The netCDF operators NCO version 3.9.4 are ready.
http://nco.sf.net (Homepage)
http://dust.ess.uci.edu/nco (Homepage "mirror")
This release improves the NCO multi-slabbing algorithm (MSA),
supports CF-convention auxiliary lat+lon coordinates,
synchronizes with the latest netCDF4 beta releases,
and adds powerful new masking capabilities to ncap2.
A. ncks supports hyperslab specification with CF auxiliary coordinates
for standard_name=latitude, longitude. (Karen Schuchardt)
http://nco.sf.net/nco.html#aux
B. New ncks Multi-Slabbing Algorithm (MSA) switch:
When --msa_usr_rdr (MSA user order) is specified, hyperslabbed
coordinate(s) will appear in the output file in the order of the
input multi-slabs. The output coordinate will only be monotonic
if the user specifies the multi-slabs in a monotonic order.
This option significantly improves performance on complex
multi-slab operations. (Henry Butowsky)
C. Operators given -3 switch will (attempt to) produce netCDF3 output,
even if input files are netCDF4. Converse of -4 switch behavior.
Same as --fl_fmt=classic
D. File "consanguinity": output file format defaults to input format
E. Cleanup cygwin builds for WIN32
F. OpenMP builds of ncap2 with pgCC
G. AIX configure finds atan2() for ncap2
H. mpncrcat works with netCDF4 (Takeshi Enomoto)
I. ncks prints netCDF4 LZ compression information to stdout
http://nco.sf.net/nco.html#ncks
J. ncap2 uses OpenMP more, writes nco_openmp_thread_number (Henry Butowsky)
http://nco.sf.net/nco.html#openmp
K. ncap2 prints attributes, supports atan2() and pow() (Henry Butowsky)
Demonstration scripts ~/nco/data/ncap2_tst.nco
L. Pre-built, up-to-date, Debian Sid & Ubuntu binaries are available.
http://nco.sf.net#debian
M. Pre-built, up-to-date, RPM packages are available.
http://nco.sf.net#rpm
N. Did you try SWAMP (Script Workflow Analysis for MultiProcessing)?
SWAMP efficiently schedules and executes NCO scripts on remote servers:
http://swamp.googlecode.com
SWAMP can work with with any command-line operator analysis scripts--
not just NCO. If you must transfer lots of data from a server to your
client before you analyze it, then SWAMP may speed things up.
Try SWAMP give us your feedback.
O. Reminder: NCO support for netCDF4 features is tracked at
http://nco.sf.net/nco.html#nco4
NCO currently supports netCDF4 atomic data types and compression.
NCO 3.9.4 with netCDF4 support should work with HDF5 1.8 beta2
and netCDF4 snapshot20070822 and newer.
export NETCDF4_ROOT=/usr/local/netcdf4 # Set netCDF4 location
cd ~/nco;./configure --enable-netcdf4 # Configure mechanism -or-
cd ~/nco/bld;./make NETCDF4=Y allinone # Old Makefile mechanism
Enjoy,
Charlie
--
Charlie Zender, Department of Earth System Science, UC Irvine
Sab. at CNRS/LGGE-Grenoble until 20080715 :) 011+33+476+824236
Laboratoire de Glaciologie et Géophysique de l'Environnement
54 rue Molière BP 96, 38402 Saint Martin d'Hères Cedex, France
