Exodus 7.10

/test/test_ts_partial_nvar_rd.c
/*
* Copyright(c) 2005-2017 National Technology &Engineering Solutions
* of Sandia, LLC(NTESS).Under the terms of Contract DE - NA0003525 with
* NTESS, the U.S.Government retains certain rights in this software.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and / or other materials provided
* with the distribution.
*
* * Neither the name of NTESS nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED.IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <exodusII.h>
#include <limits.h>
#include <math.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/*
* Create an exodus file with NUM_NODES nodes and 0 elements.
* Initial mesh is created on main thread.
* There are
* Nodal var data and names is written on multiple threads
* -- Each thread handles a portion of the nodes for each nodal variable
* -- Each thread handles a portion of the nodes for each coordinate variable
*/
#define NUM_THREADS 8
#define NUM_NODES 64 /* should be multiple of NUM_THREADS */
#define NUM_NODAL_VAR 4
static int ulpsDistance(float a, float b)
{
int ia, ib;
if (a == b)
return 0;
memcpy(&ia, &a, sizeof(a));
memcpy(&ib, &b, sizeof(b));
if ((ia < 0) != (ib < 0))
return INT_MAX;
int distance = ia - ib;
if (distance < 0)
distance = -distance;
fprintf(stderr, "%f %f %d\n", a, b, distance);
return distance;
}
static int approx_equal(float f1, float f2) { return ulpsDistance(f1, f2) <= 2; }
typedef struct
{
long threadid;
int exoid;
int timestep;
} param;
void *input_nodal_var(void *varg)
{
param *arg = (param *)varg;
int num_node = ex_inquire_int(arg->exoid, EX_INQ_NODES);
int segment = num_node / NUM_THREADS;
int begin = arg->threadid * segment;
float *data = malloc(segment * sizeof(float));
int i, var;
if (arg->timestep == 1) {
ex_get_partial_coord(arg->exoid, begin + 1, segment, data, NULL, NULL);
for (i = 0; i < segment; i++) {
if (!approx_equal(data[i], (float)(begin + i) / 100.0)) {
fprintf(stderr,
"ERROR: Thread %ld: X Coordinate mismatch at node %d: Got: %f, expected %f\n",
arg->threadid, i + 1, data[i], (float)(begin + i) / 100.0);
}
}
ex_get_partial_coord(arg->exoid, begin + 1, segment, NULL, data, NULL);
for (i = 0; i < segment; i++) {
if (!approx_equal(data[i], (float)(begin + i) / 100.0)) {
fprintf(stderr,
"ERROR: Thread %ld: Y Coordinate mismatch at node %d: Got: %f, expected %f\n",
arg->threadid, i + 1, data[i], (float)(begin + i) / 100.0);
}
}
ex_get_partial_coord(arg->exoid, begin + 1, segment, NULL, NULL, data);
for (i = 0; i < segment; i++) {
if (!approx_equal(data[i], (float)(begin + i) / 100.0)) {
fprintf(stderr,
"ERROR: Thread %ld: Z Coordinate mismatch at node %d: Got: %f, expected %f\n",
arg->threadid, i + 1, data[i], (float)(begin + i) / 100.0);
}
}
}
if (arg->threadid < NUM_NODAL_VAR) {
char db_name[33];
char ex_name[33];
sprintf(ex_name, "NodalVar%ld", arg->threadid + 1);
ex_get_variable_name(arg->exoid, EX_NODAL, arg->threadid + 1, db_name);
if (strcmp(db_name, ex_name) != 0) {
fprintf(stderr,
"ERROR: Thread %ld: Incorrect variable name for variable %ld: Got: %s, expected %s\n",
arg->threadid, arg->threadid + 1, db_name, ex_name);
}
}
for (var = 1; var <= NUM_NODAL_VAR; var++) {
ex_get_partial_var(arg->exoid, arg->timestep, EX_NODAL, var, 1, begin + 1, segment, data);
for (i = 0; i < segment; i++) {
if (!approx_equal(data[i], (arg->timestep - 1) * 10 + var + (float)(begin + i) / 100.0)) {
fprintf(stderr,
"ERROR: Thread %ld: Nodal variable data mismatch in variable %d at node %d: "
"Got: %f, expected %f\n",
arg->threadid, var, i + 1, data[i],
(arg->timestep - 1) * 10 + var + (float)(begin + i) / 100.0);
}
}
}
free(data);
return NULL;
}
int init_file(int num_nodal_vars)
{
int exoid;
float version;
int CPU_word_size = 0; /* sizeof(float) */
int IO_word_size = 0; /* use what is stored in file */
ex_opts(EX_VERBOSE | EX_ABORT);
/* open EXODUS II files */
exoid = ex_open("test.exo", /* filename path */
EX_READ, /* access mode = READ */
&CPU_word_size, /* CPU word size */
&IO_word_size, /* IO word size */
&version); /* ExodusII library version */
if (exoid < 0)
exit(1);
if (!ex_inquire_int(exoid, EX_INQ_THREADSAFE)) {
fprintf(stderr,
"ERROR: This exodus library is not compiled to allow thread-safe operations.\n");
exit(1);
}
return exoid;
}
int main(int argc, char *argv[])
{
pthread_t threads[NUM_THREADS];
int rc;
long t;
int exoid = init_file(NUM_NODAL_VAR);
param arg[NUM_THREADS];
printf("Running on %d threads\n", NUM_THREADS);
for (t = 0; t < NUM_THREADS; t++) {
arg[t].exoid = exoid;
arg[t].threadid = t;
arg[t].timestep = 1;
rc = pthread_create(&threads[t], NULL, input_nodal_var, (void *)(arg + t));
if (rc) {
printf("ERROR; return code from pthread_create() is %d\n", rc);
exit(-1);
}
}
for (t = 0; t < NUM_THREADS; t++) {
pthread_join(threads[t], NULL);
}
ex_close(exoid);
}