diff --git a/armci/src-gemini/armci.c b/armci/src-gemini/armci.c
index d7e760199..8aa4213a7 100644
--- a/armci/src-gemini/armci.c
+++ b/armci/src-gemini/armci.c
@@ -238,6 +238,12 @@ void ARMCI_Error(char *msg, int code)
     armci_die(msg,code);
 }
 
+/* Define this function so that all codes compile */
+int ARMCI_Active_rank()
+{
+  return 1;
+}
+
 
 void armci_allocate_locks()
 {
diff --git a/armci/src-gemini/armci.h b/armci/src-gemini/armci.h
index 643240cb2..4a5e4245f 100644
--- a/armci/src-gemini/armci.h
+++ b/armci/src-gemini/armci.h
@@ -26,6 +26,7 @@ extern int armci_notify(int proc);
 extern int armci_notify_wait(int proc,int *pval);
 extern int ARMCI_Init(void);    /* initialize ARMCI */
 extern int ARMCI_Init_mpi_comm(MPI_Comm comm);    /* initialize ARMCI */
+extern int ARMCI_Active_rank();
 extern int ARMCI_Init_args(int *argc, char ***argv);
 extern void ARMCI_Barrier(void);    /* ARMCI Barrier*/
 
diff --git a/armci/src-portals/armci.c b/armci/src-portals/armci.c
index 99d55a72e..3fcffedad 100644
--- a/armci/src-portals/armci.c
+++ b/armci/src-portals/armci.c
@@ -234,6 +234,12 @@ void ARMCI_Error(char *msg, int code)
     armci_die(msg,code);
 }
 
+/* Define this function so that all codes compile */
+int ARMCI_Active_rank()
+{ 
+    return 1;
+}
+
 
 void armci_allocate_locks()
 {
diff --git a/armci/src-portals/armci.h b/armci/src-portals/armci.h
index fe5fef018..88ad805f6 100644
--- a/armci/src-portals/armci.h
+++ b/armci/src-portals/armci.h
@@ -26,6 +26,7 @@ extern int armci_notify(int proc);
 extern int armci_notify_wait(int proc,int *pval);
 extern int ARMCI_Init(void);    /* initialize ARMCI */
 extern int ARMCI_Init_mpi_comm(MPI_Comm comm);    /* initialize ARMCI */
+extern int ARMCI_Active_rank();
 extern int ARMCI_Init_args(int *argc, char ***argv);
 extern void ARMCI_Barrier(void);    /* ARMCI Barrier*/
 
diff --git a/armci/src/common/armci.c b/armci/src/common/armci.c
index 5d4876dd4..c91126886 100644
--- a/armci/src/common/armci.c
+++ b/armci/src/common/armci.c
@@ -208,6 +208,14 @@ void ARMCI_Error(char *msg, int code)
     armci_die(msg,code);
 }
 
+/* This is used in some of the MPI-based runtimes to support initialization
+ * using a communicator. Include it here so all codes compile.
+ */
+int ARMCI_Active_rank()
+{
+  return 1;
+}
+
 
 
 void armci_allocate_locks()
diff --git a/armci/src/include/armci.h b/armci/src/include/armci.h
index fddfefe56..369eff989 100644
--- a/armci/src/include/armci.h
+++ b/armci/src/include/armci.h
@@ -30,6 +30,7 @@ extern int ARMCI_Init(void);    /* initialize ARMCI */
 #ifdef MSG_COMMS_MPI
 extern int ARMCI_Init_mpi_comm(MPI_Comm comm);    /* initialize ARMCI */
 #endif
+extern int ARMCI_Active_rank();
 
 extern int ARMCI_Init_args(int *argc, char ***argv); /* initialize ARMCI */
 extern int ARMCI_Initialized();
diff --git a/comex/src-armci/armci.c b/comex/src-armci/armci.c
index 47649f353..ee4bba4b3 100644
--- a/comex/src-armci/armci.c
+++ b/comex/src-armci/armci.c
@@ -445,6 +445,10 @@ int PARMCI_Initialized()
     return comex_initialized();
 }
 
+int ARMCI_Active_rank()
+{
+    return comex_active_rank();
+}
 
 void PARMCI_Lock(int mutex, int proc)
 {
diff --git a/comex/src-armci/armci.h b/comex/src-armci/armci.h
index da5ed1300..234baed4a 100644
--- a/comex/src-armci/armci.h
+++ b/comex/src-armci/armci.h
@@ -26,6 +26,7 @@ extern int armci_notify_wait(int proc,int *pval);
 extern int ARMCI_Init();    /* initialize ARMCI */
 extern int ARMCI_Init_args(int *argc, char ***argv); /* initialize ARMCI */
 extern int ARMCI_Init_mpi_comm(MPI_Comm comm); /* initialize ARMCI with external communicator */
+extern int ARMCI_Active_rank();
 extern int ARMCI_Initialized();
 extern void ARMCI_Barrier();    /* ARMCI Barrier*/
 
diff --git a/comex/src-common/comex.h b/comex/src-common/comex.h
index 726b62b8f..c985688c2 100644
--- a/comex/src-common/comex.h
+++ b/comex/src-common/comex.h
@@ -64,6 +64,17 @@ extern int comex_init_args(int *argc, char ***argv);
  */
 extern int comex_init_comm(MPI_Comm);
 
+/**
+ * Returns status of rank with respect to user visibility.
+ * This function is true if this rank is visible to the
+ * application, false otherwise. Used in conjunction with
+ * comex_init_comm.
+ *
+ * @return 1 if rank is visible to application
+ *         0 otherwise
+ */
+extern int comex_active_rank();
+
 /**
  * Test whether comex has been initialized.
  *
diff --git a/comex/src-dmapp/comex.c b/comex/src-dmapp/comex.c
index 63dff0a12..6357c8330 100644
--- a/comex/src-dmapp/comex.c
+++ b/comex/src-dmapp/comex.c
@@ -1075,6 +1075,11 @@ int comex_init_comm(MPI_Comm comm)
   return _comex_init(comm);
 }
 
+int comex_active_rank()
+{
+  return 1;
+}
+
 
 int comex_init_args(int *argc, char ***argv)
 {
diff --git a/comex/src-mpi-mt/comex.c b/comex/src-mpi-mt/comex.c
index b58da872d..e3ba76f6e 100644
--- a/comex/src-mpi-mt/comex.c
+++ b/comex/src-mpi-mt/comex.c
@@ -363,6 +363,11 @@ int comex_init_comm(MPI_Comm comm)
   return _comex_init(comm);
 }
 
+int comex_active_rank()
+{
+  return 1;
+}
+
 
 int comex_init_args(int *argc, char ***argv)
 {
diff --git a/comex/src-mpi-pr/comex.c b/comex/src-mpi-pr/comex.c
index 633eef364..709d0ec69 100644
--- a/comex/src-mpi-pr/comex.c
+++ b/comex/src-mpi-pr/comex.c
@@ -722,6 +722,11 @@ int comex_init_comm(MPI_Comm comm)
   return _comex_init(comm);
 }
 
+int comex_active_rank()
+{
+  return g_state.master[g_state.rank] != g_state.rank ? 1 : 0;
+}
+
 
 int comex_init_args(int *argc, char ***argv)
 {
diff --git a/comex/src-mpi-pt/comex.c b/comex/src-mpi-pt/comex.c
index 8143b30cf..14ba946e1 100644
--- a/comex/src-mpi-pt/comex.c
+++ b/comex/src-mpi-pt/comex.c
@@ -422,6 +422,11 @@ int comex_init_comm(MPI_Comm comm)
   return _comex_init(comm);
 }
 
+int comex_active_rank()
+{
+  return g_state.master[g_state.rank] != g_state.rank ? 1 : 0;
+}
+
 
 int comex_init_args(int *argc, char ***argv)
 {
diff --git a/comex/src-mpi/comex.c b/comex/src-mpi/comex.c
index edcc98110..adbff98ac 100644
--- a/comex/src-mpi/comex.c
+++ b/comex/src-mpi/comex.c
@@ -1427,6 +1427,11 @@ int comex_init_comm(MPI_Comm comm)
   return _comex_init(comm);
 }
 
+int comex_init_comm()
+{
+  return 1;
+}
+
 
 int comex_init_args(int *argc, char ***argv)
 {
diff --git a/comex/src-mpi3/comex.c b/comex/src-mpi3/comex.c
index 787bcc326..14e04d5dd 100644
--- a/comex/src-mpi3/comex.c
+++ b/comex/src-mpi3/comex.c
@@ -319,6 +319,11 @@ int comex_init_comm(MPI_Comm comm)
   return _comex_init(comm);
 }
 
+int comex_active_rank()
+{
+  return 1;
+}
+
 
 int comex_init_args(int *argc, char ***argv)
 {
diff --git a/comex/src-ofa/comex.c b/comex/src-ofa/comex.c
index 53855e000..88044b42c 100644
--- a/comex/src-ofa/comex.c
+++ b/comex/src-ofa/comex.c
@@ -289,6 +289,11 @@ int comex_init_comm(MPI_Comm comm)
   return _comex_init(comm);
 }
 
+int comex_active_rank()
+{
+  return 1;
+}
+
 int comex_init_args(int *argc, char ***argv)
 {
     int rc;
diff --git a/comex/src-ofi/comex.c b/comex/src-ofi/comex.c
index 3dc5a4197..dd4cbc7c8 100644
--- a/comex/src-ofi/comex.c
+++ b/comex/src-ofi/comex.c
@@ -1250,6 +1250,11 @@ int comex_init_comm(MPI_Comm comm)
   return _comex_init(comm);
 }
 
+int comex_active_rank()
+{
+  return 1;
+}
+
 int comex_init_args(int* argc, char*** argv)
 {
     int init_flag;
diff --git a/comex/src-portals4/comex.c b/comex/src-portals4/comex.c
index 4f7ba5de8..00149291a 100644
--- a/comex/src-portals4/comex.c
+++ b/comex/src-portals4/comex.c
@@ -346,6 +346,10 @@ int comex_init_comm(MPI_Comm comm)
   return _comex_init(comm);
 }
 
+int return comex_active_rank()
+{
+  return 1;
+}
 
 int comex_init_args(int *argc, char ***argv)
 {
diff --git a/comex/src-template/comex.c b/comex/src-template/comex.c
index 48a06fcf2..525d3ee9c 100644
--- a/comex/src-template/comex.c
+++ b/comex/src-template/comex.c
@@ -98,6 +98,48 @@ int comex_init_args(int *argc, char ***argv)
     return comex_init();
 }
 
+int comex_init_comm(MPI_Comm comm)
+{
+    int status;
+
+    if (initialized) {
+        return 0;
+    }
+    initialized = 1;
+
+    /* Assert MPI has been initialized */
+    int init_flag;
+    status = MPI_Initialized(&init_flag);
+    assert(MPI_SUCCESS == status);
+    assert(init_flag);
+
+    /* Duplicate the World Communicator */
+    status = MPI_Comm_dup(comm, &(l_state.world_comm));
+    assert(MPI_SUCCESS == status);
+    assert(l_state.world_comm);
+
+    /* My Rank */
+    status = MPI_Comm_rank(l_state.world_comm, &(l_state.rank));
+    assert(MPI_SUCCESS == status);
+
+    /* World Size */
+    status = MPI_Comm_size(l_state.world_comm, &(l_state.size));
+    assert(MPI_SUCCESS == status);
+
+    /* groups */
+    comex_group_init();
+
+    /* Synch - Sanity Check */
+    MPI_Barrier(l_state.world_comm);
+
+    return COMEX_SUCCESS;
+}
+
+int comex_active_rank()
+{
+  return 1;
+}
+
 
 int comex_initialized()
 {
diff --git a/global/src/base.c b/global/src/base.c
index fe0e93cc8..db190c2d8 100644
--- a/global/src/base.c
+++ b/global/src/base.c
@@ -525,6 +525,18 @@ int pnga_initialize_comm(MPI_Comm comm)
 }
 #endif
 
+/**
+ * Return status of processor with respect to visibility to user application.
+ * This function returns 1 if application can see this processor, 0 otherwise.
+ */
+#if HAVE_SYS_WEAK_ALIAS_PRAGMA
+#   pragma weak wnga_active_rank = pnga_active_rank
+#endif
+logical pnga_active_rank()
+{
+  return ARMCI_Active_rank();
+}
+
 #if HAVE_SYS_WEAK_ALIAS_PRAGMA
 #   pragma weak wnga_initialized = pnga_initialized
 #endif
diff --git a/global/src/capi.c b/global/src/capi.c
index a80787f87..f71dc391a 100644
--- a/global/src/capi.c
+++ b/global/src/capi.c
@@ -131,6 +131,16 @@ int NGA_Initialize_comm(MPI_Comm comm)
   return wnga_initialize_comm(comm);
 }
 
+int GA_Active_rank()
+{
+  return wnga_active_rank();
+}
+
+int NGA_Active_rank()
+{
+  return wnga_active_rank();
+}
+
 int GA_Initialized()
 {
     return wnga_initialized();
diff --git a/global/src/cnames.h b/global/src/cnames.h
index 0752d9c1d..a708070a9 100644
--- a/global/src/cnames.h
+++ b/global/src/cnames.h
@@ -1,3 +1,15 @@
+#define ga_active_rank_ F77_FUNC_(ga_active_rank, GA_ACTIVE_RANK)
+#define ga_cactive_rank_ F77_FUNC_(ga_cactive_rank, GA_CACTIVE_RANK)
+#define ga_dactive_rank_ F77_FUNC_(ga_dactive_rank, GA_DACTIVE_RANK)
+#define ga_iactive_rank_ F77_FUNC_(ga_iactive_rank, GA_IACTIVE_RANK)
+#define ga_sactive_rank_ F77_FUNC_(ga_sactive_rank, GA_SACTIVE_RANK)
+#define ga_zactive_rank_ F77_FUNC_(ga_zactive_rank, GA_ZACTIVE_RANK)
+#define nga_active_rank_ F77_FUNC_(nga_active_rank, NGA_ACTIVE_RANK)
+#define nga_cactive_rank_ F77_FUNC_(nga_cactive_rank, NGA_CACTIVE_RANK)
+#define nga_dactive_rank_ F77_FUNC_(nga_dactive_rank, NGA_DACTIVE_RANK)
+#define nga_iactive_rank_ F77_FUNC_(nga_iactive_rank, NGA_IACTIVE_RANK)
+#define nga_sactive_rank_ F77_FUNC_(nga_sactive_rank, NGA_SACTIVE_RANK)
+#define nga_zactive_rank_ F77_FUNC_(nga_zactive_rank, NGA_ZACTIVE_RANK)
 #define ga_allocate_  F77_FUNC_(ga_allocate, GA_ALLOCATE)
 #define ga_deallocate_  F77_FUNC_(ga_deallocate, GA_DEALLOCATE)
 #define ga_callocate_ F77_FUNC_(ga_callocate,GA_CALLOCATE)
diff --git a/global/src/fapi.c b/global/src/fapi.c
index 66dd84a48..cf4123d43 100644
--- a/global/src/fapi.c
+++ b/global/src/fapi.c
@@ -480,6 +480,16 @@ logical FATR nga_initialize_comm_(MPI_Comm comm)
   return wnga_initialize_comm(comm);
 }
 
+logical FATR ga_active_rank()
+{
+  return wnga_active_rank();
+}
+
+logical FATR nga_active_rank()
+{
+  return wnga_active_rank();
+}
+
 void FATR ga_initialize_ltd_(Integer *limit)
 {
   _ga_initialize_f=1;
diff --git a/global/src/ga-papi.h b/global/src/ga-papi.h
index 6baedbe78..52e9b89d5 100644
--- a/global/src/ga-papi.h
+++ b/global/src/ga-papi.h
@@ -13,6 +13,7 @@ typedef intp AccessIndex;
 /* Routines from base.c */
 extern void pnga_version(Integer *major, Integer *minor, Integer *patch);
 extern logical pnga_allocate(Integer g_a);
+extern logical pnga_active_rank();
 extern logical pnga_deallocate(Integer g_a);
 extern logical pnga_compare_distr(Integer g_a, Integer g_b);
 extern logical pnga_create(Integer type, Integer ndim,
diff --git a/global/src/ga.h b/global/src/ga.h
index e19eb1a17..aa9e03b36 100644
--- a/global/src/ga.h
+++ b/global/src/ga.h
@@ -19,6 +19,7 @@ typedef Integer ga_nbhdl_t;
 
 extern void          GA_Abs_value(int g_a); 
 extern void          GA_Abs_value_patch(int g_a, int *lo, int *hi);
+extern int           GA_Active_rank();
 extern void          GA_Add_constant(int g_a, void* alpha);
 extern void          GA_Add_constant_patch(int g,int *lo,int *hi,void *alpha);
 extern void          GA_Add_diagonal(int g_a, int g_v);
@@ -199,6 +200,7 @@ extern void          NGA_Access_ghost_element(int g_a,  void *ptr, int subscript
 extern void          NGA_Access_ghosts(int g_a, int dims[], void *ptr, int ld[]);
 extern void          NGA_Access(int g_a, int lo[], int hi[], void *ptr, int ld[]);
 extern void          NGA_Acc(int g_a, int lo[], int hi[],void* buf,int ld[],void* alpha);
+extern int           NGA_Active_rank();
 extern void          NGA_Add_patch(void * alpha, int g_a, int alo[], int ahi[], void * beta,  int g_b, int blo[], int bhi[], int g_c, int clo[], int chi[]);
 extern int           NGA_Allocate(int g_a);
 extern void          NGA_Alloc_gatscat_buf(int nelems);
diff --git a/global/src/global.fh.in b/global/src/global.fh.in
index a316022fb..26c900ca4 100644
--- a/global/src/global.fh.in
+++ b/global/src/global.fh.in
@@ -4,6 +4,7 @@
 !
       logical          ga_allocate
       logical          ga_deallocate
+      logical          ga_active_rank
       complex          ga_cdot
       complex          ga_cdot_patch
       integer          ga_cluster_nnodes
@@ -76,6 +77,7 @@
       double complex   ga_zdot_patch
       logical          nga_allocate
       logical          nga_deallocate
+      logical          nga_active_rank
       complex          nga_cdot
       complex          nga_cdot_patch
       integer          nga_cluster_nnodes