If your PRECIS run stops unexpectedly (e.g. due to a powercut) then you do NOT need to begin the simulation from the beginning. Instead I would recommend restarting from the nearest completed season using the rerun command.
Typing
Quote:
rerun -iv [runid]
will give you a list of RCM restart dumps (i.e. files that contain all the RCM's prognostic variables at a particular time and date of the model simulation) that you can start from. In my case, this looks like this:
Quote:
"rerun -iv elsaa
--------------------------------------------------------------------------------
PRECIS version 1.9.3
RUNNING SCRIPT WITH ARGUMENTS:
/home/h04/pum/um/vn4.5/utils/rerun -iv elsaa
Wed Apr 10 12:47:27 BST 2013
--------------------------------------------------------------------------------
Permanent history file : /data/local/pum/um/elsaa/elsaa.phist
Possible restart times TYPE Restart dumps
---------------------------- ---- --------------------------------------------
calling um1time
h9310 = 1979/ 3/ 1 0:00:00z NRUN /data/local/pum/archive/elsaa/dumps/elsaaa.dah9310
calling um1time
calling um1time
h92p0 = 1979/ 2/25 0:00:00z NRUN /data/local/pum/um/elsaa/elsaaa.dah92p0
calling um1time
h92o0 = 1979/ 2/24 0:00:00z NRUN /data/local/pum/um/elsaa/elsaaa.dah92o0
calling um1time
h9250 = 1979/ 2/ 5 0:00:00z CRUN
calling um1time
h9210 = 1979/ 2/ 1 0:00:00z CRUN /data/local/pum/archive/elsaa/dumps/elsaaa.dah9210
calling um1time
---------------------------- ---- --------------------------------------------
NRUN = Model may be restarted from this time only as an NRUN
CRUN = Model may be restarted from this time as an NRUN or a CRUN
Directories searched for restart dumps:
/data/local/pum/um/elsaa
/data/local/pum/archive/elsaa/dumps
/data/local/pum/archive/elsaa
Information only: Experiment not restarted."
Choose the start of the current season where PRECIS has stopped (in my case March 1979 ,h9310 = 1979/ 3/ 1 0:00:00z) and type
Code:
rerun runid umdate Remaining_runlength (Y,M,D,h,m,s) NRUN
In my case:
Quote:
rerun elsaa h9310 2,8,0,0,0,0 NRUN
Since I want to start in March 1979 and then run for two years and eight months.
Precis will then run for a month . After this you should be able to restart your experiment by typing
Code:
restart [runid]
.