Actual source code: sbaijfact11.c
petsc-3.11.4 2019-09-28
2: #include <../src/mat/impls/sbaij/seq/sbaij.h>
3: #include <petsc/private/kernels/blockinvert.h>
5: /* Version for when blocks are 7 by 7 */
6: PetscErrorCode MatCholeskyFactorNumeric_SeqSBAIJ_7(Mat C,Mat A,const MatFactorInfo *info)
7: {
8: Mat_SeqSBAIJ *a = (Mat_SeqSBAIJ*)A->data,*b = (Mat_SeqSBAIJ*)C->data;
9: IS perm = b->row;
11: const PetscInt *ai,*aj,*perm_ptr,*bi=b->i,*bj=b->j;
12: PetscInt *a2anew,k,k1,jmin,jmax,*jl,*il,vj,nexti,ili,i,j,mbs=a->mbs;
13: MatScalar *ba = b->a,*aa,*ap,*dk,*uik;
14: MatScalar *u,*d,*w,*wp,u0,u1,u2,u3,u4,u5,u6,u7,u8,u9,u10,u11,u12;
15: MatScalar u13,u14,u15,u16,u17,u18,u19,u20,u21,u22,u23,u24,u25,u26,u27;
16: MatScalar u28,u29,u30,u31,u32,u33,u34,u35,u36,u37,u38,u39,u40,u41;
17: MatScalar u42,u43,u44,u45,u46,u47,u48;
18: PetscReal shift = info->shiftamount;
19: PetscBool allowzeropivot,zeropivotdetected;
22: /* initialization */
23: allowzeropivot = PetscNot(A->erroriffailure);
24: PetscCalloc1(49*mbs,&w);
25: PetscMalloc2(mbs,&il,mbs,&jl);
26: il[0] = 0;
27: for (i=0; i<mbs; i++) jl[i] = mbs;
28:
29: PetscMalloc2(49,&dk,49,&uik);
30: ISGetIndices(perm,&perm_ptr);
32: /* check permutation */
33: if (!a->permute) {
34: ai = a->i; aj = a->j; aa = a->a;
35: } else {
36: ai = a->inew; aj = a->jnew;
37: PetscMalloc1(49*ai[mbs],&aa);
38: PetscMemcpy(aa,a->a,49*ai[mbs]*sizeof(MatScalar));
39: PetscMalloc1(ai[mbs],&a2anew);
40: PetscMemcpy(a2anew,a->a2anew,(ai[mbs])*sizeof(PetscInt));
42: for (i=0; i<mbs; i++) {
43: jmin = ai[i]; jmax = ai[i+1];
44: for (j=jmin; j<jmax; j++) {
45: while (a2anew[j] != j) {
46: k = a2anew[j]; a2anew[j] = a2anew[k]; a2anew[k] = k;
47: for (k1=0; k1<49; k1++) {
48: dk[k1] = aa[k*49+k1];
49: aa[k*49+k1] = aa[j*49+k1];
50: aa[j*49+k1] = dk[k1];
51: }
52: }
53: /* transform columnoriented blocks that lie in the lower triangle to roworiented blocks */
54: if (i > aj[j]) {
55: /* printf("change orientation, row: %d, col: %d\n",i,aj[j]); */
56: ap = aa + j*49; /* ptr to the beginning of j-th block of aa */
57: for (k=0; k<49; k++) dk[k] = ap[k]; /* dk <- j-th block of aa */
58: for (k=0; k<7; k++) { /* j-th block of aa <- dk^T */
59: for (k1=0; k1<7; k1++) *ap++ = dk[k + 7*k1];
60: }
61: }
62: }
63: }
64: PetscFree(a2anew);
65: }
67: /* for each row k */
68: for (k = 0; k<mbs; k++) {
70: /*initialize k-th row with elements nonzero in row perm(k) of A */
71: jmin = ai[perm_ptr[k]]; jmax = ai[perm_ptr[k]+1];
72: if (jmin < jmax) {
73: ap = aa + jmin*49;
74: for (j = jmin; j < jmax; j++) {
75: vj = perm_ptr[aj[j]]; /* block col. index */
76: wp = w + vj*49;
77: for (i=0; i<49; i++) *wp++ = *ap++;
78: }
79: }
81: /* modify k-th row by adding in those rows i with U(i,k) != 0 */
82: PetscMemcpy(dk,w+k*49,49*sizeof(MatScalar));
83: i = jl[k]; /* first row to be added to k_th row */
85: while (i < mbs) {
86: nexti = jl[i]; /* next row to be added to k_th row */
88: /* compute multiplier */
89: ili = il[i]; /* index of first nonzero element in U(i,k:bms-1) */
91: /* uik = -inv(Di)*U_bar(i,k) */
92: d = ba + i*49;
93: u = ba + ili*49;
95: u0 = u[0]; u1 = u[1]; u2 = u[2]; u3 = u[3]; u4 = u[4]; u5 = u[5]; u6 = u[6];
96: u7 = u[7]; u8 = u[8]; u9 = u[9]; u10 = u[10]; u11 = u[11]; u12 = u[12]; u13 = u[13];
97: u14 = u[14]; u15 = u[15]; u16 = u[16]; u17 = u[17]; u18 = u[18]; u19 = u[19]; u20 = u[20];
98: u21 = u[21]; u22 = u[22]; u23 = u[23]; u24 = u[24]; u25 = u[25]; u26 = u[26]; u27 = u[27];
99: u28 = u[28]; u29 = u[29]; u30 = u[30]; u31 = u[31]; u32 = u[32]; u33 = u[33]; u34 = u[34];
100: u35 = u[35]; u36 = u[36]; u37 = u[37]; u38 = u[38]; u39 = u[39]; u40 = u[40]; u41 = u[41]; u42 = u[42];
101: u43 = u[43]; u44 = u[44]; u45 = u[45]; u46 = u[46]; u47 = u[47]; u48 = u[48];
103: uik[0] = -(d[0]*u0 + d[7]*u1+ d[14]*u2+ d[21]*u3+ d[28]*u4+ d[35]*u5+ d[42]*u6);
104: uik[1] = -(d[1]*u0 + d[8]*u1+ d[15]*u2+ d[22]*u3+ d[29]*u4+ d[36]*u5+ d[43]*u6);
105: uik[2] = -(d[2]*u0 + d[9]*u1+ d[16]*u2+ d[23]*u3+ d[30]*u4+ d[37]*u5+ d[44]*u6);
106: uik[3] = -(d[3]*u0+ d[10]*u1+ d[17]*u2+ d[24]*u3+ d[31]*u4+ d[38]*u5+ d[45]*u6);
107: uik[4] = -(d[4]*u0+ d[11]*u1+ d[18]*u2+ d[25]*u3+ d[32]*u4+ d[39]*u5+ d[46]*u6);
108: uik[5] = -(d[5]*u0+ d[12]*u1+ d[19]*u2+ d[26]*u3+ d[33]*u4+ d[40]*u5+ d[47]*u6);
109: uik[6] = -(d[6]*u0+ d[13]*u1+ d[20]*u2+ d[27]*u3+ d[34]*u4+ d[41]*u5+ d[48]*u6);
111: uik[7] = -(d[0]*u7 + d[7]*u8+ d[14]*u9+ d[21]*u10+ d[28]*u11+ d[35]*u12+ d[42]*u13);
112: uik[8] = -(d[1]*u7 + d[8]*u8+ d[15]*u9+ d[22]*u10+ d[29]*u11+ d[36]*u12+ d[43]*u13);
113: uik[9] = -(d[2]*u7 + d[9]*u8+ d[16]*u9+ d[23]*u10+ d[30]*u11+ d[37]*u12+ d[44]*u13);
114: uik[10]= -(d[3]*u7+ d[10]*u8+ d[17]*u9+ d[24]*u10+ d[31]*u11+ d[38]*u12+ d[45]*u13);
115: uik[11]= -(d[4]*u7+ d[11]*u8+ d[18]*u9+ d[25]*u10+ d[32]*u11+ d[39]*u12+ d[46]*u13);
116: uik[12]= -(d[5]*u7+ d[12]*u8+ d[19]*u9+ d[26]*u10+ d[33]*u11+ d[40]*u12+ d[47]*u13);
117: uik[13]= -(d[6]*u7+ d[13]*u8+ d[20]*u9+ d[27]*u10+ d[34]*u11+ d[41]*u12+ d[48]*u13);
119: uik[14]= -(d[0]*u14 + d[7]*u15+ d[14]*u16+ d[21]*u17+ d[28]*u18+ d[35]*u19+ d[42]*u20);
120: uik[15]= -(d[1]*u14 + d[8]*u15+ d[15]*u16+ d[22]*u17+ d[29]*u18+ d[36]*u19+ d[43]*u20);
121: uik[16]= -(d[2]*u14 + d[9]*u15+ d[16]*u16+ d[23]*u17+ d[30]*u18+ d[37]*u19+ d[44]*u20);
122: uik[17]= -(d[3]*u14+ d[10]*u15+ d[17]*u16+ d[24]*u17+ d[31]*u18+ d[38]*u19+ d[45]*u20);
123: uik[18]= -(d[4]*u14+ d[11]*u15+ d[18]*u16+ d[25]*u17+ d[32]*u18+ d[39]*u19+ d[46]*u20);
124: uik[19]= -(d[5]*u14+ d[12]*u15+ d[19]*u16+ d[26]*u17+ d[33]*u18+ d[40]*u19+ d[47]*u20);
125: uik[20]= -(d[6]*u14+ d[13]*u15+ d[20]*u16+ d[27]*u17+ d[34]*u18+ d[41]*u19+ d[48]*u20);
127: uik[21]= -(d[0]*u21 + d[7]*u22+ d[14]*u23+ d[21]*u24+ d[28]*u25+ d[35]*u26+ d[42]*u27);
128: uik[22]= -(d[1]*u21 + d[8]*u22+ d[15]*u23+ d[22]*u24+ d[29]*u25+ d[36]*u26+ d[43]*u27);
129: uik[23]= -(d[2]*u21 + d[9]*u22+ d[16]*u23+ d[23]*u24+ d[30]*u25+ d[37]*u26+ d[44]*u27);
130: uik[24]= -(d[3]*u21+ d[10]*u22+ d[17]*u23+ d[24]*u24+ d[31]*u25+ d[38]*u26+ d[45]*u27);
131: uik[25]= -(d[4]*u21+ d[11]*u22+ d[18]*u23+ d[25]*u24+ d[32]*u25+ d[39]*u26+ d[46]*u27);
132: uik[26]= -(d[5]*u21+ d[12]*u22+ d[19]*u23+ d[26]*u24+ d[33]*u25+ d[40]*u26+ d[47]*u27);
133: uik[27]= -(d[6]*u21+ d[13]*u22+ d[20]*u23+ d[27]*u24+ d[34]*u25+ d[41]*u26+ d[48]*u27);
135: uik[28]= -(d[0]*u28 + d[7]*u29+ d[14]*u30+ d[21]*u31+ d[28]*u32+ d[35]*u33+ d[42]*u34);
136: uik[29]= -(d[1]*u28 + d[8]*u29+ d[15]*u30+ d[22]*u31+ d[29]*u32+ d[36]*u33+ d[43]*u34);
137: uik[30]= -(d[2]*u28 + d[9]*u29+ d[16]*u30+ d[23]*u31+ d[30]*u32+ d[37]*u33+ d[44]*u34);
138: uik[31]= -(d[3]*u28+ d[10]*u29+ d[17]*u30+ d[24]*u31+ d[31]*u32+ d[38]*u33+ d[45]*u34);
139: uik[32]= -(d[4]*u28+ d[11]*u29+ d[18]*u30+ d[25]*u31+ d[32]*u32+ d[39]*u33+ d[46]*u34);
140: uik[33]= -(d[5]*u28+ d[12]*u29+ d[19]*u30+ d[26]*u31+ d[33]*u32+ d[40]*u33+ d[47]*u34);
141: uik[34]= -(d[6]*u28+ d[13]*u29+ d[20]*u30+ d[27]*u31+ d[34]*u32+ d[41]*u33+ d[48]*u34);
143: uik[35]= -(d[0]*u35 + d[7]*u36+ d[14]*u37+ d[21]*u38+ d[28]*u39+ d[35]*u40+ d[42]*u41);
144: uik[36]= -(d[1]*u35 + d[8]*u36+ d[15]*u37+ d[22]*u38+ d[29]*u39+ d[36]*u40+ d[43]*u41);
145: uik[37]= -(d[2]*u35 + d[9]*u36+ d[16]*u37+ d[23]*u38+ d[30]*u39+ d[37]*u40+ d[44]*u41);
146: uik[38]= -(d[3]*u35+ d[10]*u36+ d[17]*u37+ d[24]*u38+ d[31]*u39+ d[38]*u40+ d[45]*u41);
147: uik[39]= -(d[4]*u35+ d[11]*u36+ d[18]*u37+ d[25]*u38+ d[32]*u39+ d[39]*u40+ d[46]*u41);
148: uik[40]= -(d[5]*u35+ d[12]*u36+ d[19]*u37+ d[26]*u38+ d[33]*u39+ d[40]*u40+ d[47]*u41);
149: uik[41]= -(d[6]*u35+ d[13]*u36+ d[20]*u37+ d[27]*u38+ d[34]*u39+ d[41]*u40+ d[48]*u41);
151: uik[42]= -(d[0]*u42 + d[7]*u43+ d[14]*u44+ d[21]*u45+ d[28]*u46+ d[35]*u47+ d[42]*u48);
152: uik[43]= -(d[1]*u42 + d[8]*u43+ d[15]*u44+ d[22]*u45+ d[29]*u46+ d[36]*u47+ d[43]*u48);
153: uik[44]= -(d[2]*u42 + d[9]*u43+ d[16]*u44+ d[23]*u45+ d[30]*u46+ d[37]*u47+ d[44]*u48);
154: uik[45]= -(d[3]*u42+ d[10]*u43+ d[17]*u44+ d[24]*u45+ d[31]*u46+ d[38]*u47+ d[45]*u48);
155: uik[46]= -(d[4]*u42+ d[11]*u43+ d[18]*u44+ d[25]*u45+ d[32]*u46+ d[39]*u47+ d[46]*u48);
156: uik[47]= -(d[5]*u42+ d[12]*u43+ d[19]*u44+ d[26]*u45+ d[33]*u46+ d[40]*u47+ d[47]*u48);
157: uik[48]= -(d[6]*u42+ d[13]*u43+ d[20]*u44+ d[27]*u45+ d[34]*u46+ d[41]*u47+ d[48]*u48);
159: /* update D(k) += -U(i,k)^T * U_bar(i,k) */
160: dk[0]+= uik[0]*u0 + uik[1]*u1 + uik[2]*u2 + uik[3]*u3 + uik[4]*u4 + uik[5]*u5 + uik[6]*u6;
161: dk[1]+= uik[7]*u0 + uik[8]*u1 + uik[9]*u2+ uik[10]*u3+ uik[11]*u4+ uik[12]*u5+ uik[13]*u6;
162: dk[2]+= uik[14]*u0+ uik[15]*u1+ uik[16]*u2+ uik[17]*u3+ uik[18]*u4+ uik[19]*u5+ uik[20]*u6;
163: dk[3]+= uik[21]*u0+ uik[22]*u1+ uik[23]*u2+ uik[24]*u3+ uik[25]*u4+ uik[26]*u5+ uik[27]*u6;
164: dk[4]+= uik[28]*u0+ uik[29]*u1+ uik[30]*u2+ uik[31]*u3+ uik[32]*u4+ uik[33]*u5+ uik[34]*u6;
165: dk[5]+= uik[35]*u0+ uik[36]*u1+ uik[37]*u2+ uik[38]*u3+ uik[39]*u4+ uik[40]*u5+ uik[41]*u6;
166: dk[6]+= uik[42]*u0+ uik[43]*u1+ uik[44]*u2+ uik[45]*u3+ uik[46]*u4+ uik[47]*u5+ uik[48]*u6;
168: dk[7] += uik[0]*u7 + uik[1]*u8 + uik[2]*u9 + uik[3]*u10 + uik[4]*u11 + uik[5]*u12 + uik[6]*u13;
169: dk[8] += uik[7]*u7 + uik[8]*u8 + uik[9]*u9+ uik[10]*u10+ uik[11]*u11+ uik[12]*u12+ uik[13]*u13;
170: dk[9] +=uik[14]*u7+ uik[15]*u8+ uik[16]*u9+ uik[17]*u10+ uik[18]*u11+ uik[19]*u12+ uik[20]*u13;
171: dk[10]+=uik[21]*u7+ uik[22]*u8+ uik[23]*u9+ uik[24]*u10+ uik[25]*u11+ uik[26]*u12+ uik[27]*u13;
172: dk[11]+=uik[28]*u7+ uik[29]*u8+ uik[30]*u9+ uik[31]*u10+ uik[32]*u11+ uik[33]*u12+ uik[34]*u13;
173: dk[12]+=uik[35]*u7+ uik[36]*u8+ uik[37]*u9+ uik[38]*u10+ uik[39]*u11+ uik[40]*u12+ uik[41]*u13;
174: dk[13]+=uik[42]*u7+ uik[43]*u8+ uik[44]*u9+ uik[45]*u10+ uik[46]*u11+ uik[47]*u12+ uik[48]*u13;
176: dk[14]+= uik[0]*u14 + uik[1]*u15 + uik[2]*u16 + uik[3]*u17 + uik[4]*u18 + uik[5]*u19 + uik[6]*u20;
177: dk[15]+= uik[7]*u14 + uik[8]*u15 + uik[9]*u16+ uik[10]*u17+ uik[11]*u18+ uik[12]*u19+ uik[13]*u20;
178: dk[16]+= uik[14]*u14+ uik[15]*u15+ uik[16]*u16+ uik[17]*u17+ uik[18]*u18+ uik[19]*u19+ uik[20]*u20;
179: dk[17]+= uik[21]*u14+ uik[22]*u15+ uik[23]*u16+ uik[24]*u17+ uik[25]*u18+ uik[26]*u19+ uik[27]*u20;
180: dk[18]+= uik[28]*u14+ uik[29]*u15+ uik[30]*u16+ uik[31]*u17+ uik[32]*u18+ uik[33]*u19+ uik[34]*u20;
181: dk[19]+= uik[35]*u14+ uik[36]*u15+ uik[37]*u16+ uik[38]*u17+ uik[39]*u18+ uik[40]*u19+ uik[41]*u20;
182: dk[20]+= uik[42]*u14+ uik[43]*u15+ uik[44]*u16+ uik[45]*u17+ uik[46]*u18+ uik[47]*u19+ uik[48]*u20;
184: dk[21]+= uik[0]*u21 + uik[1]*u22 + uik[2]*u23 + uik[3]*u24 + uik[4]*u25 + uik[5]*u26 + uik[6]*u27;
185: dk[22]+= uik[7]*u21 + uik[8]*u22 + uik[9]*u23+ uik[10]*u24+ uik[11]*u25+ uik[12]*u26+ uik[13]*u27;
186: dk[23]+= uik[14]*u21+ uik[15]*u22+ uik[16]*u23+ uik[17]*u24+ uik[18]*u25+ uik[19]*u26+ uik[20]*u27;
187: dk[24]+= uik[21]*u21+ uik[22]*u22+ uik[23]*u23+ uik[24]*u24+ uik[25]*u25+ uik[26]*u26+ uik[27]*u27;
188: dk[25]+= uik[28]*u21+ uik[29]*u22+ uik[30]*u23+ uik[31]*u24+ uik[32]*u25+ uik[33]*u26+ uik[34]*u27;
189: dk[26]+= uik[35]*u21+ uik[36]*u22+ uik[37]*u23+ uik[38]*u24+ uik[39]*u25+ uik[40]*u26+ uik[41]*u27;
190: dk[27]+= uik[42]*u21+ uik[43]*u22+ uik[44]*u23+ uik[45]*u24+ uik[46]*u25+ uik[47]*u26+ uik[48]*u27;
192: dk[28]+= uik[0]*u28 + uik[1]*u29 + uik[2]*u30 + uik[3]*u31 + uik[4]*u32 + uik[5]*u33 + uik[6]*u34;
193: dk[29]+= uik[7]*u28 + uik[8]*u29 + uik[9]*u30+ uik[10]*u31+ uik[11]*u32+ uik[12]*u33+ uik[13]*u34;
194: dk[30]+= uik[14]*u28+ uik[15]*u29+ uik[16]*u30+ uik[17]*u31+ uik[18]*u32+ uik[19]*u33+ uik[20]*u34;
195: dk[31]+= uik[21]*u28+ uik[22]*u29+ uik[23]*u30+ uik[24]*u31+ uik[25]*u32+ uik[26]*u33+ uik[27]*u34;
196: dk[32]+= uik[28]*u28+ uik[29]*u29+ uik[30]*u30+ uik[31]*u31+ uik[32]*u32+ uik[33]*u33+ uik[34]*u34;
197: dk[33]+= uik[35]*u28+ uik[36]*u29+ uik[37]*u30+ uik[38]*u31+ uik[39]*u32+ uik[40]*u33+ uik[41]*u34;
198: dk[34]+= uik[42]*u28+ uik[43]*u29+ uik[44]*u30+ uik[45]*u31+ uik[46]*u32+ uik[47]*u33+ uik[48]*u34;
200: dk[35]+= uik[0]*u35 + uik[1]*u36 + uik[2]*u37 + uik[3]*u38 + uik[4]*u39 + uik[5]*u40 + uik[6]*u41;
201: dk[36]+= uik[7]*u35 + uik[8]*u36 + uik[9]*u37+ uik[10]*u38+ uik[11]*u39+ uik[12]*u40+ uik[13]*u41;
202: dk[37]+= uik[14]*u35+ uik[15]*u36+ uik[16]*u37+ uik[17]*u38+ uik[18]*u39+ uik[19]*u40+ uik[20]*u41;
203: dk[38]+= uik[21]*u35+ uik[22]*u36+ uik[23]*u37+ uik[24]*u38+ uik[25]*u39+ uik[26]*u40+ uik[27]*u41;
204: dk[39]+= uik[28]*u35+ uik[29]*u36+ uik[30]*u37+ uik[31]*u38+ uik[32]*u39+ uik[33]*u40+ uik[34]*u41;
205: dk[40]+= uik[35]*u35+ uik[36]*u36+ uik[37]*u37+ uik[38]*u38+ uik[39]*u39+ uik[40]*u40+ uik[41]*u41;
206: dk[41]+= uik[42]*u35+ uik[43]*u36+ uik[44]*u37+ uik[45]*u38+ uik[46]*u39+ uik[47]*u40+ uik[48]*u41;
208: dk[42]+= uik[0]*u42 + uik[1]*u43 + uik[2]*u44 + uik[3]*u45 + uik[4]*u46 + uik[5]*u47 + uik[6]*u48;
209: dk[43]+= uik[7]*u42 + uik[8]*u43 + uik[9]*u44+ uik[10]*u45+ uik[11]*u46+ uik[12]*u47+ uik[13]*u48;
210: dk[44]+= uik[14]*u42+ uik[15]*u43+ uik[16]*u44+ uik[17]*u45+ uik[18]*u46+ uik[19]*u47+ uik[20]*u48;
211: dk[45]+= uik[21]*u42+ uik[22]*u43+ uik[23]*u44+ uik[24]*u45+ uik[25]*u46+ uik[26]*u47+ uik[27]*u48;
212: dk[46]+= uik[28]*u42+ uik[29]*u43+ uik[30]*u44+ uik[31]*u45+ uik[32]*u46+ uik[33]*u47+ uik[34]*u48;
213: dk[47]+= uik[35]*u42+ uik[36]*u43+ uik[37]*u44+ uik[38]*u45+ uik[39]*u46+ uik[40]*u47+ uik[41]*u48;
214: dk[48]+= uik[42]*u42+ uik[43]*u43+ uik[44]*u44+ uik[45]*u45+ uik[46]*u46+ uik[47]*u47+ uik[48]*u48;
216: PetscLogFlops(343.0*4.0);
218: /* update -U(i,k) */
219: PetscMemcpy(ba+ili*49,uik,49*sizeof(MatScalar));
221: /* add multiple of row i to k-th row ... */
222: jmin = ili + 1; jmax = bi[i+1];
223: if (jmin < jmax) {
224: for (j=jmin; j<jmax; j++) {
225: /* w += -U(i,k)^T * U_bar(i,j) */
226: wp = w + bj[j]*49;
227: u = ba + j*49;
229: u0 = u[0]; u1 = u[1]; u2 = u[2]; u3 = u[3]; u4 = u[4]; u5 = u[5]; u6 = u[6];
230: u7 = u[7]; u8 = u[8]; u9 = u[9]; u10 = u[10]; u11 = u[11]; u12 = u[12]; u13 = u[13];
231: u14 = u[14]; u15 = u[15]; u16 = u[16]; u17 = u[17]; u18 = u[18]; u19 = u[19]; u20 = u[20];
232: u21 = u[21]; u22 = u[22]; u23 = u[23]; u24 = u[24]; u25 = u[25]; u26 = u[26]; u27 = u[27];
233: u28 = u[28]; u29 = u[29]; u30 = u[30]; u31 = u[31]; u32 = u[32]; u33 = u[33]; u34 = u[34];
234: u35 = u[35]; u36 = u[36]; u37 = u[37]; u38 = u[38]; u39 = u[39]; u40 = u[40]; u41 = u[41]; u42 = u[42];
235: u43 = u[43]; u44 = u[44]; u45 = u[45]; u46 = u[46]; u47 = u[47]; u48 = u[48];
237: wp[0]+= uik[0]*u0 + uik[1]*u1 + uik[2]*u2 + uik[3]*u3 + uik[4]*u4 + uik[5]*u5 + uik[6]*u6;
238: wp[1]+= uik[7]*u0 + uik[8]*u1 + uik[9]*u2+ uik[10]*u3+ uik[11]*u4+ uik[12]*u5+ uik[13]*u6;
239: wp[2]+= uik[14]*u0+ uik[15]*u1+ uik[16]*u2+ uik[17]*u3+ uik[18]*u4+ uik[19]*u5+ uik[20]*u6;
240: wp[3]+= uik[21]*u0+ uik[22]*u1+ uik[23]*u2+ uik[24]*u3+ uik[25]*u4+ uik[26]*u5+ uik[27]*u6;
241: wp[4]+= uik[28]*u0+ uik[29]*u1+ uik[30]*u2+ uik[31]*u3+ uik[32]*u4+ uik[33]*u5+ uik[34]*u6;
242: wp[5]+= uik[35]*u0+ uik[36]*u1+ uik[37]*u2+ uik[38]*u3+ uik[39]*u4+ uik[40]*u5+ uik[41]*u6;
243: wp[6]+= uik[42]*u0+ uik[43]*u1+ uik[44]*u2+ uik[45]*u3+ uik[46]*u4+ uik[47]*u5+ uik[48]*u6;
245: wp[7] += uik[0]*u7 + uik[1]*u8 + uik[2]*u9 + uik[3]*u10 + uik[4]*u11 + uik[5]*u12 + uik[6]*u13;
246: wp[8] += uik[7]*u7 + uik[8]*u8 + uik[9]*u9+ uik[10]*u10+ uik[11]*u11+ uik[12]*u12+ uik[13]*u13;
247: wp[9] +=uik[14]*u7+ uik[15]*u8+ uik[16]*u9+ uik[17]*u10+ uik[18]*u11+ uik[19]*u12+ uik[20]*u13;
248: wp[10]+=uik[21]*u7+ uik[22]*u8+ uik[23]*u9+ uik[24]*u10+ uik[25]*u11+ uik[26]*u12+ uik[27]*u13;
249: wp[11]+=uik[28]*u7+ uik[29]*u8+ uik[30]*u9+ uik[31]*u10+ uik[32]*u11+ uik[33]*u12+ uik[34]*u13;
250: wp[12]+=uik[35]*u7+ uik[36]*u8+ uik[37]*u9+ uik[38]*u10+ uik[39]*u11+ uik[40]*u12+ uik[41]*u13;
251: wp[13]+=uik[42]*u7+ uik[43]*u8+ uik[44]*u9+ uik[45]*u10+ uik[46]*u11+ uik[47]*u12+ uik[48]*u13;
253: wp[14]+= uik[0]*u14 + uik[1]*u15 + uik[2]*u16 + uik[3]*u17 + uik[4]*u18 + uik[5]*u19 + uik[6]*u20;
254: wp[15]+= uik[7]*u14 + uik[8]*u15 + uik[9]*u16+ uik[10]*u17+ uik[11]*u18+ uik[12]*u19+ uik[13]*u20;
255: wp[16]+= uik[14]*u14+ uik[15]*u15+ uik[16]*u16+ uik[17]*u17+ uik[18]*u18+ uik[19]*u19+ uik[20]*u20;
256: wp[17]+= uik[21]*u14+ uik[22]*u15+ uik[23]*u16+ uik[24]*u17+ uik[25]*u18+ uik[26]*u19+ uik[27]*u20;
257: wp[18]+= uik[28]*u14+ uik[29]*u15+ uik[30]*u16+ uik[31]*u17+ uik[32]*u18+ uik[33]*u19+ uik[34]*u20;
258: wp[19]+= uik[35]*u14+ uik[36]*u15+ uik[37]*u16+ uik[38]*u17+ uik[39]*u18+ uik[40]*u19+ uik[41]*u20;
259: wp[20]+= uik[42]*u14+ uik[43]*u15+ uik[44]*u16+ uik[45]*u17+ uik[46]*u18+ uik[47]*u19+ uik[48]*u20;
261: wp[21]+= uik[0]*u21 + uik[1]*u22 + uik[2]*u23 + uik[3]*u24 + uik[4]*u25 + uik[5]*u26 + uik[6]*u27;
262: wp[22]+= uik[7]*u21 + uik[8]*u22 + uik[9]*u23+ uik[10]*u24+ uik[11]*u25+ uik[12]*u26+ uik[13]*u27;
263: wp[23]+= uik[14]*u21+ uik[15]*u22+ uik[16]*u23+ uik[17]*u24+ uik[18]*u25+ uik[19]*u26+ uik[20]*u27;
264: wp[24]+= uik[21]*u21+ uik[22]*u22+ uik[23]*u23+ uik[24]*u24+ uik[25]*u25+ uik[26]*u26+ uik[27]*u27;
265: wp[25]+= uik[28]*u21+ uik[29]*u22+ uik[30]*u23+ uik[31]*u24+ uik[32]*u25+ uik[33]*u26+ uik[34]*u27;
266: wp[26]+= uik[35]*u21+ uik[36]*u22+ uik[37]*u23+ uik[38]*u24+ uik[39]*u25+ uik[40]*u26+ uik[41]*u27;
267: wp[27]+= uik[42]*u21+ uik[43]*u22+ uik[44]*u23+ uik[45]*u24+ uik[46]*u25+ uik[47]*u26+ uik[48]*u27;
269: wp[28]+= uik[0]*u28 + uik[1]*u29 + uik[2]*u30 + uik[3]*u31 + uik[4]*u32 + uik[5]*u33 + uik[6]*u34;
270: wp[29]+= uik[7]*u28 + uik[8]*u29 + uik[9]*u30+ uik[10]*u31+ uik[11]*u32+ uik[12]*u33+ uik[13]*u34;
271: wp[30]+= uik[14]*u28+ uik[15]*u29+ uik[16]*u30+ uik[17]*u31+ uik[18]*u32+ uik[19]*u33+ uik[20]*u34;
272: wp[31]+= uik[21]*u28+ uik[22]*u29+ uik[23]*u30+ uik[24]*u31+ uik[25]*u32+ uik[26]*u33+ uik[27]*u34;
273: wp[32]+= uik[28]*u28+ uik[29]*u29+ uik[30]*u30+ uik[31]*u31+ uik[32]*u32+ uik[33]*u33+ uik[34]*u34;
274: wp[33]+= uik[35]*u28+ uik[36]*u29+ uik[37]*u30+ uik[38]*u31+ uik[39]*u32+ uik[40]*u33+ uik[41]*u34;
275: wp[34]+= uik[42]*u28+ uik[43]*u29+ uik[44]*u30+ uik[45]*u31+ uik[46]*u32+ uik[47]*u33+ uik[48]*u34;
277: wp[35]+= uik[0]*u35 + uik[1]*u36 + uik[2]*u37 + uik[3]*u38 + uik[4]*u39 + uik[5]*u40 + uik[6]*u41;
278: wp[36]+= uik[7]*u35 + uik[8]*u36 + uik[9]*u37+ uik[10]*u38+ uik[11]*u39+ uik[12]*u40+ uik[13]*u41;
279: wp[37]+= uik[14]*u35+ uik[15]*u36+ uik[16]*u37+ uik[17]*u38+ uik[18]*u39+ uik[19]*u40+ uik[20]*u41;
280: wp[38]+= uik[21]*u35+ uik[22]*u36+ uik[23]*u37+ uik[24]*u38+ uik[25]*u39+ uik[26]*u40+ uik[27]*u41;
281: wp[39]+= uik[28]*u35+ uik[29]*u36+ uik[30]*u37+ uik[31]*u38+ uik[32]*u39+ uik[33]*u40+ uik[34]*u41;
282: wp[40]+= uik[35]*u35+ uik[36]*u36+ uik[37]*u37+ uik[38]*u38+ uik[39]*u39+ uik[40]*u40+ uik[41]*u41;
283: wp[41]+= uik[42]*u35+ uik[43]*u36+ uik[44]*u37+ uik[45]*u38+ uik[46]*u39+ uik[47]*u40+ uik[48]*u41;
285: wp[42]+= uik[0]*u42 + uik[1]*u43 + uik[2]*u44 + uik[3]*u45 + uik[4]*u46 + uik[5]*u47 + uik[6]*u48;
286: wp[43]+= uik[7]*u42 + uik[8]*u43 + uik[9]*u44+ uik[10]*u45+ uik[11]*u46+ uik[12]*u47+ uik[13]*u48;
287: wp[44]+= uik[14]*u42+ uik[15]*u43+ uik[16]*u44+ uik[17]*u45+ uik[18]*u46+ uik[19]*u47+ uik[20]*u48;
288: wp[45]+= uik[21]*u42+ uik[22]*u43+ uik[23]*u44+ uik[24]*u45+ uik[25]*u46+ uik[26]*u47+ uik[27]*u48;
289: wp[46]+= uik[28]*u42+ uik[29]*u43+ uik[30]*u44+ uik[31]*u45+ uik[32]*u46+ uik[33]*u47+ uik[34]*u48;
290: wp[47]+= uik[35]*u42+ uik[36]*u43+ uik[37]*u44+ uik[38]*u45+ uik[39]*u46+ uik[40]*u47+ uik[41]*u48;
291: wp[48]+= uik[42]*u42+ uik[43]*u43+ uik[44]*u44+ uik[45]*u45+ uik[46]*u46+ uik[47]*u47+ uik[48]*u48;
292: }
293: PetscLogFlops(2.0*343.0*(jmax-jmin));
295: /* ... add i to row list for next nonzero entry */
296: il[i] = jmin; /* update il(i) in column k+1, ... mbs-1 */
297: j = bj[jmin];
298: jl[i] = jl[j]; jl[j] = i; /* update jl */
299: }
300: i = nexti;
301: }
303: /* save nonzero entries in k-th row of U ... */
305: /* invert diagonal block */
306: d = ba+k*49;
307: PetscMemcpy(d,dk,49*sizeof(MatScalar));
308: PetscKernel_A_gets_inverse_A_7(d,shift,allowzeropivot,&zeropivotdetected);
309: if (zeropivotdetected) C->factorerrortype = MAT_FACTOR_NUMERIC_ZEROPIVOT;
311: jmin = bi[k]; jmax = bi[k+1];
312: if (jmin < jmax) {
313: for (j=jmin; j<jmax; j++) {
314: vj = bj[j]; /* block col. index of U */
315: u = ba + j*49;
316: wp = w + vj*49;
317: for (k1=0; k1<49; k1++) {
318: *u++ = *wp;
319: *wp++ = 0.0;
320: }
321: }
323: /* ... add k to row list for first nonzero entry in k-th row */
324: il[k] = jmin;
325: i = bj[jmin];
326: jl[k] = jl[i]; jl[i] = k;
327: }
328: }
330: PetscFree(w);
331: PetscFree2(il,jl);
332: PetscFree2(dk,uik);
333: if (a->permute) {
334: PetscFree(aa);
335: }
337: ISRestoreIndices(perm,&perm_ptr);
339: C->ops->solve = MatSolve_SeqSBAIJ_7_inplace;
340: C->ops->solvetranspose = MatSolve_SeqSBAIJ_7_inplace;
341: C->assembled = PETSC_TRUE;
342: C->preallocated = PETSC_TRUE;
344: PetscLogFlops(1.3333*343*b->mbs); /* from inverting diagonal blocks */
345: return(0);
346: }