Added some performance tests, set the default GF for w=16 to SPLIT 16,4
and created function for autoconf to call during configure (spot check).master
parent
d23dfbc895
commit
a6a9a0eba3
|
@ -47,10 +47,9 @@ BINDIR=${PREFIX}/bin
|
|||
LIBDIR=${PREFIX}/lib
|
||||
INCDIR=${PREFIX}/include
|
||||
CC = gcc
|
||||
#CFLAGS = -O3 -I$(HOME)/include
|
||||
CFLAGS = -g -I$(HOME)/include
|
||||
CFLAGS = -O3 -I$(HOME)/include
|
||||
|
||||
ALL = reed_sol_test_01
|
||||
ALL = reed_sol_test_01 reed_sol_test_02
|
||||
|
||||
all: $(ALL)
|
||||
|
||||
|
@ -99,3 +98,6 @@ reed_sol_test_01.o: galois.h reed_sol.h jerasure.h
|
|||
reed_sol_test_01: reed_sol_test_01.o galois.o ${LIBDIR}/gf_complete.a jerasure.o reed_sol.o
|
||||
$(CC) $(CFLAGS) -o reed_sol_test_01 reed_sol_test_01.o reed_sol.o jerasure.o galois.o ${LIBDIR}/gf_complete.a
|
||||
|
||||
reed_sol_test_02.o: galois.h reed_sol.h jerasure.h
|
||||
reed_sol_test_02: reed_sol_test_02.o galois.o ${LIBDIR}/gf_complete.a jerasure.o reed_sol.o
|
||||
$(CC) $(CFLAGS) -o reed_sol_test_02 reed_sol_test_02.o reed_sol.o jerasure.o galois.o ${LIBDIR}/gf_complete.a
|
||||
|
|
|
@ -0,0 +1,213 @@
|
|||
/* Examples/reed_sol_01.c
|
||||
Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure Coding Techniques
|
||||
|
||||
Revision 1.2A
|
||||
May 24, 2011
|
||||
|
||||
James S. Plank
|
||||
Department of Electrical Engineering and Computer Science
|
||||
University of Tennessee
|
||||
Knoxville, TN 37996
|
||||
plank@cs.utk.edu
|
||||
|
||||
Copyright (c) 2011, James S. Plank
|
||||
All rights reserved.
|
||||
|
||||
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 the University of Tennessee 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
|
||||
HOLDER 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.
|
||||
|
||||
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
revised by S. Simmerman
|
||||
2/25/08
|
||||
*/
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <gf_complete.h>
|
||||
#include "jerasure.h"
|
||||
#include "reed_sol.h"
|
||||
|
||||
#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
|
||||
|
||||
void
|
||||
timer_start (double *t)
|
||||
{
|
||||
struct timeval tv;
|
||||
|
||||
gettimeofday (&tv, NULL);
|
||||
*t = (double)tv.tv_sec + (double)tv.tv_usec * 1e-6;
|
||||
}
|
||||
|
||||
double
|
||||
timer_split (const double *t)
|
||||
{
|
||||
struct timeval tv;
|
||||
double cur_t;
|
||||
|
||||
gettimeofday (&tv, NULL);
|
||||
cur_t = (double)tv.tv_sec + (double)tv.tv_usec * 1e-6;
|
||||
return (cur_t - *t);
|
||||
}
|
||||
|
||||
usage(char *s)
|
||||
{
|
||||
fprintf(stderr, "usage: reed_sol_test_01 k m w iterations bufsize [additional GF args]- Tests Reed-Solomon in GF(2^w).\n");
|
||||
fprintf(stderr, " \n");
|
||||
fprintf(stderr, " w must be 8, 16 or 32. k+m must be <= 2^w. It sets up a classic\n");
|
||||
fprintf(stderr, " Vandermonde-based distribution matrix and encodes k devices of\n");
|
||||
fprintf(stderr, " <bufsize> bytes each with it. Then it decodes.\n");
|
||||
fprintf(stderr, " \n");
|
||||
fprintf(stderr, "This tests: jerasure_matrix_encode()\n");
|
||||
fprintf(stderr, " jerasure_matrix_decode()\n");
|
||||
fprintf(stderr, " jerasure_print_matrix()\n");
|
||||
fprintf(stderr, " reed_sol_vandermonde_coding_matrix()\n");
|
||||
if (s != NULL) fprintf(stderr, "%s\n", s);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
gf_t* get_gf(int w, int argc, char **argv, int starting)
|
||||
{
|
||||
gf_t *gf = (gf_t*)malloc(sizeof(gf_t));
|
||||
if (create_gf_from_argv(gf, w, argc, argv, starting) == 0) {
|
||||
free(gf);
|
||||
gf = NULL;
|
||||
}
|
||||
return gf;
|
||||
}
|
||||
|
||||
static void fill_buffer(unsigned char *buf, int size)
|
||||
{
|
||||
int i;
|
||||
|
||||
buf[0] = (char)(lrand48() % 256);
|
||||
|
||||
for (i=1; i < size; i++) {
|
||||
buf[i] = ((buf[i-1] + i) % 256);
|
||||
}
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
long l;
|
||||
int k, w, i, j, m, iterations, bufsize;
|
||||
int *matrix;
|
||||
char **data, **coding, **old_values;
|
||||
int *erasures, *erased;
|
||||
int *decoding_matrix, *dm_ids;
|
||||
double t = 0, total_time = 0;
|
||||
gf_t *gf = NULL;
|
||||
|
||||
if (argc < 6) usage(NULL);
|
||||
if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
|
||||
if (sscanf(argv[2], "%d", &m) == 0 || m <= 0) usage("Bad m");
|
||||
if (sscanf(argv[3], "%d", &w) == 0 || (w != 8 && w != 16 && w != 32)) usage("Bad w");
|
||||
if (sscanf(argv[4], "%d", &iterations) == 0) usage("Bad iterations");
|
||||
if (sscanf(argv[5], "%d", &bufsize) == 0) usage("Bad bufsize");
|
||||
if (w <= 16 && k + m > (1 << w)) usage("k + m is too big");
|
||||
|
||||
srand48(time(0));
|
||||
|
||||
gf = get_gf(w, argc, argv, 6);
|
||||
|
||||
if (gf == NULL) {
|
||||
usage("Invalid arguments given for GF!\n");
|
||||
}
|
||||
|
||||
galois_change_technique(gf, w);
|
||||
|
||||
matrix = reed_sol_vandermonde_coding_matrix(k, m, w);
|
||||
|
||||
printf("Last m rows of the Distribution Matrix:\n\n");
|
||||
jerasure_print_matrix(matrix, m, k, w);
|
||||
printf("\n");
|
||||
|
||||
data = talloc(char *, k);
|
||||
for (i = 0; i < k; i++) {
|
||||
data[i] = talloc(char, bufsize);
|
||||
fill_buffer(data[i], bufsize);
|
||||
}
|
||||
|
||||
coding = talloc(char *, m);
|
||||
old_values = talloc(char *, m);
|
||||
for (i = 0; i < m; i++) {
|
||||
coding[i] = talloc(char, bufsize);
|
||||
old_values[i] = talloc(char, bufsize);
|
||||
}
|
||||
|
||||
for (i = 0; i < iterations; i++) {
|
||||
timer_start(&t);
|
||||
jerasure_matrix_encode(k, m, w, matrix, data, coding, bufsize);
|
||||
total_time += timer_split(&t);
|
||||
}
|
||||
|
||||
fprintf(stderr, "Encode thput for %d iterations: %.2f MB/s (%.2f sec)\n", iterations, (double)(k*iterations*bufsize/1024/1024) / total_time, total_time);
|
||||
|
||||
erasures = talloc(int, (m+1));
|
||||
erased = talloc(int, (k+m));
|
||||
for (i = 0; i < m+k; i++) erased[i] = 0;
|
||||
l = 0;
|
||||
for (i = 0; i < m; ) {
|
||||
erasures[i] = ((unsigned int)lrand48())%(k+m);
|
||||
if (erased[erasures[i]] == 0) {
|
||||
erased[erasures[i]] = 1;
|
||||
memcpy(old_values[i], (erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], bufsize);
|
||||
bzero((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], bufsize);
|
||||
i++;
|
||||
}
|
||||
}
|
||||
erasures[i] = -1;
|
||||
|
||||
for (i = 0; i < iterations; i++) {
|
||||
timer_start(&t);
|
||||
jerasure_matrix_decode(k, m, w, matrix, 1, erasures, data, coding, bufsize);
|
||||
total_time += timer_split(&t);
|
||||
}
|
||||
|
||||
fprintf(stderr, "Decode thput for %d iterations: %.2f MB/s (%.2f sec)\n", iterations, (double)(m*iterations*bufsize/1024/1024) / total_time, total_time);
|
||||
|
||||
for (i = 0; i < m; i++) {
|
||||
if (erasures[i] < k) {
|
||||
if (memcmp(data[erasures[i]], old_values[i], bufsize)) {
|
||||
fprintf(stderr, "Decoding failed for %d!\n", erasures[i]);
|
||||
exit(1);
|
||||
}
|
||||
} else {
|
||||
if (memcmp(coding[erasures[i]-k], old_values[i], bufsize)) {
|
||||
fprintf(stderr, "Decoding failed for %d!\n", erasures[i]);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
|
@ -0,0 +1,41 @@
|
|||
GF_COMPLETE_DIR=/usr/local/bin
|
||||
GF_METHODS=${GF_COMPLETE_DIR}/gf_methods
|
||||
ITERATIONS=128
|
||||
BUFSIZE=65536
|
||||
k=12
|
||||
m=2
|
||||
|
||||
# Test all w=8
|
||||
${GF_METHODS} | awk -F: '{ if ($1 == "w=8") print $2; }' |
|
||||
while read method; do
|
||||
echo "Testing ${k} ${m} 8 ${ITERATIONS} ${BUFSIZE} ${method}"
|
||||
./reed_sol_test_02 ${k} ${m} 8 ${ITERATIONS} ${BUFSIZE} ${method}
|
||||
if [[ $? != "0" ]]; then
|
||||
echo "Failed test for ${k} ${m} 8 ${ITERATIONS} ${BUFSIZE} ${method}"
|
||||
exit 1
|
||||
fi
|
||||
done
|
||||
|
||||
# Test all w=16
|
||||
${GF_METHODS} | grep -v 'TABLE' | awk -F: '{ if ($1 == "w=16") print $2; }' |
|
||||
while read method; do
|
||||
echo "Testing ${k} ${m} 16 ${ITERATIONS} ${BUFSIZE} ${method}"
|
||||
./reed_sol_test_02 ${k} ${m} 16 ${ITERATIONS} ${BUFSIZE} ${method}
|
||||
if [[ $? != "0" ]]; then
|
||||
echo "Failed test for ${k} ${m} 16 ${ITERATIONS} ${BUFSIZE} ${method}"
|
||||
exit 1
|
||||
fi
|
||||
done
|
||||
|
||||
# Test all w=32
|
||||
${GF_METHODS} | awk -F: '{ if ($1 == "w=32") print $2; }' |
|
||||
while read method; do
|
||||
echo "Testing ${k} ${m} 32 ${ITERATIONS} ${BUFSIZE} ${method}"
|
||||
./reed_sol_test_02 ${k} ${m} 32 ${ITERATIONS} ${BUFSIZE} ${method}
|
||||
if [[ $? != "0" ]]; then
|
||||
echo "Failed test for ${k} ${m} 32 ${ITERATIONS} ${BUFSIZE} ${method}"
|
||||
exit 1
|
||||
fi
|
||||
done
|
||||
|
||||
echo "Passed all tests!"
|
8
galois.c
8
galois.c
|
@ -196,6 +196,14 @@ static void galois_init_default_field(int w)
|
|||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
if (w == 16) {
|
||||
if (!gf_init_hard(gfp_array[w], w, GF_MULT_SPLIT_TABLE, GF_REGION_ALTMAP, GF_DIVIDE_DEFAULT, 0, 16, 4, NULL, NULL)) {
|
||||
fprintf(stderr, "ERROR -- cannot init default Galois field for w=%d\n", w);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
if (!gf_init_easy(gfp_array[w], w)) {
|
||||
fprintf(stderr, "ERROR -- cannot init default Galois field for w=%d\n", w);
|
||||
exit(1);
|
||||
|
|
13
jerasure.c
13
jerasure.c
|
@ -1380,3 +1380,16 @@ void jerasure_bitmatrix_encode(int k, int m, int w, int *bitmatrix,
|
|||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Exported function for use by autoconf to perform quick
|
||||
* spot-check.
|
||||
*/
|
||||
int jerasure_autoconf_test()
|
||||
{
|
||||
int x = galois_single_multiply(1, 2, 8);
|
||||
if (x != 2) {
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
@ -297,4 +297,6 @@ int *jerasure_matrix_multiply(int *m1, int *m2, int r1, int c1, int r2, int c2,
|
|||
|
||||
void jerasure_get_stats(double *fill_in);
|
||||
|
||||
int jerasure_autoconf_test();
|
||||
|
||||
#endif
|
||||
|
|
Loading…
Reference in New Issue