जैसा कि रोब लैथम ने कहा, पहले से मौजूद अच्छे समाधान नहीं हैं। टिम द्वारा दिए गए लिंक की मदद से मैंने यह फ़ंक्शन गिथूब पर उपलब्ध बनाया । मैंने आपके उदाहरण को contiguous + resize test ( यहाँ ) के लिए लिया और आउटपुट है
contiguous + resize
"(LB, -3), (MPI_INT, 0), (MPI_INT, 9), (UB, 15)"
इस फ़ंक्शन के साथ आपको बस करने की आवश्यकता है printMapDatatype(mydatatype)। मुझे आशा है कि यह वही था जो आप खोज रहे थे।
यहाँ केवल इस मामले में कार्य किया गया है:
MPI_Aint printdatatype( MPI_Datatype datatype, MPI_Aint prevExtentTot ) {
int *array_of_ints;
MPI_Aint *array_of_adds;
MPI_Datatype *array_of_dtypes;
int num_ints, num_adds, num_dtypes, combiner;
int i, j;
MPI_Type_get_envelope( datatype, &num_ints, &num_adds, &num_dtypes, &combiner );
array_of_ints = (int *) malloc( num_ints * sizeof(int) );
array_of_adds = (MPI_Aint *) malloc( num_adds * sizeof(MPI_Aint) );
array_of_dtypes = (MPI_Datatype *) malloc( num_dtypes * sizeof(MPI_Datatype) );
MPI_Aint extent, subExtent;
MPI_Type_extent(datatype, &extent);
switch (combiner) {
case MPI_COMBINER_NAMED:
// To print the specific type, we can match against the predefined forms.
if (datatype == MPI_BYTE) printf( "(MPI_BYTE, %ld)", prevExtentTot);
else if (datatype == MPI_LB) printf( "(MPI_LB, %ld)", prevExtentTot);
else if (datatype == MPI_PACKED) printf( "(MPI_PACKED, %ld)", prevExtentTot);
else if (datatype == MPI_UB) printf( "(MPI_UB, %ld)", prevExtentTot);
else if (datatype == MPI_CHAR) printf( "(MPI_CHAR, %ld)", prevExtentTot);
else if (datatype == MPI_DOUBLE) printf( "(MPI_DOUBLE, %ld)", prevExtentTot);
else if (datatype == MPI_FLOAT) printf( "(MPI_FLOAT, %ld)", prevExtentTot);
else if (datatype == MPI_INT) printf( "(MPI_INT, %ld)", prevExtentTot );
else if (datatype == MPI_LONG) printf( "(MPI_LONG, %ld)", prevExtentTot);
else if (datatype == MPI_LONG_DOUBLE) printf( "(MPI_LONG_DOUBLE, %ld)", prevExtentTot);
else if (datatype == MPI_LONG_LONG) printf( "(MPI_LONG_LONG, %ld)", prevExtentTot);
else if (datatype == MPI_LONG_LONG_INT) printf( "(MPI_LONG_LONG_INT, %ld)", prevExtentTot);
else if (datatype == MPI_SHORT) printf( "(MPI_SHORT, %ld)", prevExtentTot);
else if (datatype == MPI_SIGNED_CHAR) printf( "(MPI_SIGNED_CHAR, %ld)", prevExtentTot);
else if (datatype == MPI_UNSIGNED) printf( "(MPI_UNSIGNED, %ld)", prevExtentTot);
else if (datatype == MPI_UNSIGNED_CHAR) printf( "(MPI_UNSIGNED_CHAR, %ld)", prevExtentTot);
else if (datatype == MPI_UNSIGNED_LONG) printf( "(MPI_UNSIGNED_LONG, %ld)", prevExtentTot);
else if (datatype == MPI_UNSIGNED_LONG_LONG)printf( "(MPI_UNSIGNED_LONG_LONG, %ld)", prevExtentTot);
else if (datatype == MPI_UNSIGNED_SHORT) printf( "(MPI_UNSIGNED_SHORT, %ld)", prevExtentTot);
else if (datatype == MPI_WCHAR) printf( "(MPI_WCHAR, %ld)", prevExtentTot);
free( array_of_ints );
free( array_of_adds );
free( array_of_dtypes );
return prevExtentTot;
break;
case MPI_COMBINER_DUP:
MPI_Type_get_contents( datatype, num_ints, num_adds, num_dtypes, array_of_ints, array_of_adds, array_of_dtypes );
printdatatype( array_of_dtypes[0], prevExtentTot);
printf(", \n");
break;
case MPI_COMBINER_CONTIGUOUS:
MPI_Type_get_contents( datatype, num_ints, num_adds, num_dtypes, array_of_ints, array_of_adds, array_of_dtypes );
MPI_Type_extent(array_of_dtypes[0], &subExtent); // no need to do in loop because same type
for (i=0; i < array_of_ints[0]; i++) {
prevExtentTot = printdatatype( array_of_dtypes[0], prevExtentTot);
prevExtentTot += subExtent;
printf(", ");
}
break;
case MPI_COMBINER_VECTOR:
MPI_Type_get_contents( datatype, num_ints, num_adds, num_dtypes, array_of_ints, array_of_adds, array_of_dtypes );
MPI_Type_extent(array_of_dtypes[0], &subExtent); // no need to do in loop because same type
printf("[");
for (i = 0; i < array_of_ints[0]; i++) { //count
printf( "BL : %d - ", array_of_ints[1]);
for (j = 0; j < array_of_ints[2]; j++) { // stride
if (j < array_of_ints[1]) { // if in blocklength
prevExtentTot = printdatatype( array_of_dtypes[0], prevExtentTot);
printf(", ");
}
prevExtentTot += subExtent;
}
}
printf("], ");
break;
case MPI_COMBINER_HVECTOR:
case MPI_COMBINER_HVECTOR_INTEGER:{
MPI_Aint backupPrevExtent = prevExtentTot;
MPI_Type_get_contents( datatype, num_ints, num_adds, num_dtypes, array_of_ints, array_of_adds, array_of_dtypes );
MPI_Type_extent(array_of_dtypes[0], &subExtent); // no need to do in loop because same type
printf("[");
for (i = 0; i < array_of_ints[0]; i++) { //count
printf( "BL : %d - ", array_of_ints[1]);
for (j = 0; j < array_of_ints[1]; j++) { // blocklength
prevExtentTot = printdatatype( array_of_dtypes[0], prevExtentTot);
printf(", ");
prevExtentTot += subExtent;
}
prevExtentTot = backupPrevExtent + array_of_adds[0]; // + stride un byte
}
printf("], ");
break;
}
case MPI_COMBINER_INDEXED:{
MPI_Aint tmpPrevExtent;
int count, blocklength;
MPI_Type_get_contents( datatype, num_ints, num_adds, num_dtypes, array_of_ints, array_of_adds, array_of_dtypes );
MPI_Type_extent(array_of_dtypes[0], &subExtent); // no need to do in loop because same type
printf("<");
count = array_of_ints[0];
for (i = 0; i < count; i++) { // count
blocklength = array_of_ints[i + 1]; // array of blocklength
tmpPrevExtent = prevExtentTot;
tmpPrevExtent += array_of_ints[count + 1 + i] * subExtent; // + displacement * size of block
printf( "BL : %d - ", blocklength);
for (j = 0; j < blocklength; j++) { // blocklength
tmpPrevExtent = printdatatype( array_of_dtypes[0], tmpPrevExtent);
printf(", ");
tmpPrevExtent += subExtent;
}
}
printf(">, ");
prevExtentTot = tmpPrevExtent;
break;
}
case MPI_COMBINER_HINDEXED:
case MPI_COMBINER_HINDEXED_INTEGER:{
MPI_Aint tmpPrevExtent;
int count, blocklength;
MPI_Type_get_contents( datatype, num_ints, num_adds, num_dtypes, array_of_ints, array_of_adds, array_of_dtypes );
MPI_Type_extent(array_of_dtypes[0], &subExtent); // no need to do in loop because same type
printf("<");
count = array_of_ints[0];
for (i = 0; i < count; i++) { // count
blocklength = array_of_ints[i + 1]; // array of blocklength
tmpPrevExtent = prevExtentTot;
tmpPrevExtent += array_of_adds[i]; // + displacement in byte
printf( "BL : %d - ", blocklength);
for (j = 0; j < blocklength; j++) {
tmpPrevExtent = printdatatype( array_of_dtypes[0], tmpPrevExtent);
printf(", ");
tmpPrevExtent += subExtent;
}
}
printf(">, ");
prevExtentTot = tmpPrevExtent;
break;
}
case MPI_COMBINER_INDEXED_BLOCK:{
MPI_Aint tmpPrevExtent;
int count;
MPI_Type_get_contents( datatype, num_ints, num_adds, num_dtypes, array_of_ints, array_of_adds, array_of_dtypes );
MPI_Type_extent(array_of_dtypes[0], &subExtent); // no need to do in loop because same type
printf("<");
count = array_of_ints[0];
for (i = 0; i < count; i++) { // count
tmpPrevExtent = prevExtentTot;
tmpPrevExtent += array_of_ints[i + 2] * subExtent; // + displacement * size of block
printf( "BL : %d - ", array_of_ints[i + 1]);
for (j = 0; j < array_of_ints[1]; j++) { // blocklength
tmpPrevExtent = printdatatype( array_of_dtypes[0], tmpPrevExtent);
printf(", ");
tmpPrevExtent += subExtent;
}
}
printf(">, ");
prevExtentTot = tmpPrevExtent;
break;
}
case MPI_COMBINER_STRUCT:
case MPI_COMBINER_STRUCT_INTEGER:{
MPI_Aint tmpPrevExtent;
MPI_Type_get_contents( datatype, num_ints, num_adds, num_dtypes, array_of_ints, array_of_adds, array_of_dtypes );
printf( "{");
for (i = 0; i < array_of_ints[0]; i++) { // count
tmpPrevExtent = prevExtentTot + array_of_adds[i]; // origin + displacement
printf( "BL : %d - ", array_of_ints[i + 1]);
tmpPrevExtent = printdatatype( array_of_dtypes[i], tmpPrevExtent);
tmpPrevExtent += subExtent;
printf(", ");
}
printf("}, ");
prevExtentTot = tmpPrevExtent;
break;
}
case MPI_COMBINER_SUBARRAY:
// I don't know what is interresting to display here...
printf("... subarray not handled ...");
break;
case MPI_COMBINER_DARRAY:
// Same
printf("... darray not handled ...");
break;
case MPI_COMBINER_RESIZED:
MPI_Type_get_contents( datatype, num_ints, num_adds, num_dtypes, array_of_ints, array_of_adds, array_of_dtypes );
prevExtentTot = printdatatype( array_of_dtypes[0], prevExtentTot);
printf(", \n");
break;
default:
printf( "Unrecognized combiner type\n" );
}
free( array_of_ints );
free( array_of_adds );
free( array_of_dtypes );
return prevExtentTot;
}
void printMapDatatype(MPI_Datatype datatype) {
MPI_Aint lb, ub;
MPI_Type_lb(datatype, &lb);
MPI_Type_ub(datatype, &ub);
printf("\"(LB, %ld), ", lb);
printdatatype(datatype, 0);
printf("(UB, %ld)\"\n", ub);
}
MPI_Datatype, आप एक ऐसे फंक्शन की तलाश करते हैं, जो फॉर्म के एक स्ट्रिंग को लौटाता है, जो{(type, displacement), (type, displacement), ..}उक्त डेटाटाइप की संरचना का वर्णन करता है?