Actual source code: sfbasic.c
petsc-3.6.4 2016-04-12
2: #include <petsc/private/sfimpl.h> /*I "petscsf.h" I*/
4: typedef struct _n_PetscSFBasicPack *PetscSFBasicPack;
5: struct _n_PetscSFBasicPack {
6: void (*Pack)(PetscInt,PetscInt,const PetscInt*,const void*,void*);
7: void (*UnpackInsert)(PetscInt,PetscInt,const PetscInt*,void*,const void*);
8: void (*UnpackAdd)(PetscInt,PetscInt,const PetscInt*,void*,const void*);
9: void (*UnpackMin)(PetscInt,PetscInt,const PetscInt*,void*,const void*);
10: void (*UnpackMax)(PetscInt,PetscInt,const PetscInt*,void*,const void*);
11: void (*UnpackMinloc)(PetscInt,PetscInt,const PetscInt*,void*,const void*);
12: void (*UnpackMaxloc)(PetscInt,PetscInt,const PetscInt*,void*,const void*);
13: void (*UnpackMult)(PetscInt,PetscInt,const PetscInt*,void*,const void *);
14: void (*UnpackLAND)(PetscInt,PetscInt,const PetscInt*,void*,const void *);
15: void (*UnpackBAND)(PetscInt,PetscInt,const PetscInt*,void*,const void *);
16: void (*UnpackLOR)(PetscInt,PetscInt,const PetscInt*,void*,const void *);
17: void (*UnpackBOR)(PetscInt,PetscInt,const PetscInt*,void*,const void *);
18: void (*UnpackLXOR)(PetscInt,PetscInt,const PetscInt*,void*,const void *);
19: void (*UnpackBXOR)(PetscInt,PetscInt,const PetscInt*,void*,const void *);
20: void (*FetchAndInsert)(PetscInt,PetscInt,const PetscInt*,void*,void*);
21: void (*FetchAndAdd)(PetscInt,PetscInt,const PetscInt*,void*,void*);
22: void (*FetchAndMin)(PetscInt,PetscInt,const PetscInt*,void*,void*);
23: void (*FetchAndMax)(PetscInt,PetscInt,const PetscInt*,void*,void*);
24: void (*FetchAndMinloc)(PetscInt,PetscInt,const PetscInt*,void*,void*);
25: void (*FetchAndMaxloc)(PetscInt,PetscInt,const PetscInt*,void*,void*);
26: void (*FetchAndMult)(PetscInt,PetscInt,const PetscInt*,void*,void*);
27: void (*FetchAndLAND)(PetscInt,PetscInt,const PetscInt*,void*,void*);
28: void (*FetchAndBAND)(PetscInt,PetscInt,const PetscInt*,void*,void*);
29: void (*FetchAndLOR)(PetscInt,PetscInt,const PetscInt*,void*,void*);
30: void (*FetchAndBOR)(PetscInt,PetscInt,const PetscInt*,void*,void*);
31: void (*FetchAndLXOR)(PetscInt,PetscInt,const PetscInt*,void*,void*);
32: void (*FetchAndBXOR)(PetscInt,PetscInt,const PetscInt*,void*,void*);
34: MPI_Datatype unit;
35: size_t unitbytes; /* Number of bytes in a unit */
36: PetscInt bs; /* Number of basic units in a unit */
37: const void *key; /* Array used as key for operation */
38: char *root; /* Packed root data, contiguous by leaf rank */
39: char *leaf; /* Packed leaf data, contiguous by root rank */
40: MPI_Request *requests; /* Array of root requests followed by leaf requests */
41: PetscSFBasicPack next;
42: };
44: typedef struct {
45: PetscMPIInt tag;
46: PetscInt niranks; /* Number of incoming ranks (ranks accessing my roots) */
47: PetscMPIInt *iranks; /* Array of ranks that reference my roots */
48: PetscInt itotal; /* Total number of graph edges referencing my roots */
49: PetscInt *ioffset; /* Array of length niranks+1 holding offset in irootloc[] for each rank */
50: PetscInt *irootloc; /* Incoming roots referenced by ranks starting at ioffset[rank] */
51: PetscSFBasicPack avail; /* One or more entries per MPI Datatype, lazily constructed */
52: PetscSFBasicPack inuse; /* Buffers being used for transactions that have not yet completed */
53: } PetscSF_Basic;
55: #if !defined(PETSC_HAVE_MPI_TYPE_DUP) /* Danger: type is not reference counted; subject to ABA problem */
56: PETSC_STATIC_INLINE PetscErrorCode MPI_Type_dup(MPI_Datatype datatype,MPI_Datatype *newtype)
57: {
58: *newtype = datatype;
59: return 0;
60: }
61: #endif
63: /*
64: * MPI_Reduce_local is not really useful because it can't handle sparse data and it vectorizes "in the wrong direction",
65: * therefore we pack data types manually. This section defines packing routines for the standard data types.
66: */
68: #define CPPJoin2_exp(a,b) a ## b
69: #define CPPJoin2(a,b) CPPJoin2_exp(a,b)
70: #define CPPJoin3_exp_(a,b,c) a ## b ## _ ## c
71: #define CPPJoin3_(a,b,c) CPPJoin3_exp_(a,b,c)
73: /* Basic types without addition */
74: #define DEF_PackNoInit(type,BS) \
75: static void CPPJoin3_(Pack_,type,BS)(PetscInt n,PetscInt bs,const PetscInt *idx,const void *unpacked,void *packed) { \
76: const type *u = (const type*)unpacked; \
77: type *p = (type*)packed; \
78: PetscInt i,j,k; \
79: for (i=0; i<n; i++) \
80: for (j=0; j<bs; j+=BS) \
81: for (k=j; k<j+BS; k++) \
82: p[i*bs+k] = u[idx[i]*bs+k]; \
83: } \
84: static void CPPJoin3_(UnpackInsert_,type,BS)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,const void *packed) { \
85: type *u = (type*)unpacked; \
86: const type *p = (const type*)packed; \
87: PetscInt i,j,k; \
88: for (i=0; i<n; i++) \
89: for (j=0; j<bs; j+=BS) \
90: for (k=j; k<j+BS; k++) \
91: u[idx[i]*bs+k] = p[i*bs+k]; \
92: } \
93: static void CPPJoin3_(FetchAndInsert_,type,BS)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,void *packed) { \
94: type *u = (type*)unpacked; \
95: type *p = (type*)packed; \
96: PetscInt i,j,k; \
97: for (i=0; i<n; i++) { \
98: PetscInt ii = idx[i]; \
99: for (j=0; j<bs; j+=BS) \
100: for (k=j; k<j+BS; k++) { \
101: type t = u[ii*bs+k]; \
102: u[ii*bs+k] = p[i*bs+k]; \
103: p[i*bs+k] = t; \
104: } \
105: } \
106: }
108: /* Basic types defining addition */
109: #define DEF_PackAddNoInit(type,BS) \
110: DEF_PackNoInit(type,BS) \
111: static void CPPJoin3_(UnpackAdd_,type,BS)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,const void *packed) { \
112: type *u = (type*)unpacked; \
113: const type *p = (const type*)packed; \
114: PetscInt i,j,k; \
115: for (i=0; i<n; i++) \
116: for (j=0; j<bs; j+=BS) \
117: for (k=j; k<j+BS; k++) \
118: u[idx[i]*bs+k] += p[i*bs+k]; \
119: } \
120: static void CPPJoin3_(FetchAndAdd_,type,BS)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,void *packed) { \
121: type *u = (type*)unpacked; \
122: type *p = (type*)packed; \
123: PetscInt i,j,k; \
124: for (i=0; i<n; i++) { \
125: PetscInt ii = idx[i]; \
126: for (j=0; j<bs; j+=BS) \
127: for (k=j; k<j+BS; k++) { \
128: type t = u[ii*bs+k]; \
129: u[ii*bs+k] = t + p[i*bs+k]; \
130: p[i*bs+k] = t; \
131: } \
132: } \
133: } \
134: static void CPPJoin3_(UnpackMult_,type,BS)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,const void *packed) { \
135: type *u = (type*)unpacked; \
136: const type *p = (const type*)packed; \
137: PetscInt i,j,k; \
138: for (i=0; i<n; i++) \
139: for (j=0; j<bs; j+=BS) \
140: for (k=j; k<j+BS; k++) \
141: u[idx[i]*bs+k] *= p[i*bs+k]; \
142: } \
143: static void CPPJoin3_(FetchAndMult_,type,BS)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,void *packed) { \
144: type *u = (type*)unpacked; \
145: type *p = (type*)packed; \
146: PetscInt i,j,k; \
147: for (i=0; i<n; i++) { \
148: PetscInt ii = idx[i]; \
149: for (j=0; j<bs; j+=BS) \
150: for (k=j; k<j+BS; k++) { \
151: type t = u[ii*bs+k]; \
152: u[ii*bs+k] = t * p[i*bs+k]; \
153: p[i*bs+k] = t; \
154: } \
155: } \
156: }
157: #define DEF_Pack(type,BS) \
158: DEF_PackAddNoInit(type,BS) \
159: static void CPPJoin3_(PackInit_,type,BS)(PetscSFBasicPack link) { \
160: link->Pack = CPPJoin3_(Pack_,type,BS); \
161: link->UnpackInsert = CPPJoin3_(UnpackInsert_,type,BS); \
162: link->UnpackAdd = CPPJoin3_(UnpackAdd_,type,BS); \
163: link->UnpackMult = CPPJoin3_(UnpackMult_,type,BS); \
164: link->FetchAndInsert = CPPJoin3_(FetchAndInsert_,type,BS); \
165: link->FetchAndAdd = CPPJoin3_(FetchAndAdd_,type,BS); \
166: link->FetchAndMult = CPPJoin3_(FetchAndMult_,type,BS); \
167: link->unitbytes = sizeof(type); \
168: }
169: /* Comparable types */
170: #define DEF_PackCmp(type) \
171: DEF_PackAddNoInit(type,1) \
172: static void CPPJoin2(UnpackMax_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,const void *packed) { \
173: type *u = (type*)unpacked; \
174: const type *p = (const type*)packed; \
175: PetscInt i; \
176: for (i=0; i<n; i++) { \
177: type v = u[idx[i]]; \
178: u[idx[i]] = PetscMax(v,p[i]); \
179: } \
180: } \
181: static void CPPJoin2(UnpackMin_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,const void *packed) { \
182: type *u = (type*)unpacked; \
183: const type *p = (const type*)packed; \
184: PetscInt i; \
185: for (i=0; i<n; i++) { \
186: type v = u[idx[i]]; \
187: u[idx[i]] = PetscMin(v,p[i]); \
188: } \
189: } \
190: static void CPPJoin2(FetchAndMax_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,void *packed) { \
191: type *u = (type*)unpacked; \
192: type *p = (type*)packed; \
193: PetscInt i; \
194: for (i=0; i<n; i++) { \
195: PetscInt j = idx[i]; \
196: type v = u[j]; \
197: u[j] = PetscMax(v,p[i]); \
198: p[i] = v; \
199: } \
200: } \
201: static void CPPJoin2(FetchAndMin_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,void *packed) { \
202: type *u = (type*)unpacked; \
203: type *p = (type*)packed; \
204: PetscInt i; \
205: for (i=0; i<n; i++) { \
206: PetscInt j = idx[i]; \
207: type v = u[j]; \
208: u[j] = PetscMin(v,p[i]); \
209: p[i] = v; \
210: } \
211: } \
212: static void CPPJoin2(PackInit_,type)(PetscSFBasicPack link) { \
213: link->Pack = CPPJoin3_(Pack_,type,1); \
214: link->UnpackInsert = CPPJoin3_(UnpackInsert_,type,1); \
215: link->UnpackAdd = CPPJoin3_(UnpackAdd_,type,1); \
216: link->UnpackMax = CPPJoin2(UnpackMax_,type); \
217: link->UnpackMin = CPPJoin2(UnpackMin_,type); \
218: link->UnpackMult = CPPJoin3_(UnpackMult_,type,1); \
219: link->FetchAndInsert = CPPJoin3_(FetchAndInsert_,type,1); \
220: link->FetchAndAdd = CPPJoin3_(FetchAndAdd_ ,type,1); \
221: link->FetchAndMax = CPPJoin2(FetchAndMax_ ,type); \
222: link->FetchAndMin = CPPJoin2(FetchAndMin_ ,type); \
223: link->FetchAndMult = CPPJoin3_(FetchAndMult_,type,1); \
224: link->unitbytes = sizeof(type); \
225: }
227: /* Logical Types */
228: #define DEF_PackLog(type) \
229: static void CPPJoin2(UnpackLAND_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,const void *packed) { \
230: type *u = (type*)unpacked; \
231: const type *p = (const type*)packed; \
232: PetscInt i; \
233: for (i=0; i<n; i++) { \
234: type v = u[idx[i]]; \
235: u[idx[i]] = v && p[i]; \
236: } \
237: } \
238: static void CPPJoin2(UnpackLOR_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,const void *packed) { \
239: type *u = (type*)unpacked; \
240: const type *p = (const type*)packed; \
241: PetscInt i; \
242: for (i=0; i<n; i++) { \
243: type v = u[idx[i]]; \
244: u[idx[i]] = v || p[i]; \
245: } \
246: } \
247: static void CPPJoin2(UnpackLXOR_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,const void *packed) { \
248: type *u = (type*)unpacked; \
249: const type *p = (const type*)packed; \
250: PetscInt i; \
251: for (i=0; i<n; i++) { \
252: type v = u[idx[i]]; \
253: u[idx[i]] = (!v)!=(!p[i]); \
254: } \
255: } \
256: static void CPPJoin2(FetchAndLAND_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,void *packed) { \
257: type *u = (type*)unpacked; \
258: type *p = (type*)packed; \
259: PetscInt i; \
260: for (i=0; i<n; i++) { \
261: PetscInt j = idx[i]; \
262: type v = u[j]; \
263: u[j] = v && p[i]; \
264: p[i] = v; \
265: } \
266: } \
267: static void CPPJoin2(FetchAndLOR_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,void *packed) { \
268: type *u = (type*)unpacked; \
269: type *p = (type*)packed; \
270: PetscInt i; \
271: for (i=0; i<n; i++) { \
272: PetscInt j = idx[i]; \
273: type v = u[j]; \
274: u[j] = v || p[i]; \
275: p[i] = v; \
276: } \
277: } \
278: static void CPPJoin2(FetchAndLXOR_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,void *packed) { \
279: type *u = (type*)unpacked; \
280: type *p = (type*)packed; \
281: PetscInt i; \
282: for (i=0; i<n; i++) { \
283: PetscInt j = idx[i]; \
284: type v = u[j]; \
285: u[j] = (!v)!=(!p[i]); \
286: p[i] = v; \
287: } \
288: } \
289: static void CPPJoin2(PackInit_Logical_,type)(PetscSFBasicPack link) { \
290: link->UnpackLAND = CPPJoin2(UnpackLAND_,type); \
291: link->UnpackLOR = CPPJoin2(UnpackLOR_,type); \
292: link->UnpackLXOR = CPPJoin2(UnpackLXOR_,type); \
293: link->FetchAndLAND = CPPJoin2(FetchAndLAND_,type); \
294: link->FetchAndLOR = CPPJoin2(FetchAndLOR_,type); \
295: link->FetchAndLXOR = CPPJoin2(FetchAndLXOR_,type); \
296: }
299: /* Bitwise Types */
300: #define DEF_PackBit(type) \
301: static void CPPJoin2(UnpackBAND_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,const void *packed) { \
302: type *u = (type*)unpacked; \
303: const type *p = (const type*)packed; \
304: PetscInt i; \
305: for (i=0; i<n; i++) { \
306: type v = u[idx[i]]; \
307: u[idx[i]] = v & p[i]; \
308: } \
309: } \
310: static void CPPJoin2(UnpackBOR_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,const void *packed) { \
311: type *u = (type*)unpacked; \
312: const type *p = (const type*)packed; \
313: PetscInt i; \
314: for (i=0; i<n; i++) { \
315: type v = u[idx[i]]; \
316: u[idx[i]] = v | p[i]; \
317: } \
318: } \
319: static void CPPJoin2(UnpackBXOR_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,const void *packed) { \
320: type *u = (type*)unpacked; \
321: const type *p = (const type*)packed; \
322: PetscInt i; \
323: for (i=0; i<n; i++) { \
324: type v = u[idx[i]]; \
325: u[idx[i]] = v^p[i]; \
326: } \
327: } \
328: static void CPPJoin2(FetchAndBAND_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,void *packed) { \
329: type *u = (type*)unpacked; \
330: type *p = (type*)packed; \
331: PetscInt i; \
332: for (i=0; i<n; i++) { \
333: PetscInt j = idx[i]; \
334: type v = u[j]; \
335: u[j] = v & p[i]; \
336: p[i] = v; \
337: } \
338: } \
339: static void CPPJoin2(FetchAndBOR_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,void *packed) { \
340: type *u = (type*)unpacked; \
341: type *p = (type*)packed; \
342: PetscInt i; \
343: for (i=0; i<n; i++) { \
344: PetscInt j = idx[i]; \
345: type v = u[j]; \
346: u[j] = v | p[i]; \
347: p[i] = v; \
348: } \
349: } \
350: static void CPPJoin2(FetchAndBXOR_,type)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,void *packed) { \
351: type *u = (type*)unpacked; \
352: type *p = (type*)packed; \
353: PetscInt i; \
354: for (i=0; i<n; i++) { \
355: PetscInt j = idx[i]; \
356: type v = u[j]; \
357: u[j] = v^p[i]; \
358: p[i] = v; \
359: } \
360: } \
361: static void CPPJoin2(PackInit_Bitwise_,type)(PetscSFBasicPack link) { \
362: link->UnpackBAND = CPPJoin2(UnpackBAND_,type); \
363: link->UnpackBOR = CPPJoin2(UnpackBOR_,type); \
364: link->UnpackBXOR = CPPJoin2(UnpackBXOR_,type); \
365: link->FetchAndBAND = CPPJoin2(FetchAndBAND_,type); \
366: link->FetchAndBOR = CPPJoin2(FetchAndBOR_,type); \
367: link->FetchAndBXOR = CPPJoin2(FetchAndBXOR_,type); \
368: }
370: /* Pair types */
371: #define CPPJoinloc_exp(base,op,t1,t2) base ## op ## loc_ ## t1 ## _ ## t2
372: #define CPPJoinloc(base,op,t1,t2) CPPJoinloc_exp(base,op,t1,t2)
373: #define PairType(type1,type2) CPPJoin3_(_pairtype_,type1,type2)
374: #define DEF_UnpackXloc(type1,type2,locname,op) \
375: static void CPPJoinloc(Unpack,locname,type1,type2)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,const void *packed) { \
376: PairType(type1,type2) *u = (PairType(type1,type2)*)unpacked; \
377: const PairType(type1,type2) *p = (const PairType(type1,type2)*)packed; \
378: PetscInt i; \
379: for (i=0; i<n; i++) { \
380: PetscInt j = idx[i]; \
381: if (p[i].a op u[j].a) { \
382: u[j].a = p[i].a; \
383: u[j].b = p[i].b; \
384: } else if (u[j].a == p[i].a) { \
385: u[j].b = PetscMin(u[j].b,p[i].b); \
386: } \
387: } \
388: } \
389: static void CPPJoinloc(FetchAnd,locname,type1,type2)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,void *packed) { \
390: PairType(type1,type2) *u = (PairType(type1,type2)*)unpacked; \
391: PairType(type1,type2) *p = (PairType(type1,type2)*)packed; \
392: PetscInt i; \
393: for (i=0; i<n; i++) { \
394: PetscInt j = idx[i]; \
395: PairType(type1,type2) v; \
396: v.a = u[j].a; \
397: v.b = u[j].b; \
398: if (p[i].a op u[j].a) { \
399: u[j].a = p[i].a; \
400: u[j].b = p[i].b; \
401: } else if (u[j].a == p[i].a) { \
402: u[j].b = PetscMin(u[j].b,p[i].b); \
403: } \
404: p[i].a = v.a; \
405: p[i].b = v.b; \
406: } \
407: }
408: #define DEF_PackPair(type1,type2) \
409: typedef struct {type1 a; type2 b;} PairType(type1,type2); \
410: static void CPPJoin3_(Pack_,type1,type2)(PetscInt n,PetscInt bs,const PetscInt *idx,const void *unpacked,void *packed) { \
411: const PairType(type1,type2) *u = (const PairType(type1,type2)*)unpacked; \
412: PairType(type1,type2) *p = (PairType(type1,type2)*)packed; \
413: PetscInt i; \
414: for (i=0; i<n; i++) { \
415: p[i].a = u[idx[i]].a; \
416: p[i].b = u[idx[i]].b; \
417: } \
418: } \
419: static void CPPJoin3_(UnpackInsert_,type1,type2)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,const void *packed) { \
420: PairType(type1,type2) *u = (PairType(type1,type2)*)unpacked; \
421: const PairType(type1,type2) *p = (const PairType(type1,type2)*)packed; \
422: PetscInt i; \
423: for (i=0; i<n; i++) { \
424: u[idx[i]].a = p[i].a; \
425: u[idx[i]].b = p[i].b; \
426: } \
427: } \
428: static void CPPJoin3_(UnpackAdd_,type1,type2)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,const void *packed) { \
429: PairType(type1,type2) *u = (PairType(type1,type2)*)unpacked; \
430: const PairType(type1,type2) *p = (const PairType(type1,type2)*)packed; \
431: PetscInt i; \
432: for (i=0; i<n; i++) { \
433: u[idx[i]].a += p[i].a; \
434: u[idx[i]].b += p[i].b; \
435: } \
436: } \
437: static void CPPJoin3_(FetchAndInsert_,type1,type2)(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,void *packed) { \
438: PairType(type1,type2) *u = (PairType(type1,type2)*)unpacked; \
439: PairType(type1,type2) *p = (PairType(type1,type2)*)packed; \
440: PetscInt i; \
441: for (i=0; i<n; i++) { \
442: PetscInt j = idx[i]; \
443: PairType(type1,type2) v; \
444: v.a = u[j].a; \
445: v.b = u[j].b; \
446: u[j].a = p[i].a; \
447: u[j].b = p[i].b; \
448: p[i].a = v.a; \
449: p[i].b = v.b; \
450: } \
451: } \
452: static void FetchAndAdd_ ## type1 ## _ ## type2(PetscInt n,PetscInt bs,const PetscInt *idx,void *unpacked,void *packed) { \
453: PairType(type1,type2) *u = (PairType(type1,type2)*)unpacked; \
454: PairType(type1,type2) *p = (PairType(type1,type2)*)packed; \
455: PetscInt i; \
456: for (i=0; i<n; i++) { \
457: PetscInt j = idx[i]; \
458: PairType(type1,type2) v; \
459: v.a = u[j].a; \
460: v.b = u[j].b; \
461: u[j].a = v.a + p[i].a; \
462: u[j].b = v.b + p[i].b; \
463: p[i].a = v.a; \
464: p[i].b = v.b; \
465: } \
466: } \
467: DEF_UnpackXloc(type1,type2,Max,>) \
468: DEF_UnpackXloc(type1,type2,Min,<) \
469: static void CPPJoin3_(PackInit_,type1,type2)(PetscSFBasicPack link) { \
470: link->Pack = CPPJoin3_(Pack_,type1,type2); \
471: link->UnpackInsert = CPPJoin3_(UnpackInsert_,type1,type2); \
472: link->UnpackAdd = CPPJoin3_(UnpackAdd_,type1,type2); \
473: link->UnpackMaxloc = CPPJoin3_(UnpackMaxloc_,type1,type2); \
474: link->UnpackMinloc = CPPJoin3_(UnpackMinloc_,type1,type2); \
475: link->FetchAndInsert = CPPJoin3_(FetchAndInsert_,type1,type2); \
476: link->FetchAndAdd = CPPJoin3_(FetchAndAdd_,type1,type2); \
477: link->FetchAndMaxloc = CPPJoin3_(FetchAndMaxloc_,type1,type2); \
478: link->FetchAndMinloc = CPPJoin3_(FetchAndMinloc_,type1,type2); \
479: link->unitbytes = sizeof(PairType(type1,type2)); \
480: }
482: /* Currently only dumb blocks of data */
483: #define BlockType(unit,count) CPPJoin3_(_blocktype_,unit,count)
484: #define DEF_Block(unit,count) \
485: typedef struct {unit v[count];} BlockType(unit,count); \
486: DEF_PackNoInit(BlockType(unit,count),1) \
487: static void CPPJoin3_(PackInit_block_,unit,count)(PetscSFBasicPack link) { \
488: link->Pack = CPPJoin3_(Pack_,BlockType(unit,count),1); \
489: link->UnpackInsert = CPPJoin3_(UnpackInsert_,BlockType(unit,count),1); \
490: link->FetchAndInsert = CPPJoin3_(FetchAndInsert_,BlockType(unit,count),1); \
491: link->unitbytes = sizeof(BlockType(unit,count)); \
492: }
494: DEF_PackCmp(int)
495: DEF_PackBit(int)
496: DEF_PackLog(int)
497: DEF_PackCmp(PetscInt)
498: DEF_PackBit(PetscInt)
499: DEF_PackLog(PetscInt)
500: DEF_Pack(PetscInt,2)
501: DEF_Pack(PetscInt,3)
502: DEF_Pack(PetscInt,4)
503: DEF_Pack(PetscInt,5)
504: DEF_Pack(PetscInt,7)
505: DEF_PackCmp(PetscReal)
506: DEF_PackLog(PetscReal)
507: DEF_Pack(PetscReal,2)
508: DEF_Pack(PetscReal,3)
509: DEF_Pack(PetscReal,4)
510: DEF_Pack(PetscReal,5)
511: DEF_Pack(PetscReal,7)
512: #if defined(PETSC_HAVE_COMPLEX)
513: DEF_Pack(PetscComplex,1)
514: DEF_Pack(PetscComplex,2)
515: DEF_Pack(PetscComplex,3)
516: DEF_Pack(PetscComplex,4)
517: DEF_Pack(PetscComplex,5)
518: DEF_Pack(PetscComplex,7)
519: #endif
520: DEF_PackPair(int,int)
521: DEF_PackPair(PetscInt,PetscInt)
522: DEF_Block(int,1)
523: DEF_Block(int,2)
524: DEF_Block(int,3)
525: DEF_Block(int,4)
526: DEF_Block(int,5)
527: DEF_Block(int,6)
528: DEF_Block(int,7)
529: DEF_Block(int,8)
533: static PetscErrorCode PetscSFSetUp_Basic(PetscSF sf)
534: {
535: PetscSF_Basic *bas = (PetscSF_Basic*)sf->data;
537: PetscInt *rlengths,*ilengths,i;
538: MPI_Comm comm;
539: MPI_Request *rootreqs,*leafreqs;
542: PetscObjectGetComm((PetscObject)sf,&comm);
543: PetscObjectGetNewTag((PetscObject)sf,&bas->tag);
544: /*
545: * Inform roots about how many leaves and from which ranks
546: */
547: PetscMalloc1(sf->nranks,&rlengths);
548: /* Determine number, sending ranks, and length of incoming */
549: for (i=0; i<sf->nranks; i++) {
550: rlengths[i] = sf->roffset[i+1] - sf->roffset[i]; /* Number of roots referenced by my leaves; for rank sf->ranks[i] */
551: }
552: PetscCommBuildTwoSided(comm,1,MPIU_INT,sf->nranks,sf->ranks,rlengths,&bas->niranks,&bas->iranks,(void**)&ilengths);
553: PetscFree(rlengths);
555: /* Send leaf identities to roots */
556: for (i=0,bas->itotal=0; i<bas->niranks; i++) bas->itotal += ilengths[i];
557: PetscMalloc2(bas->niranks+1,&bas->ioffset,bas->itotal,&bas->irootloc);
558: PetscMalloc2(bas->niranks,&rootreqs,sf->nranks,&leafreqs);
559: bas->ioffset[0] = 0;
560: for (i=0; i<bas->niranks; i++) {
561: bas->ioffset[i+1] = bas->ioffset[i] + ilengths[i];
562: MPI_Irecv(bas->irootloc+bas->ioffset[i],ilengths[i],MPIU_INT,bas->iranks[i],bas->tag,comm,&rootreqs[i]);
563: }
564: for (i=0; i<sf->nranks; i++) {
565: PetscMPIInt npoints;
566: PetscMPIIntCast(sf->roffset[i+1] - sf->roffset[i],&npoints);
567: MPI_Isend(sf->rremote+sf->roffset[i],npoints,MPIU_INT,sf->ranks[i],bas->tag,comm,&leafreqs[i]);
568: }
569: MPI_Waitall(bas->niranks,rootreqs,MPI_STATUSES_IGNORE);
570: MPI_Waitall(sf->nranks,leafreqs,MPI_STATUSES_IGNORE);
571: PetscFree(ilengths);
572: PetscFree2(rootreqs,leafreqs);
573: return(0);
574: }
578: static PetscErrorCode PetscSFBasicPackTypeSetup(PetscSFBasicPack link,MPI_Datatype unit)
579: {
581: PetscBool isInt,isPetscInt,isPetscReal,is2Int,is2PetscInt;
582: PetscInt nPetscIntContig,nPetscRealContig;
583: #if defined(PETSC_HAVE_COMPLEX)
584: PetscBool isPetscComplex;
585: PetscInt nPetscComplexContig;
586: #endif
589: MPIPetsc_Type_compare(unit,MPI_INT,&isInt);
590: MPIPetsc_Type_compare(unit,MPIU_INT,&isPetscInt);
591: MPIPetsc_Type_compare_contig(unit,MPIU_INT,&nPetscIntContig);
592: MPIPetsc_Type_compare(unit,MPIU_REAL,&isPetscReal);
593: MPIPetsc_Type_compare_contig(unit,MPIU_REAL,&nPetscRealContig);
594: #if defined(PETSC_HAVE_COMPLEX)
595: MPIPetsc_Type_compare(unit,MPIU_COMPLEX,&isPetscComplex);
596: MPIPetsc_Type_compare_contig(unit,MPIU_COMPLEX,&nPetscComplexContig);
597: #endif
598: MPIPetsc_Type_compare(unit,MPI_2INT,&is2Int);
599: MPIPetsc_Type_compare(unit,MPIU_2INT,&is2PetscInt);
600: link->bs = 1;
601: if (isInt) {PackInit_int(link); PackInit_Logical_int(link); PackInit_Bitwise_int(link);}
602: else if (isPetscInt) {PackInit_PetscInt(link); PackInit_Logical_PetscInt(link); PackInit_Bitwise_PetscInt(link);}
603: else if (isPetscReal) {PackInit_PetscReal(link); PackInit_Logical_PetscReal(link);}
604: #if defined(PETSC_HAVE_COMPLEX)
605: else if (isPetscComplex) PackInit_PetscComplex_1(link);
606: #endif
607: else if (is2Int) PackInit_int_int(link);
608: else if (is2PetscInt) PackInit_PetscInt_PetscInt(link);
609: else if (nPetscIntContig) {
610: if (nPetscIntContig%7 == 0) PackInit_PetscInt_7(link);
611: else if (nPetscIntContig%5 == 0) PackInit_PetscInt_5(link);
612: else if (nPetscIntContig%4 == 0) PackInit_PetscInt_4(link);
613: else if (nPetscIntContig%3 == 0) PackInit_PetscInt_3(link);
614: else if (nPetscIntContig%2 == 0) PackInit_PetscInt_2(link);
615: else PackInit_PetscInt(link);
616: link->bs = nPetscIntContig;
617: link->unitbytes *= nPetscIntContig;
618: } else if (nPetscRealContig) {
619: if (nPetscRealContig%7 == 0) PackInit_PetscReal_7(link);
620: else if (nPetscRealContig%5 == 0) PackInit_PetscReal_5(link);
621: else if (nPetscRealContig%4 == 0) PackInit_PetscReal_4(link);
622: else if (nPetscRealContig%3 == 0) PackInit_PetscReal_3(link);
623: else if (nPetscRealContig%2 == 0) PackInit_PetscReal_2(link);
624: else PackInit_PetscReal(link);
625: link->bs = nPetscRealContig;
626: link->unitbytes *= nPetscRealContig;
627: #if defined(PETSC_HAVE_COMPLEX)
628: } else if (nPetscComplexContig) {
629: if (nPetscComplexContig%7 == 0) PackInit_PetscComplex_7(link);
630: else if (nPetscComplexContig%5 == 0) PackInit_PetscComplex_5(link);
631: else if (nPetscComplexContig%4 == 0) PackInit_PetscComplex_4(link);
632: else if (nPetscComplexContig%3 == 0) PackInit_PetscComplex_3(link);
633: else if (nPetscComplexContig%2 == 0) PackInit_PetscComplex_2(link);
634: else PackInit_PetscComplex_1(link);
635: link->bs = nPetscComplexContig;
636: link->unitbytes *= nPetscComplexContig;
637: #endif
638: } else {
639: PetscMPIInt bytes;
640: MPI_Type_size(unit,&bytes);
641: if (bytes % sizeof(int)) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_SUP,"No support for type size not divisible by %D",sizeof(int));
642: switch (bytes / sizeof(int)) {
643: case 1: PackInit_block_int_1(link); break;
644: case 2: PackInit_block_int_2(link); break;
645: case 3: PackInit_block_int_3(link); break;
646: case 4: PackInit_block_int_4(link); break;
647: case 5: PackInit_block_int_5(link); break;
648: case 6: PackInit_block_int_6(link); break;
649: case 7: PackInit_block_int_7(link); break;
650: case 8: PackInit_block_int_8(link); break;
651: default: SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"No support for arbitrary block sizes");
652: }
653: }
654: MPI_Type_dup(unit,&link->unit);
655: return(0);
656: }
660: static PetscErrorCode PetscSFBasicPackGetUnpackOp(PetscSF sf,PetscSFBasicPack link,MPI_Op op,void (**UnpackOp)(PetscInt,PetscInt,const PetscInt*,void*,const void*))
661: {
663: *UnpackOp = NULL;
664: if (op == MPIU_REPLACE) *UnpackOp = link->UnpackInsert;
665: else if (op == MPI_SUM || op == MPIU_SUM) *UnpackOp = link->UnpackAdd;
666: else if (op == MPI_PROD) *UnpackOp = link->UnpackMult;
667: else if (op == MPI_MAX || op == MPIU_MAX) *UnpackOp = link->UnpackMax;
668: else if (op == MPI_MIN || op == MPIU_MIN) *UnpackOp = link->UnpackMin;
669: else if (op == MPI_LAND) *UnpackOp = link->UnpackLAND;
670: else if (op == MPI_BAND) *UnpackOp = link->UnpackBAND;
671: else if (op == MPI_LOR) *UnpackOp = link->UnpackLOR;
672: else if (op == MPI_BOR) *UnpackOp = link->UnpackBOR;
673: else if (op == MPI_LXOR) *UnpackOp = link->UnpackLXOR;
674: else if (op == MPI_BXOR) *UnpackOp = link->UnpackBXOR;
675: else if (op == MPI_MAXLOC) *UnpackOp = link->UnpackMaxloc;
676: else if (op == MPI_MINLOC) *UnpackOp = link->UnpackMinloc;
677: else SETERRQ(PetscObjectComm((PetscObject)sf),PETSC_ERR_SUP,"No support for MPI_Op");
678: return(0);
679: }
682: static PetscErrorCode PetscSFBasicPackGetFetchAndOp(PetscSF sf,PetscSFBasicPack link,MPI_Op op,void (**FetchAndOp)(PetscInt,PetscInt,const PetscInt*,void*,void*))
683: {
685: *FetchAndOp = NULL;
686: if (op == MPIU_REPLACE) *FetchAndOp = link->FetchAndInsert;
687: else if (op == MPI_SUM || op == MPIU_SUM) *FetchAndOp = link->FetchAndAdd;
688: else if (op == MPI_MAX || op == MPIU_MAX) *FetchAndOp = link->FetchAndMax;
689: else if (op == MPI_MIN || op == MPIU_MIN) *FetchAndOp = link->FetchAndMin;
690: else if (op == MPI_MAXLOC) *FetchAndOp = link->FetchAndMaxloc;
691: else if (op == MPI_MINLOC) *FetchAndOp = link->FetchAndMinloc;
692: else if (op == MPI_PROD) *FetchAndOp = link->FetchAndMult;
693: else if (op == MPI_LAND) *FetchAndOp = link->FetchAndLAND;
694: else if (op == MPI_BAND) *FetchAndOp = link->FetchAndBAND;
695: else if (op == MPI_LOR) *FetchAndOp = link->FetchAndLOR;
696: else if (op == MPI_BOR) *FetchAndOp = link->FetchAndBOR;
697: else if (op == MPI_LXOR) *FetchAndOp = link->FetchAndLXOR;
698: else if (op == MPI_BXOR) *FetchAndOp = link->FetchAndBXOR;
699: else SETERRQ(PetscObjectComm((PetscObject)sf),PETSC_ERR_SUP,"No support for MPI_Op");
700: return(0);
701: }
705: static PetscErrorCode PetscSFBasicPackGetReqs(PetscSF sf,PetscSFBasicPack link,MPI_Request **rootreqs,MPI_Request **leafreqs)
706: {
707: PetscSF_Basic *bas = (PetscSF_Basic*)sf->data;
710: if (rootreqs) *rootreqs = link->requests;
711: if (leafreqs) *leafreqs = link->requests + bas->niranks;
712: return(0);
713: }
717: static PetscErrorCode PetscSFBasicPackWaitall(PetscSF sf,PetscSFBasicPack link)
718: {
719: PetscSF_Basic *bas = (PetscSF_Basic*)sf->data;
723: MPI_Waitall(bas->niranks+sf->nranks,link->requests,MPI_STATUSES_IGNORE);
724: return(0);
725: }
729: static PetscErrorCode PetscSFBasicGetRootInfo(PetscSF sf,PetscInt *nrootranks,const PetscMPIInt **rootranks,const PetscInt **rootoffset,const PetscInt **rootloc)
730: {
731: PetscSF_Basic *bas = (PetscSF_Basic*)sf->data;
734: if (nrootranks) *nrootranks = bas->niranks;
735: if (rootranks) *rootranks = bas->iranks;
736: if (rootoffset) *rootoffset = bas->ioffset;
737: if (rootloc) *rootloc = bas->irootloc;
738: return(0);
739: }
743: static PetscErrorCode PetscSFBasicGetLeafInfo(PetscSF sf,PetscInt *nleafranks,const PetscMPIInt **leafranks,const PetscInt **leafoffset,const PetscInt **leafloc)
744: {
746: if (nleafranks) *nleafranks = sf->nranks;
747: if (leafranks) *leafranks = sf->ranks;
748: if (leafoffset) *leafoffset = sf->roffset;
749: if (leafloc) *leafloc = sf->rmine;
750: return(0);
751: }
755: static PetscErrorCode PetscSFBasicGetPack(PetscSF sf,MPI_Datatype unit,const void *key,PetscSFBasicPack *mylink)
756: {
757: PetscSF_Basic *bas = (PetscSF_Basic*)sf->data;
758: PetscErrorCode ierr;
759: PetscSFBasicPack link,*p;
760: PetscInt nrootranks,nleafranks;
761: const PetscInt *rootoffset,*leafoffset;
764: /* Look for types in cache */
765: for (p=&bas->avail; (link=*p); p=&link->next) {
766: PetscBool match;
767: MPIPetsc_Type_compare(unit,link->unit,&match);
768: if (match) {
769: *p = link->next; /* Remove from available list */
770: goto found;
771: }
772: }
774: /* Create new composite types for each send rank */
775: PetscSFBasicGetRootInfo(sf,&nrootranks,NULL,&rootoffset,NULL);
776: PetscSFBasicGetLeafInfo(sf,&nleafranks,NULL,&leafoffset,NULL);
777: PetscNew(&link);
778: PetscSFBasicPackTypeSetup(link,unit);
779: PetscMalloc2(rootoffset[nrootranks]*link->unitbytes,&link->root,leafoffset[nleafranks]*link->unitbytes,&link->leaf);
780: PetscMalloc1(nrootranks+nleafranks,&link->requests);
782: found:
783: link->key = key;
784: link->next = bas->inuse;
785: bas->inuse = link;
787: *mylink = link;
788: return(0);
789: }
793: static PetscErrorCode PetscSFBasicGetPackInUse(PetscSF sf,MPI_Datatype unit,const void *key,PetscCopyMode cmode,PetscSFBasicPack *mylink)
794: {
795: PetscSF_Basic *bas = (PetscSF_Basic*)sf->data;
796: PetscErrorCode ierr;
797: PetscSFBasicPack link,*p;
800: /* Look for types in cache */
801: for (p=&bas->inuse; (link=*p); p=&link->next) {
802: PetscBool match;
803: MPIPetsc_Type_compare(unit,link->unit,&match);
804: if (match && (key == link->key)) {
805: switch (cmode) {
806: case PETSC_OWN_POINTER: *p = link->next; break; /* Remove from inuse list */
807: case PETSC_USE_POINTER: break;
808: default: SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_INCOMP,"invalid cmode");
809: }
810: *mylink = link;
811: return(0);
812: }
813: }
814: SETERRQ(PetscObjectComm((PetscObject)sf),PETSC_ERR_ARG_WRONGSTATE,"Could not find pack");
815: return(0);
816: }
820: static PetscErrorCode PetscSFBasicReclaimPack(PetscSF sf,PetscSFBasicPack *link)
821: {
822: PetscSF_Basic *bas = (PetscSF_Basic*)sf->data;
825: (*link)->key = NULL;
826: (*link)->next = bas->avail;
827: bas->avail = *link;
828: *link = NULL;
829: return(0);
830: }
834: static PetscErrorCode PetscSFSetFromOptions_Basic(PetscOptions *PetscOptionsObject,PetscSF sf)
835: {
839: PetscOptionsHead(PetscOptionsObject,"PetscSF Basic options");
840: PetscOptionsTail();
841: return(0);
842: }
846: static PetscErrorCode PetscSFReset_Basic(PetscSF sf)
847: {
848: PetscSF_Basic *bas = (PetscSF_Basic*)sf->data;
849: PetscErrorCode ierr;
850: PetscSFBasicPack link,next;
853: PetscFree(bas->iranks);
854: PetscFree2(bas->ioffset,bas->irootloc);
855: if (bas->inuse) SETERRQ(PetscObjectComm((PetscObject)sf),PETSC_ERR_ARG_WRONGSTATE,"Outstanding operation has not been completed");
856: for (link=bas->avail; link; link=next) {
857: next = link->next;
858: #if defined(PETSC_HAVE_MPI_TYPE_DUP)
859: MPI_Type_free(&link->unit);
860: #endif
861: PetscFree2(link->root,link->leaf);
862: PetscFree(link->requests);
863: PetscFree(link);
864: }
865: bas->avail = NULL;
866: return(0);
867: }
871: static PetscErrorCode PetscSFDestroy_Basic(PetscSF sf)
872: {
876: PetscSFReset_Basic(sf);
877: PetscFree(sf->data);
878: return(0);
879: }
883: static PetscErrorCode PetscSFView_Basic(PetscSF sf,PetscViewer viewer)
884: {
885: /* PetscSF_Basic *bas = (PetscSF_Basic*)sf->data; */
887: PetscBool iascii;
890: PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii);
891: if (iascii) {
892: PetscViewerASCIIPrintf(viewer," sort=%s\n",sf->rankorder ? "rank-order" : "unordered");
893: }
894: return(0);
895: }
899: /* Send from roots to leaves */
900: static PetscErrorCode PetscSFBcastBegin_Basic(PetscSF sf,MPI_Datatype unit,const void *rootdata,void *leafdata)
901: {
902: PetscSF_Basic *bas = (PetscSF_Basic*)sf->data;
903: PetscErrorCode ierr;
904: PetscSFBasicPack link;
905: PetscInt i,nrootranks,nleafranks;
906: const PetscInt *rootoffset,*leafoffset,*rootloc,*leafloc;
907: const PetscMPIInt *rootranks,*leafranks;
908: MPI_Request *rootreqs,*leafreqs;
909: size_t unitbytes;
912: PetscSFBasicGetRootInfo(sf,&nrootranks,&rootranks,&rootoffset,&rootloc);
913: PetscSFBasicGetLeafInfo(sf,&nleafranks,&leafranks,&leafoffset,&leafloc);
914: PetscSFBasicGetPack(sf,unit,rootdata,&link);
916: unitbytes = link->unitbytes;
918: PetscSFBasicPackGetReqs(sf,link,&rootreqs,&leafreqs);
919: /* Eagerly post leaf receives */
920: for (i=0; i<nleafranks; i++) {
921: PetscMPIInt n = leafoffset[i+1] - leafoffset[i];
922: MPI_Irecv(link->leaf+leafoffset[i]*unitbytes,n,unit,leafranks[i],bas->tag,PetscObjectComm((PetscObject)sf),&leafreqs[i]);
923: }
924: /* Pack and send root data */
925: for (i=0; i<nrootranks; i++) {
926: PetscMPIInt n = rootoffset[i+1] - rootoffset[i];
927: void *packstart = link->root+rootoffset[i]*unitbytes;
928: (*link->Pack)(n,link->bs,rootloc+rootoffset[i],rootdata,packstart);
929: MPI_Isend(packstart,n,unit,rootranks[i],bas->tag,PetscObjectComm((PetscObject)sf),&rootreqs[i]);
930: }
931: return(0);
932: }
936: PetscErrorCode PetscSFBcastEnd_Basic(PetscSF sf,MPI_Datatype unit,const void *rootdata,void *leafdata)
937: {
938: PetscErrorCode ierr;
939: PetscSFBasicPack link;
940: PetscInt i,nleafranks;
941: const PetscInt *leafoffset,*leafloc;
944: PetscSFBasicGetPackInUse(sf,unit,rootdata,PETSC_OWN_POINTER,&link);
945: PetscSFBasicPackWaitall(sf,link);
946: PetscSFBasicGetLeafInfo(sf,&nleafranks,NULL,&leafoffset,&leafloc);
947: for (i=0; i<nleafranks; i++) {
948: PetscMPIInt n = leafoffset[i+1] - leafoffset[i];
949: const void *packstart = link->leaf+leafoffset[i]*link->unitbytes;
950: (*link->UnpackInsert)(n,link->bs,leafloc+leafoffset[i],leafdata,packstart);
951: }
952: PetscSFBasicReclaimPack(sf,&link);
953: return(0);
954: }
958: /* leaf -> root with reduction */
959: PetscErrorCode PetscSFReduceBegin_Basic(PetscSF sf,MPI_Datatype unit,const void *leafdata,void *rootdata,MPI_Op op)
960: {
961: PetscSF_Basic *bas = (PetscSF_Basic*)sf->data;
962: PetscSFBasicPack link;
963: PetscErrorCode ierr;
964: PetscInt i,nrootranks,nleafranks;
965: const PetscInt *rootoffset,*leafoffset,*rootloc,*leafloc;
966: const PetscMPIInt *rootranks,*leafranks;
967: MPI_Request *rootreqs,*leafreqs;
968: size_t unitbytes;
971: PetscSFBasicGetRootInfo(sf,&nrootranks,&rootranks,&rootoffset,&rootloc);
972: PetscSFBasicGetLeafInfo(sf,&nleafranks,&leafranks,&leafoffset,&leafloc);
973: PetscSFBasicGetPack(sf,unit,rootdata,&link);
975: unitbytes = link->unitbytes;
977: PetscSFBasicPackGetReqs(sf,link,&rootreqs,&leafreqs);
978: /* Eagerly post root receives */
979: for (i=0; i<nrootranks; i++) {
980: PetscMPIInt n = rootoffset[i+1] - rootoffset[i];
981: MPI_Irecv(link->root+rootoffset[i]*unitbytes,n,unit,rootranks[i],bas->tag,PetscObjectComm((PetscObject)sf),&rootreqs[i]);
982: }
983: /* Pack and send leaf data */
984: for (i=0; i<nleafranks; i++) {
985: PetscMPIInt n = leafoffset[i+1] - leafoffset[i];
986: void *packstart = link->leaf+leafoffset[i]*unitbytes;
987: (*link->Pack)(n,link->bs,leafloc+leafoffset[i],leafdata,packstart);
988: MPI_Isend(packstart,n,unit,leafranks[i],bas->tag,PetscObjectComm((PetscObject)sf),&leafreqs[i]);
989: }
990: return(0);
991: }
995: static PetscErrorCode PetscSFReduceEnd_Basic(PetscSF sf,MPI_Datatype unit,const void *leafdata,void *rootdata,MPI_Op op)
996: {
997: void (*UnpackOp)(PetscInt,PetscInt,const PetscInt*,void*,const void*);
998: PetscErrorCode ierr;
999: PetscSFBasicPack link;
1000: PetscInt i,nrootranks;
1001: const PetscInt *rootoffset,*rootloc;
1004: PetscSFBasicGetPackInUse(sf,unit,rootdata,PETSC_OWN_POINTER,&link);
1005: /* This implementation could be changed to unpack as receives arrive, at the cost of non-determinism */
1006: PetscSFBasicPackWaitall(sf,link);
1007: PetscSFBasicGetRootInfo(sf,&nrootranks,NULL,&rootoffset,&rootloc);
1008: PetscSFBasicPackGetUnpackOp(sf,link,op,&UnpackOp);
1009: for (i=0; i<nrootranks; i++) {
1010: PetscMPIInt n = rootoffset[i+1] - rootoffset[i];
1011: const void *packstart = link->root+rootoffset[i]*link->unitbytes;
1013: (*UnpackOp)(n,link->bs,rootloc+rootoffset[i],rootdata,packstart);
1014: }
1015: PetscSFBasicReclaimPack(sf,&link);
1016: return(0);
1017: }
1021: static PetscErrorCode PetscSFFetchAndOpBegin_Basic(PetscSF sf,MPI_Datatype unit,void *rootdata,const void *leafdata,void *leafupdate,MPI_Op op)
1022: {
1026: PetscSFReduceBegin_Basic(sf,unit,leafdata,rootdata,op);
1027: return(0);
1028: }
1032: static PetscErrorCode PetscSFFetchAndOpEnd_Basic(PetscSF sf,MPI_Datatype unit,void *rootdata,const void *leafdata,void *leafupdate,MPI_Op op)
1033: {
1034: PetscSF_Basic *bas = (PetscSF_Basic*)sf->data;
1035: void (*FetchAndOp)(PetscInt,PetscInt,const PetscInt*,void*,void*);
1036: PetscErrorCode ierr;
1037: PetscSFBasicPack link;
1038: PetscInt i,nrootranks,nleafranks;
1039: const PetscInt *rootoffset,*leafoffset,*rootloc,*leafloc;
1040: const PetscMPIInt *rootranks,*leafranks;
1041: MPI_Request *rootreqs,*leafreqs;
1042: size_t unitbytes;
1045: PetscSFBasicGetPackInUse(sf,unit,rootdata,PETSC_OWN_POINTER,&link);
1046: /* This implementation could be changed to unpack as receives arrive, at the cost of non-determinism */
1047: PetscSFBasicPackWaitall(sf,link);
1048: unitbytes = link->unitbytes;
1049: PetscSFBasicGetRootInfo(sf,&nrootranks,&rootranks,&rootoffset,&rootloc);
1050: PetscSFBasicGetLeafInfo(sf,&nleafranks,&leafranks,&leafoffset,&leafloc);
1051: PetscSFBasicPackGetReqs(sf,link,&rootreqs,&leafreqs);
1052: /* Post leaf receives */
1053: for (i=0; i<nleafranks; i++) {
1054: PetscMPIInt n = leafoffset[i+1] - leafoffset[i];
1055: MPI_Irecv(link->leaf+leafoffset[i]*unitbytes,n,unit,leafranks[i],bas->tag,PetscObjectComm((PetscObject)sf),&leafreqs[i]);
1056: }
1057: /* Process local fetch-and-op, post root sends */
1058: PetscSFBasicPackGetFetchAndOp(sf,link,op,&FetchAndOp);
1059: for (i=0; i<nrootranks; i++) {
1060: PetscMPIInt n = rootoffset[i+1] - rootoffset[i];
1061: void *packstart = link->root+rootoffset[i]*unitbytes;
1063: (*FetchAndOp)(n,link->bs,rootloc+rootoffset[i],rootdata,packstart);
1064: MPI_Isend(packstart,n,unit,rootranks[i],bas->tag,PetscObjectComm((PetscObject)sf),&rootreqs[i]);
1065: }
1066: PetscSFBasicPackWaitall(sf,link);
1067: for (i=0; i<nleafranks; i++) {
1068: PetscMPIInt n = leafoffset[i+1] - leafoffset[i];
1069: const void *packstart = link->leaf+leafoffset[i]*unitbytes;
1070: (*link->UnpackInsert)(n,link->bs,leafloc+leafoffset[i],leafupdate,packstart);
1071: }
1072: PetscSFBasicReclaimPack(sf,&link);
1073: return(0);
1074: }
1078: PETSC_EXTERN PetscErrorCode PetscSFCreate_Basic(PetscSF sf)
1079: {
1080: PetscSF_Basic *bas = (PetscSF_Basic*)sf->data;
1084: sf->ops->SetUp = PetscSFSetUp_Basic;
1085: sf->ops->SetFromOptions = PetscSFSetFromOptions_Basic;
1086: sf->ops->Reset = PetscSFReset_Basic;
1087: sf->ops->Destroy = PetscSFDestroy_Basic;
1088: sf->ops->View = PetscSFView_Basic;
1089: sf->ops->BcastBegin = PetscSFBcastBegin_Basic;
1090: sf->ops->BcastEnd = PetscSFBcastEnd_Basic;
1091: sf->ops->ReduceBegin = PetscSFReduceBegin_Basic;
1092: sf->ops->ReduceEnd = PetscSFReduceEnd_Basic;
1093: sf->ops->FetchAndOpBegin = PetscSFFetchAndOpBegin_Basic;
1094: sf->ops->FetchAndOpEnd = PetscSFFetchAndOpEnd_Basic;
1096: PetscNewLog(sf,&bas);
1097: sf->data = (void*)bas;
1098: return(0);
1099: }