Add team information to the context

* Update roc_shmem_ctx_fence API to use team-relative PE numbering
* Update backend to populate team_opaque member of ROC_SHMEM_CTX_DEFAULT (used to store information about the team wrt TEAM_WORLD)

src/ipc/backend_ipc.cpp

@@ -82,10 +82,11 @@ IPCBackend::IPCBackend(MPI_Comm comm)
 
   allocate_atomic_region(&bp->atomic_ret, MAX_NUM_BLOCKS);
 
-  default_context_proxy_ = IPCDefaultContextProxyT(this);
-
   setup_team_world();
 
+  TeamInfo *tinfo = team_tracker.get_team_world()->tinfo_wrt_world;
+  default_context_proxy_ = IPCDefaultContextProxyT(this, tinfo);
+
   roc_shmem_collective_init();
 
   setup_fence_buffer();
@@ -143,6 +144,8 @@ __device__ bool IPCBackend::create_ctx(int64_t options, roc_shmem_ctx_t *ctx) {
   ctx_ = pop_result.value;
 
   ctx->ctx_opaque = ctx_;
+
+  ctx_->tinfo = reinterpret_cast<TeamInfo *>(ctx->team_opaque);
   return true;
 }