Actual source code: ex1.c
1: static const char help[] = "Test star forest communication (PetscSF)\n\n";
3: /*
4: Description: A star is a simple tree with one root and zero or more leaves.
5: A star forest is a union of disjoint stars.
6: Many common communication patterns can be expressed as updates of rootdata using leafdata and vice-versa.
7: This example creates a star forest, communicates values using the graph (see options for types of communication), views the graph, then destroys it.
8: */
10: /*
11: Include petscsf.h so we can use PetscSF objects. Note that this automatically
12: includes petscsys.h.
13: */
14: #include <petscsf.h>
15: #include <petscviewer.h>
17: /* like PetscSFView() but with alternative array of local indices */
18: static PetscErrorCode PetscSFViewCustomLocals_Private(PetscSF sf, const PetscInt locals[], PetscViewer viewer)
19: {
20: const PetscSFNode *iremote;
21: PetscInt i, nroots, nleaves, nranks;
22: PetscMPIInt rank;
24: PetscFunctionBeginUser;
25: PetscCallMPI(MPI_Comm_rank(PetscObjectComm((PetscObject)sf), &rank));
26: PetscCall(PetscSFGetGraph(sf, &nroots, &nleaves, NULL, &iremote));
27: PetscCall(PetscSFGetRootRanks(sf, &nranks, NULL, NULL, NULL, NULL));
28: PetscCall(PetscViewerASCIIPushTab(viewer));
29: PetscCall(PetscViewerASCIIPushSynchronized(viewer));
30: PetscCall(PetscViewerASCIISynchronizedPrintf(viewer, "[%d] Number of roots=%" PetscInt_FMT ", leaves=%" PetscInt_FMT ", remote ranks=%" PetscInt_FMT "\n", rank, nroots, nleaves, nranks));
31: for (i = 0; i < nleaves; i++) PetscCall(PetscViewerASCIISynchronizedPrintf(viewer, "[%d] %" PetscInt_FMT " <- (%" PetscInt_FMT ",%" PetscInt_FMT ")\n", rank, locals[i], iremote[i].rank, iremote[i].index));
32: PetscCall(PetscViewerFlush(viewer));
33: PetscCall(PetscViewerASCIIPopTab(viewer));
34: PetscCall(PetscViewerASCIIPopSynchronized(viewer));
35: PetscFunctionReturn(PETSC_SUCCESS);
36: }
38: int main(int argc, char **argv)
39: {
40: PetscInt i, bs = 2, nroots, nrootsalloc, nleaves, nleavesalloc, *mine, stride;
41: PetscSFNode *remote;
42: PetscMPIInt rank, size;
43: PetscSF sf, vsf;
44: PetscBool test_all, test_bcast, test_bcastop, test_reduce, test_degree, test_fetchandop, test_gather, test_scatter, test_embed, test_invert, test_sf_distribute, test_char, test_vector = PETSC_FALSE;
45: MPI_Op mop = MPI_OP_NULL; /* initialize to prevent compiler warnings with cxx_quad build */
46: char opstring[256];
47: PetscBool strflg;
49: PetscFunctionBeginUser;
50: PetscCall(PetscInitialize(&argc, &argv, (char *)0, help));
51: PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank));
52: PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size));
54: PetscOptionsBegin(PETSC_COMM_WORLD, "", "PetscSF Test Options", "none");
55: test_all = PETSC_FALSE;
56: PetscCall(PetscOptionsBool("-test_all", "Test all SF communications", "", test_all, &test_all, NULL));
57: test_bcast = test_all;
58: PetscCall(PetscOptionsBool("-test_bcast", "Test broadcast", "", test_bcast, &test_bcast, NULL));
59: test_bcastop = test_all;
60: PetscCall(PetscOptionsBool("-test_bcastop", "Test broadcast and reduce", "", test_bcastop, &test_bcastop, NULL));
61: test_reduce = test_all;
62: PetscCall(PetscOptionsBool("-test_reduce", "Test reduction", "", test_reduce, &test_reduce, NULL));
63: test_char = test_all;
64: PetscCall(PetscOptionsBool("-test_char", "Test signed char, unsigned char, and char", "", test_char, &test_char, NULL));
65: mop = MPI_SUM;
66: PetscCall(PetscStrncpy(opstring, "sum", sizeof(opstring)));
67: PetscCall(PetscOptionsString("-test_op", "Designate which MPI_Op to use", "", opstring, opstring, sizeof(opstring), NULL));
68: PetscCall(PetscStrcmp("sum", opstring, &strflg));
69: if (strflg) mop = MPIU_SUM;
70: PetscCall(PetscStrcmp("prod", opstring, &strflg));
71: if (strflg) mop = MPI_PROD;
72: PetscCall(PetscStrcmp("max", opstring, &strflg));
73: if (strflg) mop = MPI_MAX;
74: PetscCall(PetscStrcmp("min", opstring, &strflg));
75: if (strflg) mop = MPI_MIN;
76: PetscCall(PetscStrcmp("land", opstring, &strflg));
77: if (strflg) mop = MPI_LAND;
78: PetscCall(PetscStrcmp("band", opstring, &strflg));
79: if (strflg) mop = MPI_BAND;
80: PetscCall(PetscStrcmp("lor", opstring, &strflg));
81: if (strflg) mop = MPI_LOR;
82: PetscCall(PetscStrcmp("bor", opstring, &strflg));
83: if (strflg) mop = MPI_BOR;
84: PetscCall(PetscStrcmp("lxor", opstring, &strflg));
85: if (strflg) mop = MPI_LXOR;
86: PetscCall(PetscStrcmp("bxor", opstring, &strflg));
87: if (strflg) mop = MPI_BXOR;
88: test_degree = test_all;
89: PetscCall(PetscOptionsBool("-test_degree", "Test computation of vertex degree", "", test_degree, &test_degree, NULL));
90: test_fetchandop = test_all;
91: PetscCall(PetscOptionsBool("-test_fetchandop", "Test atomic Fetch-And-Op", "", test_fetchandop, &test_fetchandop, NULL));
92: test_gather = test_all;
93: PetscCall(PetscOptionsBool("-test_gather", "Test point gather", "", test_gather, &test_gather, NULL));
94: test_scatter = test_all;
95: PetscCall(PetscOptionsBool("-test_scatter", "Test point scatter", "", test_scatter, &test_scatter, NULL));
96: test_embed = test_all;
97: PetscCall(PetscOptionsBool("-test_embed", "Test point embed", "", test_embed, &test_embed, NULL));
98: test_invert = test_all;
99: PetscCall(PetscOptionsBool("-test_invert", "Test point invert", "", test_invert, &test_invert, NULL));
100: stride = 1;
101: PetscCall(PetscOptionsInt("-stride", "Stride for leaf and root data", "", stride, &stride, NULL));
102: test_sf_distribute = PETSC_FALSE;
103: PetscCall(PetscOptionsBool("-test_sf_distribute", "Create an SF that 'distributes' to each process, like an alltoall", "", test_sf_distribute, &test_sf_distribute, NULL));
104: PetscCall(PetscOptionsString("-test_op", "Designate which MPI_Op to use", "", opstring, opstring, sizeof(opstring), NULL));
105: PetscCall(PetscOptionsInt("-bs", "Block size for vectorial SF", "", bs, &bs, NULL));
106: PetscCall(PetscOptionsBool("-test_vector", "Run tests using the vectorial SF", "", test_vector, &test_vector, NULL));
107: PetscOptionsEnd();
109: if (test_sf_distribute) {
110: nroots = size;
111: nrootsalloc = size;
112: nleaves = size;
113: nleavesalloc = size;
114: mine = NULL;
115: PetscCall(PetscMalloc1(nleaves, &remote));
116: for (i = 0; i < size; i++) {
117: remote[i].rank = i;
118: remote[i].index = rank;
119: }
120: } else {
121: nroots = 2 + (PetscInt)(rank == 0);
122: nrootsalloc = nroots * stride;
123: nleaves = 2 + (PetscInt)(rank > 0);
124: nleavesalloc = nleaves * stride;
125: mine = NULL;
126: if (stride > 1) {
127: PetscInt i;
129: PetscCall(PetscMalloc1(nleaves, &mine));
130: for (i = 0; i < nleaves; i++) mine[i] = stride * i;
131: }
132: PetscCall(PetscMalloc1(nleaves, &remote));
133: /* Left periodic neighbor */
134: remote[0].rank = (rank + size - 1) % size;
135: remote[0].index = 1 * stride;
136: /* Right periodic neighbor */
137: remote[1].rank = (rank + 1) % size;
138: remote[1].index = 0 * stride;
139: if (rank > 0) { /* All processes reference rank 0, index 1 */
140: remote[2].rank = 0;
141: remote[2].index = 2 * stride;
142: }
143: }
145: /* Create a star forest for communication */
146: PetscCall(PetscSFCreate(PETSC_COMM_WORLD, &sf));
147: PetscCall(PetscSFSetFromOptions(sf));
148: PetscCall(PetscSFSetGraph(sf, nrootsalloc, nleaves, mine, PETSC_OWN_POINTER, remote, PETSC_OWN_POINTER));
149: PetscCall(PetscSFSetUp(sf));
151: /* We can also obtain a strided SF to communicate interleaved blocks of data */
152: PetscCall(PetscSFCreateStridedSF(sf, bs, PETSC_DECIDE, PETSC_DECIDE, &vsf));
153: if (test_vector) { /* perform all tests below using the vectorial SF */
154: PetscSF t = sf;
156: sf = vsf;
157: vsf = t;
159: nroots *= bs;
160: nleaves *= bs;
161: nrootsalloc *= bs;
162: nleavesalloc *= bs;
163: }
164: PetscCall(PetscSFDestroy(&vsf));
166: /* View graph, mostly useful for debugging purposes. */
167: PetscCall(PetscViewerPushFormat(PETSC_VIEWER_STDOUT_WORLD, PETSC_VIEWER_ASCII_INFO_DETAIL));
168: PetscCall(PetscSFView(sf, PETSC_VIEWER_STDOUT_WORLD));
169: PetscCall(PetscViewerPopFormat(PETSC_VIEWER_STDOUT_WORLD));
171: if (test_bcast) { /* broadcast rootdata into leafdata */
172: PetscInt *rootdata, *leafdata;
173: /* Allocate space for send and receive buffers. This example communicates PetscInt, but other types, including
174: * user-defined structures, could also be used. */
175: PetscCall(PetscMalloc2(nrootsalloc, &rootdata, nleavesalloc, &leafdata));
176: /* Set rootdata buffer to be broadcast */
177: for (i = 0; i < nrootsalloc; i++) rootdata[i] = -1;
178: for (i = 0; i < nroots; i++) rootdata[i * stride] = 100 * (rank + 1) + i;
179: /* Initialize local buffer, these values are never used. */
180: for (i = 0; i < nleavesalloc; i++) leafdata[i] = -1;
181: /* Broadcast entries from rootdata to leafdata. Computation or other communication can be performed between the begin and end calls. */
182: PetscCall(PetscSFBcastBegin(sf, MPIU_INT, rootdata, leafdata, MPI_REPLACE));
183: PetscCall(PetscSFBcastEnd(sf, MPIU_INT, rootdata, leafdata, MPI_REPLACE));
184: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Bcast Rootdata\n"));
185: PetscCall(PetscIntView(nrootsalloc, rootdata, PETSC_VIEWER_STDOUT_WORLD));
186: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Bcast Leafdata\n"));
187: PetscCall(PetscIntView(nleavesalloc, leafdata, PETSC_VIEWER_STDOUT_WORLD));
188: PetscCall(PetscFree2(rootdata, leafdata));
189: }
191: if (test_bcast && test_char) { /* Bcast with char */
192: PetscInt len;
193: char buf[256];
194: char *rootdata, *leafdata;
195: PetscCall(PetscMalloc2(nrootsalloc, &rootdata, nleavesalloc, &leafdata));
196: /* Set rootdata buffer to be broadcast */
197: for (i = 0; i < nrootsalloc; i++) rootdata[i] = '*';
198: for (i = 0; i < nroots; i++) rootdata[i * stride] = 'A' + rank * 3 + i; /* rank is very small, so it is fine to compute a char */
199: /* Initialize local buffer, these values are never used. */
200: for (i = 0; i < nleavesalloc; i++) leafdata[i] = '?';
202: PetscCall(PetscSFBcastBegin(sf, MPI_CHAR, rootdata, leafdata, MPI_REPLACE));
203: PetscCall(PetscSFBcastEnd(sf, MPI_CHAR, rootdata, leafdata, MPI_REPLACE));
205: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Bcast Rootdata in type of char\n"));
206: len = 0;
207: PetscCall(PetscSNPrintf(buf, 256, "%4d:", rank));
208: len += 5;
209: for (i = 0; i < nrootsalloc; i++) {
210: PetscCall(PetscSNPrintf(buf + len, 256 - len, "%5c", rootdata[i]));
211: len += 5;
212: }
213: PetscCall(PetscSynchronizedPrintf(PETSC_COMM_WORLD, "%s\n", buf));
214: PetscCall(PetscSynchronizedFlush(PETSC_COMM_WORLD, PETSC_STDOUT));
216: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Bcast Leafdata in type of char\n"));
217: len = 0;
218: PetscCall(PetscSNPrintf(buf, 256, "%4d:", rank));
219: len += 5;
220: for (i = 0; i < nleavesalloc; i++) {
221: PetscCall(PetscSNPrintf(buf + len, 256 - len, "%5c", leafdata[i]));
222: len += 5;
223: }
224: PetscCall(PetscSynchronizedPrintf(PETSC_COMM_WORLD, "%s\n", buf));
225: PetscCall(PetscSynchronizedFlush(PETSC_COMM_WORLD, PETSC_STDOUT));
227: PetscCall(PetscFree2(rootdata, leafdata));
228: }
230: if (test_bcastop) { /* Reduce rootdata into leafdata */
231: PetscInt *rootdata, *leafdata;
232: /* Allocate space for send and receive buffers. This example communicates PetscInt, but other types, including
233: * user-defined structures, could also be used. */
234: PetscCall(PetscMalloc2(nrootsalloc, &rootdata, nleavesalloc, &leafdata));
235: /* Set rootdata buffer to be broadcast */
236: for (i = 0; i < nrootsalloc; i++) rootdata[i] = -1;
237: for (i = 0; i < nroots; i++) rootdata[i * stride] = 100 * (rank + 1) + i;
238: /* Set leaf values to reduce with */
239: for (i = 0; i < nleavesalloc; i++) leafdata[i] = -10 * (rank + 1) - i;
240: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Pre-BcastAndOp Leafdata\n"));
241: PetscCall(PetscIntView(nleavesalloc, leafdata, PETSC_VIEWER_STDOUT_WORLD));
242: /* Broadcast entries from rootdata to leafdata. Computation or other communication can be performed between the begin and end calls. */
243: PetscCall(PetscSFBcastBegin(sf, MPIU_INT, rootdata, leafdata, mop));
244: PetscCall(PetscSFBcastEnd(sf, MPIU_INT, rootdata, leafdata, mop));
245: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## BcastAndOp Rootdata\n"));
246: PetscCall(PetscIntView(nrootsalloc, rootdata, PETSC_VIEWER_STDOUT_WORLD));
247: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## BcastAndOp Leafdata\n"));
248: PetscCall(PetscIntView(nleavesalloc, leafdata, PETSC_VIEWER_STDOUT_WORLD));
249: PetscCall(PetscFree2(rootdata, leafdata));
250: }
252: if (test_reduce) { /* Reduce leafdata into rootdata */
253: PetscInt *rootdata, *leafdata;
254: PetscCall(PetscMalloc2(nrootsalloc, &rootdata, nleavesalloc, &leafdata));
255: /* Initialize rootdata buffer in which the result of the reduction will appear. */
256: for (i = 0; i < nrootsalloc; i++) rootdata[i] = -1;
257: for (i = 0; i < nroots; i++) rootdata[i * stride] = 100 * (rank + 1) + i;
258: /* Set leaf values to reduce. */
259: for (i = 0; i < nleavesalloc; i++) leafdata[i] = -1;
260: for (i = 0; i < nleaves; i++) leafdata[i * stride] = 1000 * (rank + 1) + 10 * i;
261: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Pre-Reduce Rootdata\n"));
262: PetscCall(PetscIntView(nrootsalloc, rootdata, PETSC_VIEWER_STDOUT_WORLD));
263: /* Perform reduction. Computation or other communication can be performed between the begin and end calls.
264: * This example sums the values, but other MPI_Ops can be used (e.g MPI_MAX, MPI_PROD). */
265: PetscCall(PetscSFReduceBegin(sf, MPIU_INT, leafdata, rootdata, mop));
266: PetscCall(PetscSFReduceEnd(sf, MPIU_INT, leafdata, rootdata, mop));
267: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Reduce Leafdata\n"));
268: PetscCall(PetscIntView(nleavesalloc, leafdata, PETSC_VIEWER_STDOUT_WORLD));
269: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Reduce Rootdata\n"));
270: PetscCall(PetscIntView(nrootsalloc, rootdata, PETSC_VIEWER_STDOUT_WORLD));
271: PetscCall(PetscFree2(rootdata, leafdata));
272: }
274: if (test_reduce && test_char) { /* Reduce with signed char */
275: PetscInt len;
276: char buf[256];
277: signed char *rootdata, *leafdata;
278: PetscCall(PetscMalloc2(nrootsalloc, &rootdata, nleavesalloc, &leafdata));
279: /* Initialize rootdata buffer in which the result of the reduction will appear. */
280: for (i = 0; i < nrootsalloc; i++) rootdata[i] = -1;
281: for (i = 0; i < nroots; i++) rootdata[i * stride] = 10 * (rank + 1) + i;
282: /* Set leaf values to reduce. */
283: for (i = 0; i < nleavesalloc; i++) leafdata[i] = -1;
284: for (i = 0; i < nleaves; i++) leafdata[i * stride] = 50 * (rank + 1) + 10 * i;
285: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Pre-Reduce Rootdata in type of signed char\n"));
287: len = 0;
288: PetscCall(PetscSNPrintf(buf, 256, "%4d:", rank));
289: len += 5;
290: for (i = 0; i < nrootsalloc; i++) {
291: PetscCall(PetscSNPrintf(buf + len, 256 - len, "%5d", rootdata[i]));
292: len += 5;
293: }
294: PetscCall(PetscSynchronizedPrintf(PETSC_COMM_WORLD, "%s\n", buf));
295: PetscCall(PetscSynchronizedFlush(PETSC_COMM_WORLD, PETSC_STDOUT));
297: /* Using MPI_CHAR should trigger an error since MPI standard does not support reduction on MPI_CHAR.
298: Testing with -test_op max, one can see the sign does take effect in MPI_MAX.
299: */
300: PetscCall(PetscSFReduceBegin(sf, MPI_SIGNED_CHAR, leafdata, rootdata, mop));
301: PetscCall(PetscSFReduceEnd(sf, MPI_SIGNED_CHAR, leafdata, rootdata, mop));
303: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Reduce Leafdata in type of signed char\n"));
304: len = 0;
305: PetscCall(PetscSNPrintf(buf, 256, "%4d:", rank));
306: len += 5;
307: for (i = 0; i < nleavesalloc; i++) {
308: PetscCall(PetscSNPrintf(buf + len, 256 - len, "%5d", leafdata[i]));
309: len += 5;
310: }
311: PetscCall(PetscSynchronizedPrintf(PETSC_COMM_WORLD, "%s\n", buf));
312: PetscCall(PetscSynchronizedFlush(PETSC_COMM_WORLD, PETSC_STDOUT));
314: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Reduce Rootdata in type of signed char\n"));
315: len = 0;
316: PetscCall(PetscSNPrintf(buf, 256, "%4d:", rank));
317: len += 5;
318: for (i = 0; i < nrootsalloc; i++) {
319: PetscCall(PetscSNPrintf(buf + len, 256 - len, "%5d", rootdata[i]));
320: len += 5;
321: }
322: PetscCall(PetscSynchronizedPrintf(PETSC_COMM_WORLD, "%s\n", buf));
323: PetscCall(PetscSynchronizedFlush(PETSC_COMM_WORLD, PETSC_STDOUT));
325: PetscCall(PetscFree2(rootdata, leafdata));
326: }
328: if (test_reduce && test_char) { /* Reduce with unsigned char */
329: PetscInt len;
330: char buf[256];
331: unsigned char *rootdata, *leafdata;
332: PetscCall(PetscMalloc2(nrootsalloc, &rootdata, nleavesalloc, &leafdata));
333: /* Initialize rootdata buffer in which the result of the reduction will appear. */
334: for (i = 0; i < nrootsalloc; i++) rootdata[i] = 0;
335: for (i = 0; i < nroots; i++) rootdata[i * stride] = 10 * (rank + 1) + i;
336: /* Set leaf values to reduce. */
337: for (i = 0; i < nleavesalloc; i++) leafdata[i] = 0;
338: for (i = 0; i < nleaves; i++) leafdata[i * stride] = 50 * (rank + 1) + 10 * i;
339: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Pre-Reduce Rootdata in type of unsigned char\n"));
341: len = 0;
342: PetscCall(PetscSNPrintf(buf, 256, "%4d:", rank));
343: len += 5;
344: for (i = 0; i < nrootsalloc; i++) {
345: PetscCall(PetscSNPrintf(buf + len, 256 - len, "%5u", rootdata[i]));
346: len += 5;
347: }
348: PetscCall(PetscSynchronizedPrintf(PETSC_COMM_WORLD, "%s\n", buf));
349: PetscCall(PetscSynchronizedFlush(PETSC_COMM_WORLD, PETSC_STDOUT));
351: /* Using MPI_CHAR should trigger an error since MPI standard does not support reduction on MPI_CHAR.
352: Testing with -test_op max, one can see the sign does take effect in MPI_MAX.
353: */
354: PetscCall(PetscSFReduceBegin(sf, MPI_UNSIGNED_CHAR, leafdata, rootdata, mop));
355: PetscCall(PetscSFReduceEnd(sf, MPI_UNSIGNED_CHAR, leafdata, rootdata, mop));
357: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Reduce Leafdata in type of unsigned char\n"));
358: len = 0;
359: PetscCall(PetscSNPrintf(buf, 256, "%4d:", rank));
360: len += 5;
361: for (i = 0; i < nleavesalloc; i++) {
362: PetscCall(PetscSNPrintf(buf + len, 256 - len, "%5u", leafdata[i]));
363: len += 5;
364: }
365: PetscCall(PetscSynchronizedPrintf(PETSC_COMM_WORLD, "%s\n", buf));
366: PetscCall(PetscSynchronizedFlush(PETSC_COMM_WORLD, PETSC_STDOUT));
368: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Reduce Rootdata in type of unsigned char\n"));
369: len = 0;
370: PetscCall(PetscSNPrintf(buf, 256, "%4d:", rank));
371: len += 5;
372: for (i = 0; i < nrootsalloc; i++) {
373: PetscCall(PetscSNPrintf(buf + len, 256 - len, "%5u", rootdata[i]));
374: len += 5;
375: }
376: PetscCall(PetscSynchronizedPrintf(PETSC_COMM_WORLD, "%s\n", buf));
377: PetscCall(PetscSynchronizedFlush(PETSC_COMM_WORLD, PETSC_STDOUT));
379: PetscCall(PetscFree2(rootdata, leafdata));
380: }
382: if (test_degree) {
383: const PetscInt *degree;
384: PetscCall(PetscSFComputeDegreeBegin(sf, °ree));
385: PetscCall(PetscSFComputeDegreeEnd(sf, °ree));
386: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Root degrees\n"));
387: PetscCall(PetscIntView(nrootsalloc, degree, PETSC_VIEWER_STDOUT_WORLD));
388: }
390: if (test_fetchandop) {
391: /* Cannot use text compare here because token ordering is not deterministic */
392: PetscInt *leafdata, *leafupdate, *rootdata;
393: PetscCall(PetscMalloc3(nleavesalloc, &leafdata, nleavesalloc, &leafupdate, nrootsalloc, &rootdata));
394: for (i = 0; i < nleavesalloc; i++) leafdata[i] = -1;
395: for (i = 0; i < nleaves; i++) leafdata[i * stride] = 1;
396: for (i = 0; i < nrootsalloc; i++) rootdata[i] = -1;
397: for (i = 0; i < nroots; i++) rootdata[i * stride] = 0;
398: PetscCall(PetscSFFetchAndOpBegin(sf, MPIU_INT, rootdata, leafdata, leafupdate, mop));
399: PetscCall(PetscSFFetchAndOpEnd(sf, MPIU_INT, rootdata, leafdata, leafupdate, mop));
400: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Rootdata (sum of 1 from each leaf)\n"));
401: PetscCall(PetscIntView(nrootsalloc, rootdata, PETSC_VIEWER_STDOUT_WORLD));
402: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Leafupdate (value at roots prior to my atomic update)\n"));
403: PetscCall(PetscIntView(nleavesalloc, leafupdate, PETSC_VIEWER_STDOUT_WORLD));
404: PetscCall(PetscFree3(leafdata, leafupdate, rootdata));
405: }
407: if (test_gather) {
408: const PetscInt *degree;
409: PetscInt inedges, *indata, *outdata;
410: PetscCall(PetscSFComputeDegreeBegin(sf, °ree));
411: PetscCall(PetscSFComputeDegreeEnd(sf, °ree));
412: for (i = 0, inedges = 0; i < nrootsalloc; i++) inedges += degree[i];
413: PetscCall(PetscMalloc2(inedges, &indata, nleavesalloc, &outdata));
414: for (i = 0; i < nleavesalloc; i++) outdata[i] = -1;
415: for (i = 0; i < nleaves; i++) outdata[i * stride] = 1000 * (rank + 1) + i;
416: PetscCall(PetscSFGatherBegin(sf, MPIU_INT, outdata, indata));
417: PetscCall(PetscSFGatherEnd(sf, MPIU_INT, outdata, indata));
418: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Gathered data at multi-roots from leaves\n"));
419: PetscCall(PetscIntView(inedges, indata, PETSC_VIEWER_STDOUT_WORLD));
420: PetscCall(PetscFree2(indata, outdata));
421: }
423: if (test_scatter) {
424: const PetscInt *degree;
425: PetscInt j, count, inedges, *indata, *outdata;
426: PetscCall(PetscSFComputeDegreeBegin(sf, °ree));
427: PetscCall(PetscSFComputeDegreeEnd(sf, °ree));
428: for (i = 0, inedges = 0; i < nrootsalloc; i++) inedges += degree[i];
429: PetscCall(PetscMalloc2(inedges, &indata, nleavesalloc, &outdata));
430: for (i = 0; i < nleavesalloc; i++) outdata[i] = -1;
431: for (i = 0, count = 0; i < nrootsalloc; i++) {
432: for (j = 0; j < degree[i]; j++) indata[count++] = 1000 * (rank + 1) + 100 * i + j;
433: }
434: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Data at multi-roots, to scatter to leaves\n"));
435: PetscCall(PetscIntView(inedges, indata, PETSC_VIEWER_STDOUT_WORLD));
437: PetscCall(PetscSFScatterBegin(sf, MPIU_INT, indata, outdata));
438: PetscCall(PetscSFScatterEnd(sf, MPIU_INT, indata, outdata));
439: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Scattered data at leaves\n"));
440: PetscCall(PetscIntView(nleavesalloc, outdata, PETSC_VIEWER_STDOUT_WORLD));
441: PetscCall(PetscFree2(indata, outdata));
442: }
444: if (test_embed) {
445: const PetscInt nroots = 1 + (PetscInt)(rank == 0);
446: PetscInt selected[2];
447: PetscSF esf;
449: selected[0] = stride;
450: selected[1] = 2 * stride;
451: PetscCall(PetscSFCreateEmbeddedRootSF(sf, nroots, selected, &esf));
452: PetscCall(PetscSFSetUp(esf));
453: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Embedded PetscSF\n"));
454: PetscCall(PetscViewerPushFormat(PETSC_VIEWER_STDOUT_WORLD, PETSC_VIEWER_ASCII_INFO_DETAIL));
455: PetscCall(PetscSFView(esf, PETSC_VIEWER_STDOUT_WORLD));
456: PetscCall(PetscViewerPopFormat(PETSC_VIEWER_STDOUT_WORLD));
457: PetscCall(PetscSFDestroy(&esf));
458: }
460: if (test_invert) {
461: const PetscInt *degree;
462: PetscInt *mRootsOrigNumbering;
463: PetscInt inedges;
464: PetscSF msf, imsf;
466: PetscCall(PetscSFGetMultiSF(sf, &msf));
467: PetscCall(PetscSFCreateInverseSF(msf, &imsf));
468: PetscCall(PetscSFSetUp(msf));
469: PetscCall(PetscSFSetUp(imsf));
470: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Multi-SF\n"));
471: PetscCall(PetscSFView(msf, PETSC_VIEWER_STDOUT_WORLD));
472: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Multi-SF roots indices in original SF roots numbering\n"));
473: PetscCall(PetscSFComputeDegreeBegin(sf, °ree));
474: PetscCall(PetscSFComputeDegreeEnd(sf, °ree));
475: PetscCall(PetscSFComputeMultiRootOriginalNumbering(sf, degree, &inedges, &mRootsOrigNumbering));
476: PetscCall(PetscIntView(inedges, mRootsOrigNumbering, PETSC_VIEWER_STDOUT_WORLD));
477: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Inverse of Multi-SF\n"));
478: PetscCall(PetscSFView(imsf, PETSC_VIEWER_STDOUT_WORLD));
479: PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "## Inverse of Multi-SF, original numbering\n"));
480: PetscCall(PetscSFViewCustomLocals_Private(imsf, mRootsOrigNumbering, PETSC_VIEWER_STDOUT_WORLD));
481: PetscCall(PetscSFDestroy(&imsf));
482: PetscCall(PetscFree(mRootsOrigNumbering));
483: }
485: /* Clean storage for star forest. */
486: PetscCall(PetscSFDestroy(&sf));
487: PetscCall(PetscFinalize());
488: return 0;
489: }
491: /*TEST
493: test:
494: nsize: 4
495: filter: grep -v "type" | grep -v "sort"
496: args: -test_bcast -sf_type window -sf_window_sync {{fence active lock}} -sf_window_flavor {{create dynamic allocate}}
497: requires: defined(PETSC_HAVE_MPI_ONE_SIDED) defined(PETSC_HAVE_MPI_FEATURE_DYNAMIC_WINDOW)
499: test:
500: suffix: 2
501: nsize: 4
502: filter: grep -v "type" | grep -v "sort"
503: args: -test_reduce -sf_type window -sf_window_sync {{fence active lock}} -sf_window_flavor {{create dynamic allocate}}
504: requires: defined(PETSC_HAVE_MPI_ONE_SIDED) defined(PETSC_HAVE_MPI_FEATURE_DYNAMIC_WINDOW)
506: test:
507: suffix: 2_basic
508: nsize: 4
509: args: -test_reduce -sf_type basic
511: test:
512: suffix: 3
513: nsize: 4
514: filter: grep -v "type" | grep -v "sort"
515: args: -test_degree -sf_type window -sf_window_sync {{fence active lock}} -sf_window_flavor {{create dynamic allocate}}
516: requires: defined(PETSC_HAVE_MPI_ONE_SIDED) defined(PETSC_HAVE_MPI_FEATURE_DYNAMIC_WINDOW)
518: test:
519: suffix: 3_basic
520: nsize: 4
521: args: -test_degree -sf_type basic
523: test:
524: suffix: 4
525: nsize: 4
526: filter: grep -v "type" | grep -v "sort"
527: args: -test_gather -sf_type window -sf_window_sync {{fence active lock}} -sf_window_flavor {{create dynamic allocate}}
528: requires: defined(PETSC_HAVE_MPI_ONE_SIDED) defined(PETSC_HAVE_MPI_FEATURE_DYNAMIC_WINDOW)
530: test:
531: suffix: 4_basic
532: nsize: 4
533: args: -test_gather -sf_type basic
535: test:
536: suffix: 4_stride
537: nsize: 4
538: args: -test_gather -sf_type basic -stride 2
540: test:
541: suffix: 5
542: nsize: 4
543: filter: grep -v "type" | grep -v "sort"
544: args: -test_scatter -sf_type window -sf_window_sync {{fence active lock}} -sf_window_flavor {{create dynamic allocate}}
545: requires: defined(PETSC_HAVE_MPI_ONE_SIDED) defined(PETSC_HAVE_MPI_FEATURE_DYNAMIC_WINDOW)
547: test:
548: suffix: 5_basic
549: nsize: 4
550: args: -test_scatter -sf_type basic
552: test:
553: suffix: 5_stride
554: nsize: 4
555: args: -test_scatter -sf_type basic -stride 2
557: test:
558: suffix: 6
559: nsize: 4
560: filter: grep -v "type" | grep -v "sort"
561: # No -sf_window_flavor dynamic due to bug https://gitlab.com/petsc/petsc/issues/555
562: args: -test_embed -sf_type window -sf_window_sync {{fence active lock}} -sf_window_flavor {{create allocate}}
563: requires: defined(PETSC_HAVE_MPI_ONE_SIDED) defined(PETSC_HAVE_MPI_FEATURE_DYNAMIC_WINDOW)
565: test:
566: suffix: 6_basic
567: nsize: 4
568: args: -test_embed -sf_type basic
570: test:
571: suffix: 7
572: nsize: 4
573: filter: grep -v "type" | grep -v "sort"
574: args: -test_invert -sf_type window -sf_window_sync {{fence active lock}} -sf_window_flavor {{create dynamic allocate}}
575: requires: defined(PETSC_HAVE_MPI_ONE_SIDED) defined(PETSC_HAVE_MPI_FEATURE_DYNAMIC_WINDOW)
577: test:
578: suffix: 7_basic
579: nsize: 4
580: args: -test_invert -sf_type basic
582: test:
583: suffix: basic
584: nsize: 4
585: args: -test_bcast -sf_type basic
586: output_file: output/ex1_1_basic.out
588: test:
589: suffix: bcastop_basic
590: nsize: 4
591: args: -test_bcastop -sf_type basic
592: output_file: output/ex1_bcastop_basic.out
594: test:
595: suffix: 8
596: nsize: 3
597: filter: grep -v "type" | grep -v "sort"
598: args: -test_bcast -test_sf_distribute -sf_type window -sf_window_sync {{fence active lock}} -sf_window_flavor {{create dynamic allocate}}
599: requires: defined(PETSC_HAVE_MPI_ONE_SIDED) defined(PETSC_HAVE_MPI_FEATURE_DYNAMIC_WINDOW)
601: test:
602: suffix: 8_basic
603: nsize: 3
604: args: -test_bcast -test_sf_distribute -sf_type basic
606: test:
607: suffix: 9_char
608: nsize: 4
609: args: -sf_type basic -test_bcast -test_reduce -test_op max -test_char
611: # Here we do not test -sf_window_flavor dynamic since it is designed for repeated SFs with few different rootdata pointers
612: test:
613: suffix: 10
614: filter: grep -v "type" | grep -v "sort"
615: nsize: 4
616: args: -sf_type window -sf_window_sync {{fence active lock}} -sf_window_flavor {{create allocate}} -test_all -test_bcastop 0 -test_fetchandop 0
617: requires: defined(PETSC_HAVE_MPI_ONE_SIDED) defined(PETSC_HAVE_MPI_FEATURE_DYNAMIC_WINDOW)
619: # The nightly test suite with MPICH uses ch3:sock, which is broken when winsize == 0 in some of the processes
620: test:
621: suffix: 10_shared
622: output_file: output/ex1_10.out
623: filter: grep -v "type" | grep -v "sort"
624: nsize: 4
625: args: -sf_type window -sf_window_sync {{fence active lock}} -sf_window_flavor shared -test_all -test_bcastop 0 -test_fetchandop 0
626: requires: defined(PETSC_HAVE_MPI_PROCESS_SHARED_MEMORY) !defined(PETSC_HAVE_MPICH_NUMVERSION) defined(PETSC_HAVE_MPI_ONE_SIDED) defined(PETSC_HAVE_MPI_FEATURE_DYNAMIC_WINDOW)
628: test:
629: suffix: 10_basic
630: nsize: 4
631: args: -sf_type basic -test_all -test_bcastop 0 -test_fetchandop 0
633: test:
634: suffix: 10_basic_vector
635: nsize: 4
636: args: -sf_type basic -test_all -test_bcastop 0 -test_fetchandop 0 -test_vector
638: TEST*/