--- MITgcm/tools/build_options/linux_amd64_ifort_beagle	2009/09/23 18:38:33	1.2
+++ MITgcm/tools/build_options/linux_amd64_ifort_beagle	2009/10/15 23:06:32	1.3
@@ -1,6 +1,6 @@
 #!/bin/bash
 #
-#  $Header: /home/ubuntu/mnt/e9_copy/MITgcm/tools/build_options/linux_amd64_ifort_beagle,v 1.2 2009/09/23 18:38:33 jmc Exp $
+#  $Header: /home/ubuntu/mnt/e9_copy/MITgcm/tools/build_options/linux_amd64_ifort_beagle,v 1.3 2009/10/15 23:06:32 jahn Exp $
 #  $Name:  $
 #
 #  These are the build options used with the Intel 10.x compiler for
@@ -41,7 +41,9 @@
 if test "x$IEEE" = x ; then
     #  No need for IEEE-754
     NOOPTFLAGS='-O2'
-    FOPTIM='-O3 -align'
+    # use this for exact checkpointing (slightly slower):
+    # FOPTIM='-O2 -pc64 -mieee-fp -align'
+    FOPTIM='-O2 -align'
     # ifort options:
     # -132        fixed-form line length is 132 characters
     # -r8         REAL is REAL*8