Configure Options on an IBM

checking for perl5... no
checking for perl... found /bin/perl (perl)
Will use NETCDF in dir: /usr/local/netcdf
PHDF5 not set in environment. Will configure WRF for use without.
$JASPERLIB or $JASPERINC not found in environment, configuring to build without grib2 I/O...
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Please select from among the following supported platforms.

1. AIX xlf compiler with xlc (serial)
2. AIX xlf compiler with xlc (smpar)
3. AIX xlf compiler with xlc (dmpar)
4. AIX xlf compiler with xlc (dm+sm)

Enter selection [1-4] :

**Note: Option 3 is recommended.