Ocean script is NOT writing into the file in the first run

Dear all,

I have written a code which actually does SP analysis and also DC analysis for each corner.

I am writing the S21 wave using ocnPrint( ) for each corner into separate file.

I am also writing two MOS transistor "vds"  into two files  using  fprintf() command.

However, while  ocnPrint( ) is writing into file in the first run of the ocean script, the  fprintf() comand writing into the files after the 2nd RUN

In the first run  the files are created but they are empty. They are filledonly after 2nd run.

Can anybody please tell why this is happening.

 My OCEAN codeis as below:--

envSetVal("spectre.envOpts" "simOutputFormat" 'string "psfbin")
ocnWaveformTool( 'wavescan )
simulator( 'spectre )
design(     "/home/../.../spectre/schematic/netlist/netlist")
resultsDir( "/home/../simulation/../spectre/schematic" )


myCors = list("tt" "ss" "ff" )  ;;; Available corners

out0 = outfile("MOS_OPERATING_M0.txt" "w")
out1 = outfile("MOS_OPERATING_M1.txt" "w")
fprintf( out0 " %s  \n"  "vds_M0" )
fprintf( out1 " %s \n" "vds_M1" )

foreach(myModelSec myCors

myResultsDir = strcat("/home/../simulation/..spectre/schematic/")

resultsDir(myResultsDir)

modelFile(
'("/home/manas/work_cad/LNA_CORNER_dc.scs" "")
'..................

'.......................  
  
 list("/home/../MOS_MODEL.scs" myModelSec)
   
  )


analysis('sp ?ports list("/PORT1" "/PORT2")  ?start "4G"  ?stop "10G"  
        ?lin "10"  ?donoise "yes"  ?oprobe "/PORT2"  ?iprobe "/PORT1"  )
analysis('dc ?saveOppoint t ?oppoint "rawfile" )
desVar(      "input_power" 0    )
desVar(      "f1" 5.38G    )
desVar(      "f2" "f1+4M"    )
option(    'temp  "27.0"
)
ocnPrint(?output strcat("/home/../../S21_" myModelSec ".dat") ?numberNotation 'scientific s21_db20)

selectResult( 'dcOpInfo )
vds_M0=pv("/I42/M0" "vds")
vds_M1=pv("/I42/M1" "vds")

fprintf( out0 " %e \n" vds_M0)
fprintf( out1 " %e \n" vds_M1)

plot(db20(S21) ?expr list(strcat("S21_" myModelSec))

);;; End of Script