[MITgcm-support] Optimization

[Matthew Mazloff]

Hi David,

I believe config_summary is only called once near the end of the  
initialization.

actually many of the routines you show are initialization routines.

I am not sure about your profile below, but I have a hunch you are not  
profiling a long enough run.  Profile a full run -- or at least an  
hour -- if you profile a ten minute run all you will see is that it  
takes a few minutes to initialize the model.

-Matt





On Jul 9, 2010, at 11:36 AM, David Lewis wrote:

> Hello all,
>
> I'm running a global circulation routine on mitgcm on 32 processor  
> and am looking to see if I can speed up the runtime.  I had an IT  
> person help and she sent me part of the profile (below).  Most of  
> the time seems to go into the routine "config_summary", which  
> appears to just be IO.  Is there any way I can reduce the number of  
> times this routine is called?  Does this have anything to do with  
> the generation of STDOUT files?
>
> Thanks for your help.
>
> David
>
> =========================================================
>   %   cumulative   self           self     total
>  time   seconds   seconds     calls     ms/call  ms/call  name
>  11.3      65.49    65.49  3103165     0.02      
> 0.02  .config_summary [3]
>   6.5     103.37     
> 37.88                                    ._tag_waiting [6]
>   4.8     131.09     
> 27.72                                    ._barrier_onnode [10]
>   3.9     153.69    22.60  2945398     0.01      
> 0.01  .initialise_varia [289]
>   3.2     172.27     
> 18.58                                    .gad_fluxlimit_adv_x [4]
>   3.1     190.12    17.85  1104516     0.02     0.03  .gad_advection  
> [8]
>   3.0     207.63    17.51  3155760     0.01      
> 0.01  .ini_cartesian_grid [26]
>   2.8     223.97     
> 16.34                                    .gad_del2 [11]
>   2.8     240.18    16.21  3155760     0.01      
> 0.01  .poe_remote_main [15]
>   2.8     256.35    16.17    52596     0.31        1.55  .ini_cg2d [2]
>   2.7     271.76    15.41  2103840     0.01     0.01  .find_rho_2d  
> [12]
>   2.6     286.68    14.92  2156436     0.01      
> 0.02  .calc_oce_mxlayer [7]
>   2.2     299.42     
> 12.74                                    .ini_depths [13]
>   2.2     311.92     
> 12.50                                    .__mcount [14]
>
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