== '''How to make a parallel run for nemo v3_4''' ==
[[PageOutline]]

=== CONTROL key_mpp_mpi ===
 * Control that you have in your cpp_ORCA2_LIM3.fcm file key_mpp_mpi (normally it is present by default): [[BR]]
{{{
"key_mpp_mpi"
}}}

=== Configure config.card ===
 * Set same number of processors at compiling time in ORCA2_LIM/IGCM00/config.card: : [[BR]]
{{{
 #-- Total Number of Processors 
 JobNumProcTot=#proc at compiling time
}}}
 * Set a frequency for offline rebuild compatible with PeriodLength
{{{
RebuildFrequency=1Y
}}}

=== On ada ===
 * Enable multi NQS class :
{{{
#-- PBS Class (required on brodie mono/multi)
JobClass=multi
}}}
 * Enable run multi processors option in ORCA2_LIM/IGCM00/config.card: : [[BR]]
{{{
 #-- Run Options :
 JobRunOptions='"-np "${BATCH_NUM_PROC_TOT}"'
}}}