OTF2: improve support for mpi communicators

src/parser/OTF2Parser/ParserDefinitionOTF2.cpp

@@ -315,7 +315,6 @@ OTF2_CallbackCode ParserDefinitionOTF2::handler_DefGroup(void *          /*userD
         g->_paradigm = paradigm;
         g->_flags = flags;
         g->_members.resize(numberOfMembers);
-        g->_membersSize = numberOfMembers;
         for(uint32_t i=0; i<numberOfMembers; i++) {
             g->_members[i] = members[i];
         }
@@ -465,20 +464,25 @@ OTF2_Location* ParserDefinitionOTF2::get_location_in_communicator(const OTF2_Com
                                                                   uint32_t rank) {
     struct OTF2_Comm * c= _comms[comm];
     if(!c) {
-        cerr<<"Error: cannot find communicator "<<comm<<endl;
-        abort();
+        cerr<<"Warning: cannot find communicator "<<comm<<endl;
+        // This is probably because the tracing tool did not support communicators
+        // Let's assume that rank is actually a locationRef
+        return get_location_by_id(rank);
     }
 
     struct OTF2_Group *g= _groups[c->_group];
     if(!g) {
-        cerr<<"Error: cannot find rank "<<rank<<" in communicator "<<comm<<endl;
-        abort();
+        cerr<<"Warning: cannot find rank "<<rank<<" in communicator "<<comm<<endl;
+        // This is probably because the tracing tool did not support communicators
+        // Let's assume that rank is actually a locationRef
+        return get_location_by_id(rank);
     }
 
     if(rank > g->_members.size()) {
-        cerr<<"Error: searching for rank "<<rank<<" in communicator "<<comm<<", but comm_size="<<g->_members.size()<<", memberSize="<<g->_membersSize<<endl;
-        *(int*)0=0;
-        abort();
+        cerr<<"Warning: searching for rank "<<rank<<" in communicator "<<comm<<", but comm_size="<<g->_members.size()<<endl;
+        // This is probably because the tracing tool did not support communicators
+        // Let's assume that rank is actually a locationRef
+        return get_location_by_id(rank);
     }
     return get_location_by_id(g->_members[rank]);
 }

src/parser/OTF2Parser/ParserDefinitionOTF2.hpp

@@ -172,7 +172,6 @@ struct OTF2_Group {
   OTF2_Paradigm   _paradigm;
   OTF2_GroupFlag  _flags;
   std::vector<uint64_t> _members;
-    size_t _membersSize;
 };
 
 struct OTF2_Comm {