Update PMIx and PRRTE to reduce mpirun complexity

Use "prte" instead of "prun" for proxy execution of cmds like mpirun.
This avoids the fork/exec-rendezvous complexities and should result in
more reliable operation.

Signed-off-by: Ralph Castain <[email protected]>

Author: rhc54

ompi/tools/mpirun/Makefile.am

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2019      Intel, Inc.  All rights reserved.
+# Copyright (c) 2019-2020 Intel, Inc.  All rights reserved.
 # Copyright (c) 2020      IBM Corporation.  All rights reserved.
 # $COPYRIGHT$
 #
@@ -10,9 +10,9 @@
 
 if OMPI_WANT_PRRTE
 install-exec-hook:
-	(cd $(DESTDIR)$(bindir); rm -f mpirun$(EXEEXT); $(LN_S) prun$(EXEEXT) mpirun$(EXEEXT))
-	(cd $(DESTDIR)$(bindir); rm -f mpiexec$(EXEEXT); $(LN_S) prun$(EXEEXT) mpiexec$(EXEEXT))
-	(cd $(DESTDIR)$(bindir); rm -f oshrun$(EXEEXT); $(LN_S) prun$(EXEEXT) oshrun$(EXEEXT))
+	(cd $(DESTDIR)$(bindir); rm -f mpirun$(EXEEXT); $(LN_S) prte$(EXEEXT) mpirun$(EXEEXT))
+	(cd $(DESTDIR)$(bindir); rm -f mpiexec$(EXEEXT); $(LN_S) prte$(EXEEXT) mpiexec$(EXEEXT))
+	(cd $(DESTDIR)$(bindir); rm -f oshrun$(EXEEXT); $(LN_S) prte$(EXEEXT) oshrun$(EXEEXT))
 
 uninstall-local:
 	rm -f $(DESTDIR)$(bindir)/mpirun$(EXEEXT) \