[RegCNET] Trouble in running MIT-Emanuel scheme

[Gao Xuejie]

Hi Mega,

When the model becomes unstable, you should decrease the dt, not increase. Try dt=150, or 120.

But from you error message of "forrtl: severe (174): SIGSEGV", maybe the ICBC file has some problem? Or you do not have enough hard disk space?

Good luck.

Gao

----- Original Message ----- 
From: "mega octaviani" <gorgeous_egha at yahoo.com>
To: <regcnet at lists.ictp.it>
Sent: Thursday, October 11, 2007 11:44 AM
Subject: Re: [RegCNET] Trouble in running MIT-Emanuel scheme


> Oups, 
> i am sorry,
> I have given you the wrong regcm.in
> That is for my other simulation.
> the true regcm.in that i run for mit-emanuel scheme is
> below: 
> 
> $restartparam
> ifrest  = .false. ,
> idate0  = 1997010100,
> idate1  = 1997010100,
> idate2  = 1997011100,
> nslice  =        120,
> $
> $timeparam
> radfrq  =    30.,
> abemh   =    18.,
> abatm   =   600.,
> dt      =   200.,
> ibdyfrq =          6,
> $
> $outparam
> ifsave  = .true. ,
>   savfrq  =    24.,
> iftape  = .true. ,
>   tapfrq  =     1.,
> ifrad   = .true. ,
>   radisp  =     1.,
> ifbat   = .true. ,
> ifsub   = .true. ,
>   batfrq  =     1.,
> ifprt   = .false.,
>   prtfrq  =    12.,
>   kxout   =          6,
>   jxsex   =         40,
> iotyp   =          1,
> ibintyp =          1,
> ifchem  = .false.,
>   chemfrq =     6.,
> $
> $physicsparam
> iboudy  =          5,
> ibltyp  =          1,
> icup    = 4,
>   igcc    = 1,
> ipptls  =          1,
> iocnflx = 2,
> ipgf    =          0,
> lakemod =          0,
> ichem   =          0,
> $
> $subexparam
> $
> $grellparam
> $
> $emanparam
> $
>  $chemparam
> idirect   =    1,
> chtrname  = '^@^@^@^@^@',
> chtrsol   =  0.00,
> chtrdpv   = 0.00000,0.00000,
> dustbsiz  =  0.00, 0.00,
> $
> Thank you for your respond
> 
> Regards,
> Mega
> 
> 
> --- Shahbaz Mehmood <shahbazmehmood at gmail.com> wrote:
> 
>> Hi
>> 
>> In the regcm.in attached you have set icup=2 while
>> for Emanuel scheme you
>> need to set icup=4.
>> 
>> Best regards.
>> shahbaz
>> 
>> Shahbaz Mehmood
>> Research Fellow (Climate Section)
>> Global Change Impact Studies Centre
>> 1st Floor, Saudi Pak Tower
>> 61/A, Jinnah Avenue
>> Islamabad, Pakistan
>> Ph#   +92-51-9219785
>> Cell#  +92-333-5481767
>> Fax#  +92-51-9219787
>> 
>> On 10/11/07, mega octaviani
>> <gorgeous_egha at yahoo.com> wrote:
>> >
>> > Dear all,
>> >
>> > I have tried to run a 60-km domain simulation (for
>> > South East Asia region) using MIT-Emanuel scheme
>> with
>> > the following set in regcm.in:
>> >
>> > $restartparam
>> > ifrest  = .false. ,
>> > idate0  = 1997010100,
>> > idate1  = 1997010100,
>> > idate2  = 1997011100,
>> > nslice  =        120,
>> > $
>> > $timeparam
>> > radfrq  =    30.,
>> > abemh   =    18.,
>> > abatm   =   600.,
>> > dt      =   200.,
>> > ibdyfrq =          6,
>> > $
>> > $outparam
>> > ifsave  = .true. ,
>> >   savfrq  =    24.,
>> > iftape  = .true. ,
>> >   tapfrq  =     1.,
>> > ifrad   = .true. ,
>> >   radisp  =     1.,
>> > ifbat   = .true. ,
>> > ifsub   = .true. ,
>> >   batfrq  =     1.,
>> > ifprt   = .false.,
>> >   prtfrq  =    12.,
>> >   kxout   =          6,
>> >   jxsex   =         40,
>> > iotyp   =          1,
>> > ibintyp =          1,
>> > ifchem  = .false.,
>> >   chemfrq =     6.,
>> > $
>> > $physicsparam
>> > iboudy  =          5,
>> > ibltyp  =          1,
>> > icup    = 2,
>> >   igcc    = 1,
>> > ipptls  =          1,
>> > iocnflx = 2,
>> > ipgf    =          0,
>> > lakemod =          0,
>> > ichem   =          0,
>> > $
>> > $subexparam
>> > $
>> > $grellparam
>> > $
>> > $emanparam
>> > $
>> > $chemparam
>> > idirect   =    1,
>> > chtrname  = '^@^@^@^@^@',
>> > chtrsol   =  0.00,
>> > chtrdpv   = 0.00000,0.00000,
>> > dustbsiz  =  0.00, 0.00,
>> > $
>> >
>> > I got the program crashed at the 6th day of my
>> > simulation with following error output:
>> >
>> > forrtl: severe (174): SIGSEGV, segmentation fault
>> > occurred
>> > Image     PC     Routine    Line     Source
>> > regcm  0805C8B4  Unknown    Unknown  Unknown
>> > regcm  0805BEF2  Unknown    Unknown  Unknown
>> > regcm  080ACEF4  Unknown    Unknown  Unknown
>> > regcm  080A644B  Unknown    Unknown  Unknown
>> > regcm  0804959A  Unknown    Unknown  Unknown
>> > libc.so.6  00714E23  Unknown   Unknown  Unknown
>> > regcm  080494D1  Unknown    Unknown  Unknown
>> >
>> > Then, i rerun again by increasing timestep 20%
>> from
>> > the  original and still face this problem. So,
>> please
>> > give me any suggestion to solve my problem, how
>> long
>> > the minimum timestep should be for using this
>> scheme?
>> >
>> > I appreaciate all attention and help and thank you
>> in
>> > advance.
>> >
>> > Kindly regards,
>> >
>> >
>> > Mega Octaviani
>> > MPhil Graduate Student
>> > Joint Graduate School of Energy and Environment
>> > (JGSEE)
>> > King Mongkut University of Technology Thonburi
>> (KMUTT)
>> > 126 Prachauthit Rd., Bangmod, Tungkru, Bangkok,
>> 10140,
>> > Thailand
>> > Tel: +662470-7332 (Comp Lab); +6683292-1547
>> (Mobile)
>> > Email: mega_st at jgsee.kmutt.ac.th;
>> gorgeous_egha at yahoo.com
>> >
>> >
>> >
>> >
>>
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>> 
>> 
>> --
>> 
> 
> 
> 
>       
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