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#include <stdlib.h>
#include <stdio.h>
#include "../../support/timer.h"
#if NUMA
#include <numaif.h>
#include <numa.h>
struct bitmask* bitmask_in;
struct bitmask* bitmask_out;
void* mp_pages[1];
int mp_status[1];
int mp_nodes[1];
int numa_node_in = -1;
int numa_node_out = -1;
int numa_node_cpu = -1;
#endif
#include "gemv_utils.h"
int main(int argc, char *argv[])
{
(void) argc;
const size_t rows = 20480;
const size_t cols = 8192;
double **A, *b, *x;
#if NUMA
bitmask_in = numa_parse_nodestring(argv[1]);
bitmask_out = numa_parse_nodestring(argv[2]);
numa_node_cpu = atoi(argv[3]);
#endif
#if NUMA
if (bitmask_out) {
numa_set_membind(bitmask_out);
numa_free_nodemask(bitmask_out);
}
b = (double*) numa_alloc(sizeof(double)*rows);
#else
b = (double*) malloc(sizeof(double)*rows);
#endif
#if NUMA
if (bitmask_in) {
numa_set_membind(bitmask_in);
// no free yet, re-used in allocate_dense
}
x = (double*) numa_alloc(sizeof(double)*cols);
#else
x = (double*) malloc(sizeof(double)*cols);
#endif
allocate_dense(rows, cols, &A);
make_hilbert_mat(rows,cols, &A);
#if NUMA
struct bitmask *bitmask_all = numa_allocate_nodemask();
numa_bitmask_setall(bitmask_all);
numa_set_membind(bitmask_all);
numa_free_nodemask(bitmask_all);
#endif
#if NUMA
mp_pages[0] = A;
if (move_pages(0, 1, mp_pages, NULL, mp_status, 0) == -1) {
perror("move_pages(A)");
}
else if (mp_status[0] < 0) {
printf("move_pages(A) error: %d", mp_status[0]);
}
else {
numa_node_in = mp_status[0];
}
mp_pages[0] = b;
if (move_pages(0, 1, mp_pages, NULL, mp_status, 0) == -1) {
perror("move_pages(b)");
}
else if (mp_status[0] < 0) {
printf("move_pages(b) error: %d", mp_status[0]);
}
else {
numa_node_out = mp_status[0];
}
if (numa_node_cpu != -1) {
if (numa_run_on_node(numa_node_cpu) == -1) {
perror("numa_run_on_node");
numa_node_cpu = -1;
}
}
#endif
Timer timer;
for (int i = 0; i < 100; i++) {
#pragma omp parallel
{
#pragma omp for
for (size_t i = 0; i < cols; i++) {
x[i] = (double) i+1 ;
}
#pragma omp for
for (size_t i = 0; i < rows; i++) {
b[i] = (double) 0.0;
}
}
unsigned int nr_threads = 0;
#pragma omp parallel
#pragma omp atomic
nr_threads++;
start(&timer, 0, 0);
gemv(A, x, rows, cols, &b);
stop(&timer, 0);
printf("[::] GEMV-CPU | n_threads=%d e_type=%s n_elements=%ld"
#if NUMA
" numa_node_in=%d numa_node_out=%d numa_node_cpu=%d numa_distance_in_cpu=%d numa_distance_cpu_out=%d"
#endif
" | throughput_MBps=%f",
nr_threads, "double", rows * cols,
#if NUMA
numa_node_in, numa_node_out, numa_node_cpu, numa_distance(numa_node_in, numa_node_cpu), numa_distance(numa_node_cpu, numa_node_out),
#endif
rows * cols * sizeof(double) / timer.time[0]);
printf(" throughput_MOpps=%f",
rows * cols / timer.time[0]);
printall(&timer, 0);
}
#if 0
print_vec(x, rows);
print_mat(A, rows, cols);
print_vec(b, rows);
#endif
printf("sum(x) = %f, sum(Ax) = %f\n", sum_vec(x,cols), sum_vec(b,rows));
#if NUMA
numa_free(b, sizeof(double)*rows);
numa_free(x, sizeof(double)*cols);
numa_free(*A, sizeof(double)*rows*cols);
numa_free(A, sizeof(double)*rows);
#else
free(b);
free(x);
free(*A);
free(A);
#endif
return 0;
}
void gemv(double** A, double* x, size_t rows, size_t cols, double** b) {
#pragma omp parallel for
for (size_t i = 0; i < rows; i ++ )
for (size_t j = 0; j < cols; j ++ ) {
(*b)[i] = (*b)[i] + A[i][j]*x[j];
}
}
void make_hilbert_mat(size_t rows, size_t cols, double*** A) {
#pragma omp parallel for
for (size_t i = 0; i < rows; i++) {
for (size_t j = 0; j < cols; j++) {
(*A)[i][j] = 1.0/( (double) i + (double) j + 1.0);
}
}
}
double sum_vec(double* vec, size_t rows) {
double sum = 0.0;
#pragma omp parallel for reduction(+:sum)
for (int i = 0; i < rows; i++) sum = sum + vec[i];
return sum;
}
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