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90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/** \file
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Performance test from KNMI.
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Copyright 2009, UCAR/Unidata. See \ref copyright file for copying and
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redistribution conditions.
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*/
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#include <nc_tests.h>
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#include <time.h>
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#include <sys/time.h>
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#include <unistd.h>
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#define FILE_NAME_1 "MSGCPP_CWP_NC3.nc"
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#define FILE_NAME_2 "MSGCPP_CWP_NC4.nc"
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#define NDIMS3 3
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#define DATA_VAR_NAME "pr"
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#define NUM_CACHE_TRIES 1
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#define LON_DIMID 0
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#define LAT_DIMID 1
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#define BNDS_DIMID 2
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#define TIME_DIMID 3
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#define LON_LEN 256
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#define LAT_LEN 128
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#define BNDS_LEN 2
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#define TIME_LEN 1560
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#define NUM_TS 1
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static int
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read_file(char *filename)
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{
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#define CWP "cwp"
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#define XLEN 3712
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#define YLEN 3712
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int ncid, varid;
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struct timeval start_time, end_time, diff_time;
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short *data;
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int time_us;
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printf("**** reading file %s\n", filename);
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if (gettimeofday(&start_time, NULL)) ERR_RET;
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if (nc_open(filename, NC_NOWRITE, &ncid)) ERR_RET;
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if (gettimeofday(&end_time, NULL)) ERR_RET;
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if (nc4_timeval_subtract(&diff_time, &end_time, &start_time)) ERR_RET;
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time_us = (int)diff_time.tv_sec * MILLION + (int)diff_time.tv_usec;
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printf("File open time (us): %d\n", (int)time_us);
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if (!(data = malloc(sizeof(short) * XLEN * YLEN))) ERR;
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if (gettimeofday(&start_time, NULL)) ERR_RET;
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if (nc_inq_varid(ncid, CWP, &varid)) ERR;
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if (nc_get_var_short(ncid, varid, data)) ERR;
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if (gettimeofday(&end_time, NULL)) ERR_RET;
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if (nc4_timeval_subtract(&diff_time, &end_time, &start_time)) ERR_RET;
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time_us = (int)diff_time.tv_sec * MILLION + (int)diff_time.tv_usec;
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printf("Data read time (us): %d\n", (int)time_us);
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free(data);
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if (nc_close(ncid))
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ERR_RET;
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return 0;
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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 c, header = 0, verbose = 0, timeseries = 0;
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int ncid, varid, storage;
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char name_in[NC_MAX_NAME + 1];
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size_t len;
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size_t cs[NDIMS3] = {0, 0, 0};
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int cache = MEGABYTE;
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int ndims, dimid[NDIMS3];
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float hor_data[LAT_LEN * LON_LEN];
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int read_1_us, avg_read_us;
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float ts_data[TIME_LEN];
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size_t start[NDIMS3], count[NDIMS3];
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int deflate, shuffle, deflate_level;
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struct timeval start_time, end_time, diff_time;
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printf("\n*** Testing netcdf-4 vs. netcdf-3 performance.\n");
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if (read_file(FILE_NAME_1)) ERR;
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if (read_file(FILE_NAME_2)) ERR;
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SUMMARIZE_ERR;
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FINAL_RESULTS;
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}
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