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264 lines
7.1 KiB
C
264 lines
7.1 KiB
C
/* This is part of the netCDF package. Copyright 2018 University
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* Corporation for Atmospheric Research/Unidata. See COPYRIGHT file
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* for conditions of use.
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*
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* Test the netCDF-4 attribute code.
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*
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* WARNING: do not attempt to run this under windows because of the use
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* of gettimeofday().
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*
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* Ed Hartnett 6/19/18
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*/
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#include <config.h>
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#include <nc_tests.h>
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#include "err_macros.h"
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#include "nc4internal.h"
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#include <sys/time.h>
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#include <hdf5.h>
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#define TEST "tst_attsperf"
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#define VAR "bigvar"
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#define NDIMS 2
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#define DIM0 "d0"
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#define DIM1 "d1"
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#define DIMSIZE0 16
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#define DIMSIZE1 512
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#define TOTALSIZE (DIMSIZE0 * DIMSIZE1)
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#define NUM_ATTS 100
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#define ATT_LEN 100
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#define NUM_VARS 1
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#define NUM_VARS_MANY 5000
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int
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add_attributes(int ncid, int varid, size_t num_atts, size_t att_len)
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{
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char att_name[NC_MAX_NAME + 1];
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double *att_data;
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int i, a;
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/* Allocate space for attribute data. */
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if (!(att_data = malloc(att_len * sizeof(double))))
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return NC_ENOMEM;
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/* Fill up data. */
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for (i = 0; i < ATT_LEN; i++)
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att_data[i] = i;
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/* Write a bunch of attributes. */
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for (a = 0; a < num_atts; a++)
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{
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snprintf(att_name, sizeof(att_name), "%s_varid_%d_att_%d", TEST, varid, a);
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if (nc_put_att_double(ncid, varid, att_name, NC_DOUBLE,
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att_len, att_data)) ERR;
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}
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free(att_data);
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return 0;
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}
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/* Build the test file. */
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int
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buildfile(size_t num_vars, size_t num_atts, size_t att_len, char *file_name)
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{
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int ncid, varid;
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int dimids[NDIMS];
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int v;
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if (nc_create(file_name, NC_NETCDF4, &ncid)) ERR;
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if (nc_def_dim(ncid, DIM0, DIMSIZE0, &dimids[0])) ERR;
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if (nc_def_dim(ncid, DIM1, DIMSIZE1, &dimids[1])) ERR;
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for (v = 0; v < num_vars; v++)
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{
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char var_name[NC_MAX_NAME + 1];
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snprintf(var_name, sizeof(var_name), "%s_var_%d", TEST, v);
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if (nc_def_var(ncid, var_name, NC_INT, NDIMS, dimids, &varid)) ERR;
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if (add_attributes(ncid, v, num_atts, att_len)) ERR;
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}
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if (!num_vars)
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if (add_attributes(ncid, NC_GLOBAL, num_atts, att_len)) ERR;
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if (nc_enddef(ncid)) ERR;
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if (nc_close(ncid)) ERR;
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return 0;
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}
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/* Open/close the file with netCDF. */
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int
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readfile(char *file_name, long long *delta, int do_inq, int num_vars)
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{
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int ncid;
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struct timeval starttime, endtime;
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long long startt, endt;
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int natts;
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int v;
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/* Start the clock. */
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gettimeofday(&starttime, NULL);
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/* Open the file. */
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if (nc_open(file_name, NC_NETCDF4, &ncid)) ERR;
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/* Do an inq if desired, triggering read of atts. */
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if (do_inq)
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{
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for (v = 0; v < num_vars; v++)
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if (nc_inq_varnatts(ncid, v, &natts)) ERR;
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if (nc_inq_natts(ncid, &natts)) ERR;
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}
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/* Close the file. */
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if (nc_close(ncid)) ERR;
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gettimeofday(&endtime, NULL);
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/* Compute the time delta */
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startt = (1000000 * starttime.tv_sec) + starttime.tv_usec;
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endt = (1000000 * endtime.tv_sec) + endtime.tv_usec;
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*delta = endt - startt;
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return 0;
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}
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/* Open/close the file with HDF5. */
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int
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readfile_hdf5(char *file_name, long long *delta, int do_inq, int num_vars)
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{
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hid_t hdfid, hdf_grpid;
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hid_t fapl_id;
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struct timeval starttime, endtime;
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long long startt, endt;
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/* Start the clock. */
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gettimeofday(&starttime, NULL);
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/* Open and close the root group. */
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if ((fapl_id = H5Pcreate(H5P_FILE_ACCESS)) < 0) ERR;
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if (H5Pset_fclose_degree(fapl_id, H5F_CLOSE_WEAK)) ERR;
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if ((hdfid = H5Fopen(file_name, H5F_ACC_RDONLY, fapl_id)) < 0) ERR;
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if ((hdf_grpid = H5Gopen2(hdfid, "/", H5P_DEFAULT)) < 0) ERR;
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/* Do we want to do an inq? */
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if (do_inq)
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{
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if (num_vars)
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{
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}
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else /* global atts */
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{
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hsize_t num_obj;
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/* Find out how many attributes. */
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if ((num_obj = H5Aget_num_attrs(hdf_grpid)) < 0) ERR;
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}
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}
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if (H5Gclose(hdf_grpid) < 0) ERR;
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if (H5Fclose(hdfid) < 0) ERR;
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gettimeofday(&endtime, NULL);
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/* Compute the time delta */
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startt = (1000000 * starttime.tv_sec) + starttime.tv_usec;
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endt = (1000000 * endtime.tv_sec) + endtime.tv_usec;
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*delta = endt - startt;
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return 0;
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}
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#define NUM_RUNS 1
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#define NUM_STEPS 10
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#define FACTOR 100
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#define VAR_FACTOR 500
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#define NUM_INQ_TESTS 2
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int
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main(int argc, char **argv)
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{
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size_t num_atts = 1;
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char file_name[NC_MAX_NAME + 1];
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float tot_nc4, tot_hdf5;
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int factor;
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int r, s, num_vars, do_inq;
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printf("Testing with many vars...\n");
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{
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for (do_inq = 0; do_inq < 1; do_inq++)
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{
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printf("Number of Variables\tHDF5 Open Time (s)\tNetcdf4 Open Time (s)\n");
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for (num_vars = 1; num_vars <= NUM_VARS_MANY; num_vars += VAR_FACTOR)
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{
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num_atts = 10;
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tot_nc4 = 0;
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tot_hdf5 = 0;
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for (r = 0; r < NUM_RUNS; r++)
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{
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long long nc4_open_time = 0;
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long long hdf5_open_time = 0;
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/* Determine file name. */
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snprintf(file_name, sizeof(file_name), "%s_%d_%d.nc", TEST, num_vars, r);
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if (buildfile(num_vars, num_atts, ATT_LEN, file_name)) ERR;
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if (readfile(file_name, &nc4_open_time, do_inq, num_vars)) ERR;
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if (readfile_hdf5(file_name, &hdf5_open_time, do_inq, num_vars)) ERR;
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tot_nc4 += nc4_open_time;
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tot_hdf5 += hdf5_open_time;
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}
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/* Print average results to the millisec */
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printf("%d\t%g\t%g\n", num_vars, tot_hdf5/((float)NUM_RUNS * 1000000),
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tot_nc4/((float)NUM_RUNS * 1000000));
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}
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} /* next do_inq */
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}
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SUMMARIZE_ERR;
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printf("Testing with many atts...\n");
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{
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for (do_inq = 0; do_inq < NUM_INQ_TESTS; do_inq++)
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{
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for (num_vars = 0; num_vars <= NUM_VARS; num_vars++)
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{
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/* Reset. */
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num_atts = 1;
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factor = FACTOR;
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printf("*** %s %s\n", num_vars ? "variable attributes" : "global attributes",
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do_inq ? "with inq" : "");
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printf("Number of Attributes\tHDF5 Open Time (s)\tNetcdf4 Open Time (s)\n");
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for (s = 0; s < NUM_STEPS; s++)
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{
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tot_nc4 = 0;
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tot_hdf5 = 0;
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num_atts += factor * s;
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for (r = 0; r < NUM_RUNS; r++)
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{
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long long nc4_open_time;
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long long hdf5_open_time;
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/* Determine file name. */
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snprintf(file_name, sizeof(file_name), "%s_%d_%d_%d.nc", TEST, num_vars, s, r);
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if (buildfile(num_vars, num_atts, ATT_LEN, file_name)) ERR;
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if (readfile(file_name, &nc4_open_time, do_inq, num_vars)) ERR;
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if (readfile_hdf5(file_name, &hdf5_open_time, do_inq, num_vars)) ERR;
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tot_nc4 += nc4_open_time;
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tot_hdf5 += hdf5_open_time;
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}
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/* Print average results to the millisec */
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printf("%ld\t%g\t%g\n", num_atts, tot_hdf5/((float)NUM_RUNS * 1000000),
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tot_nc4/((float)NUM_RUNS * 1000000));
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}
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}
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} /* next do_inq */
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}
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SUMMARIZE_ERR;
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FINAL_RESULTS;
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}
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