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netcdf-c/nc_perf/tst_compress.c

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/*
Copyright 2021, UCAR/Unidata See COPYRIGHT file for copying and
redistribution conditions.
This program tests and benchmarks netcdf-4 I/O doing compression.
This is a sequential version of tst_compress_par.c.
Also see the file gfs_sample.cdl to see what is being produced by
this program.
Ed Hartnett, 11/27/21
*/
#include <config.h>
#include <nc_tests.h>
#include <time.h>
#include <sys/time.h> /* Extra high precision time info. */
#include "err_macros.h"
#include <H5public.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <netcdf.h>
#include <netcdf_meta.h>
#define TEST_NAME "tst_compress"
#define NUM_META_VARS 7
#define NUM_META_TRIES 2
#define NDIM2 2
#define NDIM4 4
#define NDIM5 5
#define NUM_PROC 4
#define NUM_SHUFFLE_SETTINGS 1
/* #define NUM_DEFLATE_LEVELS 3 */
#define NUM_DEFLATE_LEVELS 1
#define NUM_UNLIM_TRIES 1
#define NUM_NSD_SETTINGS 2
#define THOUSAND 1000
#define NUM_DATA_VARS 3
#define ERR_AWFUL 1
#define NUM_TRIES 2
#define USE_SMALL 1
#ifdef USE_SMALL
#define GRID_XT_LEN 8
#define GRID_YT_LEN 4
#define PFULL_LEN 4
#define PHALF_LEN 5
#else
#define GRID_XT_LEN 3072
#define GRID_YT_LEN 1536
#define PFULL_LEN 127
#define PHALF_LEN 128
#endif /* USE_SMALL */
#define TIME_LEN 1
#define MAX_COMPRESSION_FILTERS 4
char compression_filter_name[MAX_COMPRESSION_FILTERS][NC_MAX_NAME + 1];
int deflate_level[MAX_COMPRESSION_FILTERS][NUM_DEFLATE_LEVELS];
int nsd[NUM_NSD_SETTINGS] = {0, 4};
char dim_name[NDIM5][NC_MAX_NAME + 1] = {"grid_xt", "grid_yt", "pfull",
"phalf", "time"};
char var_name[NUM_META_VARS][NC_MAX_NAME + 1] = {"grid_xt", "lon", "grid_yt",
"lat", "pfull", "phalf", "time"};
int var_type[NUM_META_VARS] = {NC_DOUBLE, NC_DOUBLE, NC_DOUBLE, NC_DOUBLE,
NC_FLOAT, NC_FLOAT, NC_DOUBLE};
int dim_len[NDIM5] = {GRID_XT_LEN, GRID_YT_LEN, PFULL_LEN, PHALF_LEN,
TIME_LEN};
/* Prototype from tst_utils.c. */
int nc4_timeval_subtract(struct timeval *result, struct timeval *x,
struct timeval *y);
/* Get the size of a file in bytes. */
int
get_file_size(char *filename, size_t *file_size)
{
FILE *fp;
assert(filename && file_size);
fp = NCfopen(filename, "r");
if (fp)
{
fseek(fp, 0 , SEEK_END);
*file_size = ftell(fp);
fclose(fp);
}
return 0;
}
/* Check all the metadata, including coordinate variable data. */
int
check_meta(int ncid, int *data_varid, int s, int f, int deflate, int u,
size_t phalf_size, size_t phalf_start, float *phalf, size_t *data_start,
size_t *data_count, size_t pfull_start, size_t pfull_size, float *pfull,
size_t grid_xt_start, size_t grid_xt_size, double *grid_xt, size_t grid_yt_start,
size_t grid_yt_size, double *grid_yt, size_t *latlon_start,
size_t *latlon_count, double *lat, double *lon)
{
int ndims, nvars, natts, unlimdimid;
char name_in[NC_MAX_NAME + 1];
int xtype_in;
int ndims_in;
int dimids_in[NDIM4];
size_t len_in;
double *grid_xt_in, *grid_yt_in;
double *lat_in, *lon_in;
float *phalf_in, *pfull_in;
int d, v, i;
/* Check number of dims, vars, atts. */
if (nc_inq(ncid, &ndims, &nvars, &natts, &unlimdimid)) ERR;
if (ndims != NDIM5 || nvars != NUM_META_VARS + NUM_DATA_VARS ||
natts != 0) ERR;
if (unlimdimid != (u ? 4 : -1)) ERR;
/* Check the dimensions. */
for (d = 0; d < NDIM5; d++)
{
if (nc_inq_dim(ncid, d, name_in, &len_in)) ERR;
if (strcmp(name_in, dim_name[d]) || len_in != dim_len[d]) ERR;
}
/* Check metadata vars. */
for (v = 0; v < NUM_META_VARS; v++)
{
if (nc_inq_var(ncid, v, name_in, &xtype_in, &ndims_in, dimids_in,
&natts)) ERR;
if (strcmp(name_in, var_name[v]) || xtype_in != var_type[v]) ERR;
}
/* Check the values for grid_xt. */
if (!(grid_xt_in = malloc(grid_xt_size * sizeof(double)))) ERR;
if (nc_get_vara_double(ncid, 0, &grid_xt_start, &grid_xt_size, grid_xt_in)) ERR;
for (i = 0; i < grid_xt_size; i++)
if (grid_xt_in[i] != grid_xt[i]) ERR;
free(grid_xt_in);
/* Check the values for lon. */
if (!(lon_in = malloc(latlon_count[0] * latlon_count[1] * sizeof(double)))) ERR;
if (nc_get_vara_double(ncid, 1, latlon_start, latlon_count, lon_in)) ERR;
for (i = 0; i < latlon_count[0] * latlon_count[1]; i++)
if (lon_in[i] != lon[i]) ERR;
free(lon_in);
/* Check the values for grid_yt. */
if (!(grid_yt_in = malloc(grid_yt_size * sizeof(double)))) ERR;
if (nc_get_vara_double(ncid, 2, &grid_yt_start, &grid_yt_size, grid_yt_in)) ERR;
for (i = 0; i < grid_yt_size; i++)
if (grid_yt_in[i] != grid_yt[i]) ERR;
free(grid_yt_in);
/* Check the values for lat. */
if (!(lat_in = malloc(latlon_count[0] * latlon_count[1] * sizeof(double)))) ERR;
if (nc_get_vara_double(ncid, 1, latlon_start, latlon_count, lat_in)) ERR;
for (i = 0; i < latlon_count[0] * latlon_count[1]; i++)
if (lat_in[i] != lat[i]) ERR;
free(lat_in);
/* Check the values for pfull. */
if (!(pfull_in = malloc(pfull_size * sizeof(float)))) ERR;
if (nc_get_vara_float(ncid, 4, &pfull_start, &pfull_size, pfull_in)) ERR;
for (i = 0; i < pfull_size; i++)
if (pfull_in[i] != pfull[i]) ERR;
free(pfull_in);
/* Check the values for phalf. */
if (!(phalf_in = malloc(phalf_size * sizeof(float)))) ERR;
if (nc_get_vara_float(ncid, 5, &phalf_start, &phalf_size, phalf_in)) ERR;
for (i = 0; i < phalf_size; i++)
if (phalf_in[i] != phalf[i]) ERR;
free(phalf_in);
return 0;
}
/* Write all the metadata, including coordinate variable data. */
int
write_meta(int ncid, int *data_varid, int s, int f, int nsd, int deflate, int u,
size_t phalf_size, size_t phalf_start, float *phalf, size_t *data_start,
size_t *data_count, size_t pfull_start, size_t pfull_size, float *pfull,
size_t grid_xt_start, size_t grid_xt_size, double *grid_xt, size_t grid_yt_start,
size_t grid_yt_size, double *grid_yt, size_t *latlon_start,
size_t *latlon_count, double *lat, double *lon)
{
int dimid[NDIM5];
int dimid_data[NDIM4];
int varid[NUM_META_VARS];
double value_time = 2.0;
int dv;
/* Turn off fill mode. */
if (nc_set_fill(ncid, NC_NOFILL, NULL)) ERR;
/* Define dimension grid_xt. */
if (nc_def_dim(ncid, dim_name[0], dim_len[0], &dimid[0])) ERR;
/* Define dimension grid_yt. */
if (nc_def_dim(ncid, dim_name[1], dim_len[1], &dimid[1])) ERR;
/* Define variable grid_xt. */
if (nc_def_var(ncid, var_name[0], var_type[0], 1, &dimid[0], &varid[0])) ERR;
/* Define variable lon. */
if (nc_def_var(ncid, var_name[1], var_type[1], 2, dimid, &varid[1])) ERR;
if (nc_put_att_text(ncid, varid[1], "long_name", strlen("T-cell longitude"), "T-cell longitude")) ERR;
if (nc_put_att_text(ncid, varid[1], "units", strlen("degrees_E"), "degrees_E")) ERR;
if (nc_put_att_text(ncid, varid[0], "cartesian_axis", strlen("X"), "X")) ERR;
/* Define variable grid_yt. */
if (nc_def_var(ncid, var_name[2], var_type[2], 1, &dimid[1], &varid[2])) ERR;
/* Define variable lat. */
if (nc_def_var(ncid, var_name[3], var_type[3], 2, dimid, &varid[3])) ERR;
if (nc_put_att_text(ncid, varid[3], "long_name", strlen("T-cell latitude"), "T-cell latitude")) ERR;
if (nc_put_att_text(ncid, varid[3], "units", strlen("degrees_N"), "degrees_N")) ERR;
if (nc_put_att_text(ncid, varid[2], "cartesian_axis", strlen("Y"), "Y")) ERR;
/* Define dimension pfull. */
if (nc_def_dim(ncid, dim_name[2], dim_len[2], &dimid[2])) ERR;
/* Define variable pfull and write data. */
if (nc_def_var(ncid, var_name[4], var_type[4], 1, &dimid[2], &varid[4])) ERR;
if (nc_enddef(ncid)) ERR;
if (nc_put_vara_float(ncid, varid[4], &pfull_start, &pfull_size, pfull)) ERR;
if (nc_redef(ncid)) ERR;
/* Define dimension phalf. This dim is only used by the phalf coord var. */
if (nc_def_dim(ncid, dim_name[3], dim_len[3], &dimid[3])) ERR;
/* Define coord variable phalf and write data. */
if (nc_def_var(ncid, var_name[5], var_type[5], 1, &dimid[3], &varid[5])) ERR;
if (nc_enddef(ncid)) ERR;
if (nc_put_vara_float(ncid, varid[5], &phalf_start, &phalf_size, phalf)) ERR;
if (nc_redef(ncid)) ERR;
/* Define dimension time, sometimes the unlimited dimension,
* sometimes a fixed dim of 1. */
if (nc_def_dim(ncid, dim_name[4], (u ? NC_UNLIMITED : 1), &dimid[4])) ERR;
/* Define variable time and write data. */
if (nc_def_var(ncid, var_name[6], var_type[6], 1, &dimid[4], &varid[6])) ERR;
if (nc_enddef(ncid)) ERR;
/* In NOAA code, do all processors write the single time value? */
if (nc_put_var_double(ncid, varid[6], &value_time)) ERR;;
if (nc_redef(ncid)) ERR;
/* Write variable grid_xt data. */
if (nc_enddef(ncid)) ERR;
if (nc_put_vara_double(ncid, varid[0], &grid_xt_start, &grid_xt_size, grid_xt)) ERR;
if (nc_redef(ncid)) ERR;
/* Write lon data. */
if (nc_enddef(ncid)) ERR;
if (nc_put_vara_double(ncid, varid[1], latlon_start, latlon_count, lon)) ERR;
if (nc_redef(ncid)) ERR;
/* Write grid_yt data. */
if (nc_enddef(ncid)) ERR;
if (nc_put_vara_double(ncid, varid[2], &grid_yt_start, &grid_yt_size, grid_yt)) ERR;
if (nc_redef(ncid)) ERR;
/* Write lat data. */
if (nc_enddef(ncid)) ERR;
if (nc_put_vara_double(ncid, varid[3], latlon_start, latlon_count, lat)) ERR;
/* Specify dimensions for our data vars. */
dimid_data[0] = dimid[4];
dimid_data[1] = dimid[2];
dimid_data[2] = dimid[1];
dimid_data[3] = dimid[0];
/* Define data variables. */
for (dv = 0; dv < NUM_DATA_VARS; dv++)
{
char data_var_name[NC_MAX_NAME + 1];
sprintf(data_var_name, "var_%d", dv);
if (nc_redef(ncid)) ERR;
if (nc_def_var(ncid, data_var_name, NC_FLOAT, NDIM4, dimid_data, &data_varid[dv])) ERR;
if (nsd)
if (nc_def_var_quantize(ncid, data_varid[dv], NC_QUANTIZE_BITGROOM, nsd)) ERR;
/* Setting any filter only will work for HDF5-1.10.3 and later */
/* versions. Do nothing for "none". */
if (!strcmp(compression_filter_name[f], "zlib"))
if (nc_def_var_deflate(ncid, data_varid[dv], s, 1, deflate)) ERR;
#if NC_HAS_SZIP_WRITE
if (!strcmp(compression_filter_name[f], "szip"))
if (nc_def_var_szip(ncid, data_varid[dv], 32, 32)) ERR;
#endif /* NC_HAS_SZIP_WRITE */
if (nc_enddef(ncid)) ERR;
}
if (nc_redef(ncid)) ERR;
if (nc_put_att_text(ncid, varid[0], "long_name", strlen("T-cell longitude"), "T-cell longitude")) ERR;
if (nc_put_att_text(ncid, varid[0], "units", strlen("degrees_E"), "degrees_E")) ERR;
if (nc_put_att_text(ncid, varid[2], "long_name", strlen("T-cell latiitude"), "T-cell latiitude")) ERR;
if (nc_put_att_text(ncid, varid[2], "units", strlen("degrees_N"), "degrees_N")) ERR;
if (nc_enddef(ncid)) ERR;
if (nc_redef(ncid)) ERR;
for (dv = 0; dv < NUM_DATA_VARS; dv++)
{
float compress_err = 42.22;
int nbits = 5;
if (nc_put_att_float(ncid, data_varid[dv], "max_abs_compression_error", NC_FLOAT, 1, &compress_err)) ERR;
if (nc_put_att_int(ncid, data_varid[dv], "nbits", NC_INT, 1, &nbits)) ERR;
}
if (nc_enddef(ncid)) ERR;
return 0;
}
/* Calculate the decomposition of the 2D lat/lon coordinate
* variables. */
int
decomp_latlon(int *dim_len, size_t *latlon_start,
size_t *latlon_count, double **lat, double **lon)
{
int i, j;
assert(dim_len && latlon_start && latlon_count && lat && lon && !*lat &&
!*lon);
/* Size of local arrays (i.e. for this pe) lon and lat data. */
latlon_start[0] = 0;
latlon_start[1] = 0;
latlon_count[0] = dim_len[0];
latlon_count[1] = dim_len[1];
/* Allocate storage. */
if (!(*lon = malloc(latlon_count[0] * latlon_count[1] * sizeof(double)))) ERR;
if (!(*lat = malloc(latlon_count[0] * latlon_count[1] * sizeof(double)))) ERR;
/* Now calculate some latlon values to write. */
for (i = 0; i < latlon_count[0]; i++)
{
for (j = 0; j < latlon_count[1]; j++)
{
(*lon)[j * latlon_count[0] + i] = 100 + i + j;
(*lat)[j * latlon_count[0] + i] = 100 + i + j;
}
}
return 0;
}
/* Based on the MPI rank and number of tasks, calculate the
* decomposition of the 4D data. */
int
decomp_4D(int *dim_len, size_t *start, size_t *count)
{
/* Time dimension. */
start[0] = 0;
count[0] = 1;
/* Vertical dimension (pfull). */
count[1] = dim_len[2];
start[1] = 0;
start[2] = 0;
start[3] = 0;
count[2] = dim_len[1];
count[3] = dim_len[0];
return 0;
}
/* Decompose the grid_xt and grid_yt coordinate vars, and also come up
* with some data. */
int
decomp_grid(int *dim_len, size_t *grid_xt_start, size_t *grid_xt_size,
size_t *grid_yt_start, size_t *grid_yt_size, double **grid_xt, double **grid_yt)
{
int i;
/* Size of local (i.e. for this pe) grid_xt data. */
*grid_xt_size = dim_len[0];
*grid_xt_start = 0;
/* Size of local (i.e. for this pe) grid_yt data. */
*grid_yt_size = dim_len[1];
*grid_yt_start = 0;
/* Allocate storage for the grid_xy and grid_yt coordinate
* variable data. */
if (!(*grid_xt = malloc(*grid_xt_size * sizeof(double)))) ERR;
if (!(*grid_yt = malloc(*grid_yt_size * sizeof(double)))) ERR;
/* Fill the grid_xt and grid_yt coordinate data arrays. */
for (i = 0; i < *grid_xt_size; i++)
(*grid_xt)[i] = 100 + i;
for (i = 0; i < *grid_yt_size; i++)
(*grid_yt)[i] = 100 + i;
return 0;
}
/* Decompose the pfull and phalf coordinate vars. */
int
decomp_p(size_t *data_count, int *dim_len,
size_t *phalf_start, size_t *phalf_size, float **phalf,
size_t *pfull_start, size_t *pfull_size, float **pfull)
{
int i;
/* Size of local (i.e. for this pe) phalf data. */
*phalf_size = dim_len[3];
*phalf_start = 0;
*pfull_size = dim_len[2];
*pfull_start = 0;
/* Allocate space on this pe to hold the coordinate var data for this pe. */
if (!(*pfull = malloc(data_count[1] * sizeof(float)))) ERR;
if (!(*phalf = malloc(*phalf_size * sizeof(float)))) ERR;
/* Some fake data for this pe to write. */
for (i = 0; i < data_count[1]; i++)
(*pfull)[i] = 100 + i;
for (i = 0; i < *phalf_size; i++)
(*phalf)[i] = 100 + i;
return 0;
}
/* Determine what compression filters are present. */
int
find_filters(int *num_compression_filters, char compression_filter_name[][NC_MAX_NAME + 1],
int deflate_level[][NUM_DEFLATE_LEVELS])
{
int nfilters = 0;
int i;
/* Try with no compression. */
strcpy(compression_filter_name[nfilters], "none");
nfilters++;
/* zlib is always present. */
strcpy(compression_filter_name[nfilters], "zlib");
for (i = 0; i < NUM_DEFLATE_LEVELS; i++)
deflate_level[nfilters][i] = i + 1;
/* deflate_level[nfilters][0] = 1; */
/* deflate_level[nfilters][1] = 4; */
/* deflate_level[nfilters][2] = 9; */
nfilters++;
/* szip is optionally present. */
#if NC_HAS_SZIP_WRITE
strcpy(compression_filter_name[nfilters], "szip");
nfilters++;
#endif /* NC_HAS_SZIP_WRITE */
*num_compression_filters = nfilters;
return 0;
}
int
main(int argc, char **argv)
{
/* For timing. */
struct timeval start_time, end_time, diff_time;
int write_1_us;
int ncid;
size_t latlon_start[NDIM2], latlon_count[NDIM2];
size_t data_start[NDIM4], data_count[NDIM4];
/* Variables. */
int data_varid[NUM_DATA_VARS];
size_t pfull_size, pfull_start;
float *pfull = NULL;
size_t phalf_size, phalf_start;
float *phalf = NULL;
size_t grid_xt_size, grid_xt_start;
double *grid_xt = NULL;
size_t grid_yt_size, grid_yt_start;
double *grid_yt = NULL;
double *lon = NULL;
double *lat = NULL;
float *value_data;
/* Compression filter info. */
int num_compression_filters;
int f, s, n, try;
int i, j, k, dv, dl;
int ret;
/* Determine what compression filters are present. */
if ((ret = find_filters(&num_compression_filters, compression_filter_name, deflate_level)))
return ret;
/* Determine 4D data decomposition to write data vars. */
if (decomp_4D(dim_len, data_start, data_count)) ERR;
/* Determine 2D data decomposition to write lat/lon coordinate vars. */
if (decomp_latlon(dim_len, latlon_start, latlon_count, &lat, &lon)) ERR;
/* Decompose grid_xt and grid_yt coordiate vars. */
if (decomp_grid(dim_len, &grid_xt_start, &grid_xt_size,
&grid_yt_start, &grid_yt_size, &grid_xt, &grid_yt)) ERR;
/* Decompose phalf and pfull. */
if (decomp_p(data_count, dim_len, &phalf_start,
&phalf_size, &phalf, &pfull_start, &pfull_size, &pfull)) ERR;
/* printf("%d: data_count[3] %ld data_count[2] %ld data_count[1] %ld\n", my_rank, */
/* data_count[3], data_count[2], data_count[1]); */
/* Allocate space to hold the data. */
if (!(value_data = malloc(data_count[3] * data_count[2] * data_count[1] *
sizeof(float)))) ERR;
/* Create some data. */
size_t cnt = 0;
for (k = 0; k < data_count[1]; k++)
{
for (j = 0; j < data_count[2]; j++)
{
for(i = 0; i < data_count[3]; i++)
{
/* value_data[cnt] = (-1 * i%2) * my_rank * 1000 + cnt / sqrt(my_rank + cnt + 1) - (-1 * i%3 * i); */
value_data[cnt] = (-1 * i%2) + cnt / sqrt(cnt + 1) - (-1 * i%2 * i);
/* printf("%d: value_data[%ld] %g\n", my_rank, cnt, value_data[cnt]); */
cnt++;
}
}
}
printf("Benchmarking creation of file similar to one produced by the UFS.\n");
printf("comp, level, nsd, shuffle, data wr rate (MB/s), file size (MB)\n");
/* for (f = 0; f < num_compression_filters; f++) */
for (try = 0; try < NUM_TRIES; try++)
{
printf("try %d:\n", try);
for (f = 0; f < 2; f++)
{
/* for (s = 0; s < NUM_SHUFFLE_SETTINGS; s++) */
for (s = 0; s < 1; s++)
{
/* for (n = 0; n < NUM_NSD_SETTINGS; n++) */
for (n = 0; n < 1; n++)
{
for (dl = 0; dl < NUM_DEFLATE_LEVELS; dl++)
{
size_t file_size;
char file_name[NC_MAX_NAME * 3 + 1];
/* No deflate levels for szip or none. */
if (!strcmp(compression_filter_name[f], "szip") && dl) continue;
if (!strcmp(compression_filter_name[f], "none") && dl) continue;
/* Use the same filename every time, so we don't
* create many large files, just one. ;-) */
sprintf(file_name, "%s.nc", TEST_NAME);
/* Remove the last file. Ignore errors. */
remove(file_name);
/* nc_set_log_level(3); */
/* Create a netcdf-4 file. */
if (nc_create(file_name, NC_NETCDF4, &ncid)) ERR;
if (write_meta(ncid, data_varid, s, f, nsd[n], deflate_level[f][dl], 0,
phalf_size, phalf_start, phalf,
data_start, data_count, pfull_start, pfull_size, pfull, grid_xt_start,
grid_xt_size, grid_xt, grid_yt_start,
grid_yt_size, grid_yt, latlon_start,
latlon_count, lat, lon)) ERR;
if (gettimeofday(&start_time, NULL)) ERR;
/* Write one record each of the data variables. */
for (dv = 0; dv < NUM_DATA_VARS; dv++)
{
/* printf("%d: data_start %ld %ld %ld %ld data_count %ld %ld %ld %ld\n", my_rank, data_start[0], data_start[1], */
/* data_start[2], data_start[3], data_count[0], data_count[1], data_count[2], data_count[3]); */
if (nc_put_vara_float(ncid, data_varid[dv], data_start, data_count,
value_data)) ERR;
if (nc_redef(ncid)) ERR;
}
/* Close the file. */
if (nc_close(ncid)) ERR;
/* Stop the data timer. */
if (gettimeofday(&end_time, NULL)) ERR;
if (nc4_timeval_subtract(&diff_time, &end_time, &start_time)) ERR;
write_1_us = (int)diff_time.tv_sec * MILLION + (int)diff_time.tv_usec;
/* printf("write_1_us %d\n", write_1_us); */
/* Get the file size. */
if (get_file_size(file_name, &file_size)) ERR;
/* Check the file metadata for correctness. */
if (nc_open(file_name, NC_NOWRITE, &ncid)) ERR;
if (check_meta(ncid, data_varid, s, f, deflate_level[f][dl], 0,
phalf_size, phalf_start, phalf,
data_start, data_count, pfull_start, pfull_size,
pfull, grid_xt_start, grid_xt_size, grid_xt,
grid_yt_start, grid_yt_size, grid_yt, latlon_start,
latlon_count, lat, lon)) ERR;
if (nc_close(ncid)) ERR;
/* Print out results. */
{
float data_size, data_rate;
data_size = (NUM_DATA_VARS * dim_len[0] * dim_len[1] * dim_len[2] *
dim_len[4] * sizeof(float))/MILLION;
/* printf("data_size %f write_1_us / MILLION %g\n", data_size, (float)write_1_us/MILLION); */
data_rate = (float)data_size / ((float)write_1_us / MILLION);
printf("%s, %d, %d, %d, %g, %g\n", compression_filter_name[f],
deflate_level[f][dl], nsd[n], s,
data_rate, (float)file_size/MILLION);
}
} /* next deflate level */
} /* next nsd */
} /* next shuffle filter test */
} /* next compression filter (zlib and szip) */
} /* next try */
/* Free resources. */
if (grid_xt)
free(grid_xt);
if (grid_yt)
free(grid_yt);
if (pfull)
free(pfull);
if (phalf)
free(phalf);
if (lon)
free(lon);
if (lat)
free(lat);
free(value_data);
SUMMARIZE_ERR;
FINAL_RESULTS;
return 0;
}
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