 + v[123] * x9 + v[138] * x10 + v[153] * x11 + v[168] * x12 + v[183] * x13 + v[198] * x14 + v[213] * x15;
155 s5 -= v[4] * x1 + v[19] * x2 + v[34] * x3 + v[49] * x4 + v[64] * x5 + v[79] * x6 + v[94] * x7 + v[109] * x8 + v[124] * x9 + v[139] * x10 + v[154] * x11 + v[169] * x12 + v[184] * x13 + v[199] * x14 + v[214] * x15;
156 s6 -= v[5] * x1 + v[20] * x2 + v[35] * x3 + v[50] * x4 + v[65] * x5 + v[80] * x6 + v[95] * x7 + v[110] * x8 + v[125] * x9 + v[140] * x10 + v[155] * x11 + v[170] * x12 + v[185] * x13 + v[200] * x14 + v[215] * x15;
157 s7 -= v[6] * x1 + v[21] * x2 + v[36] * x3 + v[51] * x4 + v[66] * x5 + v[81] * x6 + v[96] * x7 + v[111] * x8 + v[126] * x9 + v[141] * x10 + v[156] * x11 + v[171] * x12 + v[186] * x13 + v[201] * x14 + v[216] * x15;
158 s8 -= v[7] * x1 + v[22] * x2 + v[37] * x3 + v[52] * x4 + v[67] * x5 + v[82] * x6 + v[97] * x7 + v[112] * x8 + v[127] * x9 + v[142] * x10 + v[157] * x11 + v[172] * x12 + v[187] * x13 + v[202] * x14 + v[217] * x15;
159 s9 -= v[8] * x1 + v[23] * x2 + v[38] * x3 + v[53] * x4 + v[68] * x5 + v[83] * x6 + v[98] * x7 + v[113] * x8 + v[128] * x9 + v[143] * x10 + v[158] * x11 + v[173] * x12 + v[188] * x13 + v[203] * x14 + v[218] * x15;
160 s10 -= v[9] * x1 + v[24] * x2 + v[39] * x3 + v[54] * x4 + v[69] * x5 + v[84] * x6 + v[99] * x7 + v[114] * x8 + v[129] * x9 + v[144] * x10 + v[159] * x11 + v[174] * x12 + v[189] * x13 + v[204] * x14 + v[219] * x15;
161 s11 -= v[10] * x1 + v[25] * x2 + v[40] * x3 + v[55] * x4 + v[70] * x5 + v[85] * x6 + v[100] * x7 + v[115] * x8 + v[130] * x9 + v[145] * x10 + v[160] * x11 + v[175] * x12 + v[190] * x13 + v[205] * x14 + v[220] * x15;
162 s12 -= v[11] * x1 + v[26] * x2 + v[41] * x3 + v[56] * x4 + v[71] * x5 + v[86] * x6 + v[101] * x7 + v[116] * x8 + v[131] * x9 + v[146] * x10 + v[161] * x11 + v[176] * x12 + v[191] * x13 + v[206] * x14 + v[221] * x15;
163 s13 -= v[12] * x1 + v[27] * x2 + v[42] * x3 + v[57] * x4 + v[72] * x5 + v[87] * x6 + v[102] * x7 + v[117] * x8 + v[132] * x9 + v[147] * x10 + v[162] * x11 + v[177] * x12 + v[192] * x13 + v[207] * x14 + v[222] * x15;
164 s14 -= v[13] * x1 + v[28] * x2 + v[43] * x3 + v[58] * x4 + v[73] * x5 + v[88] * x6 + v[103] * x7 + v[118] * x8 + v[133] * x9 + v[148] * x10 + v[163] * x11 + v[178] * x12 + v[193] * x13 + v[208] * x14 + v[223] * x15;
165 s15 -= v[14] * x1 + v[29] * x2 + v[44] * x3 + v[59] * x4 + v[74] * x5 + v[89] * x6 + v[104] * x7 + v[119] * x8 + v[134] * x9 + v[149] * x10 + v[164] * x11 + v[179] * x12 + v[194] * x13 + v[209] * x14 + v[224] * x15;
166
167 v += bs2;
168 }
169
170 x[idt] = v[0] * s1 + v[15] * s2 + v[30] * s3 + v[45] * s4 + v[60] * s5 + v[75] * s6 + v[90] * s7 + v[105] * s8 + v[120] * s9 + v[135] * s10 + v[150] * s11 + v[165] * s12 + v[180] * s13 + v[195] * s14 + v[210] * s15;
171 x[1 + idt] = v[1] * s1 + v[16] * s2 + v[31] * s3 + v[46] * s4 + v[61] * s5 + v[76] * s6 + v[91] * s7 + v[106] * s8 + v[121] * s9 + v[136] * s10 + v[151] * s11 + v[166] * s12 + v[181] * s13 + v[196] * s14 + v[211] * s15;
172 x[2 + idt] = v[2] * s1 + v[17] * s2 + v[32] * s3 + v[47] * s4 + v[62] * s5 + v[77] * s6 + v[92] * s7 + v[107] * s8 + v[122] * s9 + v[137] * s10 + v[152] * s11 + v[167] * s12 + v[182] * s13 + v[197] * s14 + v[212] * s15;
173 x[3 + idt] = v[3] * s1 + v[18] * s2 + v[33] * s3 + v[48] * s4 + v[63] * s5 + v[78] * s6 + v[93] * s7 + v[108] * s8 + v[123] * s9 + v[138] * s10 + v[153] * s11 + v[168] * s12 + v[183] * s13 + v[198] * s14 + v[213] * s15;
174 x[4 + idt] = v[4] * s1 + v[19] * s2 + v[34] * s3 + v[49] * s4 + v[64] * s5 + v[79] * s6 + v[94] * s7 + v[109] * s8 + v[124] * s9 + v[139] * s10 + v[154] * s11 + v[169] * s12 + v[184] * s13 + v[199] * s14 + v[214] * s15;
175 x[5 + idt] = v[5] * s1 + v[20] * s2 + v[35] * s3 + v[50] * s4 + v[65] * s5 + v[80] * s6 + v[95] * s7 + v[110] * s8 + v[125] * s9 + v[140] * s10 + v[155] * s11 + v[170] * s12 + v[185] * s13 + v[200] * s14 + v[215] * s15;
176 x[6 + idt] = v[6] * s1 + v[21] * s2 + v[36] * s3 + v[51] * s4 + v[66] * s5 + v[81] * s6 + v[96] * s7 + v[111] * s8 + v[126] * s9 + v[141] * s10 + v[156] * s11 + v[171] * s12 + v[186] * s13 + v[201] * s14 + v[216] * s15;
177 x[7 + idt] = v[7] * s1 + v[22] * s2 + v[37] * s3 + v[52] * s4 + v[67] * s5 + v[82] * s6 + v[97] * s7 + v[112] * s8 + v[127] * s9 + v[142] * s10 + v[157] * s11 + v[172] * s12 + v[187] * s13 + v[202] * s14 + v[217] * s15;
178 x[8 + idt] = v[8] * s1 + v[23] * s2 + v[38] * s3 + v[53] * s4 + v[68] * s5 + v[83] * s6 + v[98] * s7 + v[113] * s8 + v[128] * s9 + v[143] * s10 + v[158] * s11 + v[173] * s12 + v[188] * s13 + v[203] * s14 + v[218] * s15;
179 x[9 + idt] = v[9] * s1 + v[24] * s2 + v[39] * s3 + v[54] * s4 + v[69] * s5 + v[84] * s6 + v[99] * s7 + v[114] * s8 + v[129] * s9 + v[144] * s10 + v[159] * s11 + v[174] * s12 + v[189] * s13 + v[204] * s14 + v[219] * s15;
180 x[10 + idt] = v[10] * s1 + v[25] * s2 + v[40] * s3 + v[55] * s4 + v[70] * s5 + v[85] * s6 + v[100] * s7 + v[115] * s8 + v[130] * s9 + v[145] * s10 + v[160] * s11 + v[175] * s12 + v[190] * s13 + v[205] * s14 + v[220] * s15;
181 x[11 + idt] = v[11] * s1 + v[26] * s2 + v[41] * s3 + v[56] * s4 + v[71] * s5 + v[86] * s6 + v[101] * s7 + v[116] * s8 + v[131] * s9 + v[146] * s10 + v[161] * s11 + v[176] * s12 + v[191] * s13 + v[206] * s14 + v[221] * s15;
182 x[12 + idt] = v[12] * s1 + v[27] * s2 + v[42] * s3 + v[57] * s4 + v[72] * s5 + v[87] * s6 + v[102] * s7 + v[117] * s8 + v[132] * s9 + v[147] * s10 + v[162] * s11 + v[177] * s12 + v[192] * s13 + v[207] * s14 + v[222] * s15;
183 x[13 + idt] = v[13] * s1 + v[28] * s2 + v[43] * s3 + v[58] * s4 + v[73] * s5 + v[88] * s6 + v[103] * s7 + v[118] * s8 + v[133] * s9 + v[148] * s10 + v[163] * s11 + v[178] * s12 + v[193] * s13 + v[208] * s14 + v[223] * s15;
184 x[14 + idt] = v[14] * s1 + v[29] * s2 + v[44] * s3 + v[59] * s4 + v[74] * s5 + v[89] * s6 + v[104] * s7 + v[119] * s8 + v[134] * s9 + v[149] * s10 + v[164] * s11 + v[179] * s12 + v[194] * s13 + v[209] * s14 + v[224] * s15;
185 }
186
187 PetscCall(VecRestoreArrayRead(bb, &b));
188 PetscCall(VecRestoreArray(xx, &x));
189 PetscCall(PetscLogFlops(2.0 * bs2 * (a->nz) - bs * A->cmap->n));
190 PetscFunctionReturn(PETSC_SUCCESS);
191 }
192
193 /* bs = 15 for PFLOTRAN. Block operations are done by accessing one column at a time */
194 /* Default MatSolve for block size 15 */
195
MatSolve_SeqBAIJ_15_NaturalOrdering_ver1(Mat A,Vec bb,Vec xx)196 PetscErrorCode MatSolve_SeqBAIJ_15_NaturalOrdering_ver1(Mat A, Vec bb, Vec xx)
197 {
198 Mat_SeqBAIJ *a = (Mat_SeqBAIJ *)A->data;
199 const PetscInt n = a->mbs, *ai = a->i, *aj = a->j, *adiag = a->diag, *vi, bs = A->rmap->bs, bs2 = a->bs2;
200 PetscInt i, k, nz, idx, idt, m;
201 const MatScalar *aa = a->a, *v;
202 PetscScalar s[15];
203 PetscScalar *x, xv;
204 const PetscScalar *b;
205
206 PetscFunctionBegin;
207 PetscCall(VecGetArrayRead(bb, &b));
208 PetscCall(VecGetArray(xx, &x));
209
210 /* forward solve the lower triangular */
211 for (i = 0; i < n; i++) {
212 v = aa + bs2 * ai[i];
213 vi = aj + ai[i];
214 nz = ai[i + 1] - ai[i];
215 idt = bs * i;
216 x[idt] = b[idt];
217 x[1 + idt] = b[1 + idt];
218 x[2 + idt] = b[2 + idt];
219 x[3 + idt] = b[3 + idt];
220 x[4 + idt] = b[4 + idt];
221 x[5 + idt] = b[5 + idt];
222 x[6 + idt] = b[6 + idt];
223 x[7 + idt] = b[7 + idt];
224 x[8 + idt] = b[8 + idt];
225 x[9 + idt] = b[9 + idt];
226 x[10 + idt] = b[10 + idt];
227 x[11 + idt] = b[11 + idt];
228 x[12 + idt] = b[12 + idt];
229 x[13 + idt] = b[13 + idt];
230 x[14 + idt] = b[14 + idt];
231 for (m = 0; m < nz; m++) {
232 idx = bs * vi[m];
233 for (k = 0; k < 15; k++) {
234 xv = x[k + idx];
235 x[idt] -= v[0] * xv;
236 x[1 + idt] -= v[1] * xv;
237 x[2 + idt] -= v[2] * xv;
238 x[3 + idt] -= v[3] * xv;
239 x[4 + idt] -= v[4] * xv;
240 x[5 + idt] -= v[5] * xv;
241 x[6 + idt] -= v[6] * xv;
242 x[7 + idt] -= v[7] * xv;
243 x[8 + idt] -= v[8] * xv;
244 x[9 + idt] -= v[9] * xv;
245 x[10 + idt] -= v[10] * xv;
246 x[11 + idt] -= v[11] * xv;
247 x[12 + idt] -= v[12] * xv;
248 x[13 + idt] -= v[13] * xv;
249 x[14 + idt] -= v[14] * xv;
250 v += 15;
251 }
252 }
253 }
254 /* backward solve the upper triangular */
255 for (i = n - 1; i >= 0; i--) {
256 v = aa + bs2 * (adiag[i + 1] + 1);
257 vi = aj + adiag[i + 1] + 1;
258 nz = adiag[i] - adiag[i + 1] - 1;
259 idt = bs * i;
260 s[0] = x[idt];
261 s[1] = x[1 + idt];
262 s[2] = x[2 + idt];
263 s[3] = x[3 + idt];
264 s[4] = x[4 + idt];
265 s[5] = x[5 + idt];
266 s[6] = x[6 + idt];
267 s[7] = x[7 + idt];
268 s[8] = x[8 + idt];
269 s[9] = x[9 + idt];
270 s[10] = x[10 + idt];
271 s[11] = x[11 + idt];
272 s[12] = x[12 + idt];
273 s[13] = x[13 + idt];
274 s[14] = x[14 + idt];
275
276 for (m = 0; m < nz; m++) {
277 idx = bs * vi[m];
278 for (k = 0; k < 15; k++) {
279 xv = x[k + idx];
280 s[0] -= v[0] * xv;
281 s[1] -= v[1] * xv;
282 s[2] -= v[2] * xv;
283 s[3] -= v[3] * xv;
284 s[4] -= v[4] * xv;
285 s[5] -= v[5] * xv;
286 s[6] -= v[6] * xv;
287 s[7] -= v[7] * xv;
288 s[8] -= v[8] * xv;
289 s[9] -= v[9] * xv;
290 s[10] -= v[10] * xv;
291 s[11] -= v[11] * xv;
292 s[12] -= v[12] * xv;
293 s[13] -= v[13] * xv;
294 s[14] -= v[14] * xv;
295 v += 15;
296 }
297 }
298 PetscCall(PetscArrayzero(x + idt, bs));
299 for (k = 0; k < 15; k++) {
300 x[idt] += v[0] * s[k];
301 x[1 + idt] += v[1] * s[k];
302 x[2 + idt] += v[2] * s[k];
303 x[3 + idt] += v[3] * s[k];
304 x[4 + idt] += v[4] * s[k];
305 x[5 + idt] += v[5] * s[k];
306 x[6 + idt] += v[6] * s[k];
307 x[7 + idt] += v[7] * s[k];
308 x[8 + idt] += v[8] * s[k];
309 x[9 + idt] += v[9] * s[k];
310 x[10 + idt] += v[10] * s[k];
311 x[11 + idt] += v[11] * s[k];
312 x[12 + idt] += v[12] * s[k];
313 x[13 + idt] += v[13] * s[k];
314 x[14 + idt] += v[14] * s[k];
315 v += 15;
316 }
317 }
318 PetscCall(VecRestoreArrayRead(bb, &b));
319 PetscCall(VecRestoreArray(xx, &x));
320 PetscCall(PetscLogFlops(2.0 * bs2 * (a->nz) - bs * A->cmap->n));
321 PetscFunctionReturn(PETSC_SUCCESS);
322 }
323