Changeset 4624 for trunk/NEMOGCM/NEMO/TOP_SRC/trcnam.F90

Timestamp:

2014-04-28T14:09:03+02:00 (10 years ago)

Author:

acc

Message:

#1305. Fix slow start-up problems on some systems by introducing and using lwm logical to restrict output of merged namelists to the first (or only) processor. lwm is true only on the first processor regardless of ln_ctl. Small changes to all flavours of nemogcm.F90 are also required to write namctl and namcfg after the call to mynode which now opens output.namelist.dyn and writes nammpp.

File:

• trunk/NEMOGCM/NEMO/TOP_SRC/trcnam.F90 (modified) (5 diffs)

trunk/NEMOGCM/NEMO/TOP_SRC/trcnam.F90

@@ -128 +128 @@
          READ  ( numnat_cfg, namtrc_trd, IOSTAT = ios, ERR = 906 )
 906      IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtrc_trd in configuration namelist', lwp )
-         WRITE ( numont, namtrc_trd )
+         IF(lwm) WRITE ( numont, namtrc_trd )
 
          IF(lwp) THEN
@@ -187 +187 @@
       CALL ctl_opn( numnat_ref, 'namelist_top_ref'   , 'OLD'    , 'FORMATTED', 'SEQUENTIAL', -1, numout, .FALSE. )
       CALL ctl_opn( numnat_cfg, 'namelist_top_cfg'   , 'OLD'    , 'FORMATTED', 'SEQUENTIAL', -1, numout, .FALSE. )
-      CALL ctl_opn( numont    , 'output.namelist.top', 'UNKNOWN', 'FORMATTED', 'SEQUENTIAL', -1, numout, .FALSE., 1 )
+      IF(lwm) CALL ctl_opn( numont, 'output.namelist.top', 'UNKNOWN', 'FORMATTED', 'SEQUENTIAL', -1, numout, .FALSE., 1 )
 
       REWIND( numnat_ref )              ! Namelist namtrc in reference namelist : Passive tracer variables
@@ -196 +196 @@
       READ  ( numnat_cfg, namtrc_run, IOSTAT = ios, ERR = 902 )
 902   IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtrc in configuration namelist', lwp )
-      WRITE ( numont, namtrc_run )
+      IF(lwm) WRITE ( numont, namtrc_run )
 
       !  computes the first time step of tracer model
@@ -242 +242 @@
       READ  ( numnat_cfg, namtrc, IOSTAT = ios, ERR = 902 )
 902   IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtrc in configuration namelist', lwp )
-      WRITE ( numont, namtrc )
+      IF(lwm) WRITE ( numont, namtrc )
 
       DO jn = 1, jptra
@@ -291 +291 @@
       READ  ( numnat_cfg, namtrc_dia, IOSTAT = ios, ERR = 904 )
 904   IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtrc_dia in configuration namelist', lwp )
-      WRITE ( numont, namtrc_dia )
+      IF(lwm) WRITE ( numont, namtrc_dia )
 
       IF(lwp) THEN