mirror of
https://github.com/Unidata/netcdf-c.git
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276 lines
6.1 KiB
C
276 lines
6.1 KiB
C
/*! \file
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Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
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2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
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2015, 2016, 2017, 2018
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University Corporation for Atmospheric Research/Unidata.
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See \ref copyright file for more info.
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*/
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/*
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Create a netcdf-4 file with horrendously large metadata.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include <assert.h>
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#include <netcdf.h>
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#endif
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#undef DEBUG
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/*
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Total number of groups is NGROUPS^TREEDEPTH
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TREEDEPTH = Depth of the group tree
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NGROUPS = Number subgroups per group
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NGROUPATTRS = Number group attributes per group
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NDIMS = Number dimensions per group
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NTYPES = Number user types per group
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NVARS = Number of variables per group
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VARRANK = Rank of variables: must be <= NDIMS
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NVARATTRS = Number attributes per variable
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*/
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/* Define the Defaults */
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#if 1
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#define TREEDEPTH 6
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#define NGROUPS 2
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#define NGROUPATTRS 100
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#define NDIMS 100
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#define NTYPES 10
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#define NVARS 100
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#define VARRANK 2
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#define NVARATTRS 500
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#endif
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/* Alternate Defaults for testing*/
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#if 0
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#define TREEDEPTH 2
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#define NGROUPS 2
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#define NGROUPATTRS 2
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#define NDIMS 2
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#define NTYPES 2
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#define NVARS 2
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#define VARRANK 2
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#define NVARATTRS NGROUPATTRS
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#endif
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#define FILE "bigmeta.nc"
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#define CHECK(expr) assert((expr) == NC_NOERR)
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static int treedepth = TREEDEPTH;
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static int ngroups = NGROUPS;
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static int ngroupattrs = NGROUPATTRS;
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static int ndims = NDIMS;
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static int ntypes = NTYPES;
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static int nvars = NVARS;
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static int varrank = VARRANK;
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static int nvarattrs = NVARATTRS;
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/* Define the getopt tags */
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#define OPT_UNKNOWN 0
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#define OPT_TREEDEPTH 1
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#define OPT_NGROUPS 2
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#define OPT_NGROUPATTRS 3
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#define OPT_NDIMS 4
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#define OPT_NTYPES 5
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#define OPT_NVARS 6
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#define OPT_VARRANK 7
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#define OPT_NVARATTRS 8
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static struct option options[] = {
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{"treedepth", 1, NULL, OPT_TREEDEPTH},
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{"ngroups", 1, NULL, OPT_NGROUPS},
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{"ngroupattrs", 1, NULL, OPT_NGROUPATTRS},
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{"ndims", 1, NULL, OPT_NDIMS},
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{"ntypes", 1, NULL, OPT_NTYPES},
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{"nvars", 1, NULL, OPT_NVARS},
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{"varrank", 1, NULL, OPT_VARRANK},
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{"nvarattrs", 1, NULL, OPT_NVARATTRS},
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{NULL, 0, NULL, 0}
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};
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/**************************************************/
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static void
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reportparameters(void)
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{
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fprintf(stderr,"--treedepth=%d\n",treedepth);
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fprintf(stderr,"--ngroups=%d\n",ngroups);
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fprintf(stderr,"--ngroupattrs=%d\n",ngroupattrs);
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fprintf(stderr,"--ndims=%d\n",ndims);
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fprintf(stderr,"--ntypes=%d\n",ntypes);
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fprintf(stderr,"--nvars=%d\n",nvars);
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fprintf(stderr,"--varrank=%d\n",varrank);
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fprintf(stderr,"--nvarattrs=%d\n",nvarattrs);
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fflush(stderr);
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}
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/* Build a compound type with two fields */
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static void
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buildcmpdtype(int grpid, int typindex)
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{
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char name[NC_MAX_NAME+1];
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int typid;
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snprintf(name,NC_MAX_NAME,"cmpd%d",typindex);
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CHECK(nc_def_compound(grpid, 2*sizeof(int), name, &typid));
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CHECK(nc_insert_compound(grpid, typid, "f1", 0, NC_INT));
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CHECK(nc_insert_compound(grpid, typid, "f2", sizeof(int), NC_INT));
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}
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/* Build an enum type with two members */
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static void
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buildenumtype(int grpid, int typindex)
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{
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char name[NC_MAX_NAME+1];
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int typid;
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int val0 = 17;
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int val1 = 37;
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snprintf(name,NC_MAX_NAME,"enum%d",typindex);
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CHECK(nc_def_enum(grpid, NC_INT, name, &typid));
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CHECK(nc_insert_enum(grpid, typid, "m0", &val0));
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CHECK(nc_insert_enum(grpid, typid, "m1", &val1));
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}
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/* Build attributes for either group or var */
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static void
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buildatts(int grpid, int varid)
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{
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char name[NC_MAX_NAME+1];
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int i, count;
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count = (varid == NC_GLOBAL? ngroupattrs : nvarattrs);
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for(i=0;i<count;i++) {
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snprintf(name,NC_MAX_NAME,"a%d",i);
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CHECK(nc_put_att_int(grpid, varid, name, NC_INT, 1, &i));
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}
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}
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static void
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buildgroup(int parent, int grpindex, int depth)
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{
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char name[NC_MAX_NAME+1];
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int i, grpid, varid;
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int dimids[NDIMS];
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if(depth == 0) return;
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snprintf(name,NC_MAX_NAME,"g%d",grpindex);
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CHECK(nc_def_grp(parent, name, &grpid));
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/* Add dimensions and capture ids */
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for(i=0;i<ndims;i++) {
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snprintf(name,NC_MAX_NAME,"d%d",i);
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CHECK(nc_def_dim(grpid, name, i, &dimids[i]));
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}
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/* Add types: even index => compound, odd => enum */
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for(i=0;i<ntypes;i++) {
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if((i % 2) == 0)
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buildcmpdtype(grpid,i);
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else
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buildenumtype(grpid,i);
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}
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/* Add variables (plus their attributes */
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for(i=0;i<nvars;i++) {
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snprintf(name,NC_MAX_NAME,"v%d",i);
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CHECK(nc_def_var(grpid, name, NC_INT, VARRANK, dimids, &varid));
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/* Make variable be nofill */
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CHECK(nc_def_var_fill(grpid,varid,1,NULL));
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buildatts(grpid,varid);
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}
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/* Add group attributes */
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buildatts(grpid,NC_GLOBAL);
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/* Build subgroups */
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for(i=0;i<ngroups;i++) {
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buildgroup(grpid,i,depth-1);
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}
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}
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int
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main(int argc, char **argv)
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{
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int i, ncid;
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time_t starttime, endtime;
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long long delta;
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int tag;
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if(argc > 1) {
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while ((tag = getopt_long_only(argc, argv, "", options, NULL)) >= 0) {
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#ifdef DEBUG
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fprintf(stderr,"arg=%s value=%s\n",argv[optind-1],optarg);
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#endif
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switch (tag) {
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case OPT_TREEDEPTH:
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treedepth = atoi(optarg);
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break;
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case OPT_NGROUPS:
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ngroups = atoi(optarg);
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break;
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case OPT_NGROUPATTRS:
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ngroupattrs = atoi(optarg);
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break;
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case OPT_NDIMS:
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ndims = atoi(optarg);
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break;
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case OPT_NTYPES:
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ntypes = atoi(optarg);
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break;
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case OPT_NVARS:
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nvars = atoi(optarg);
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break;
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case OPT_VARRANK:
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varrank = atoi(optarg);
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break;
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case OPT_NVARATTRS:
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nvarattrs = atoi(optarg);
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break;
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case ':':
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fprintf(stderr,"missing argument\n");
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exit(1);
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case '?':
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default:
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fprintf(stderr,"unknown option\n");
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exit(1);
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}
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}
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}
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reportparameters();
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starttime = 0;
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endtime = 0;
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time(&starttime);
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CHECK(nc_create(FILE, NC_NETCDF4, &ncid));
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/* Build subgroups */
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for(i=0;i<NGROUPS;i++) {
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buildgroup(ncid,i,TREEDEPTH - 1);
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}
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CHECK(nc_close(ncid));
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time(&endtime);
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/* Compute the delta 1 second resolution is fine for this */
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delta = (long long)(endtime - starttime);
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printf("create delta=%lld\n",delta);
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return 0;
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return 0;
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}
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