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/**
* app.c
* TRNS Host Application Source File
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <dpu.h>
#include <dpu_log.h>
#include <unistd.h>
#include <getopt.h>
#include <assert.h>
#include <math.h>
#include "../support/common.h"
#include "../support/timer.h"
#include "../support/params.h"
// Define the DPU Binary path as DPU_BINARY here
#ifndef DPU_BINARY
#define DPU_BINARY "./bin/dpu_code"
#endif
#if ENERGY
#include <dpu_probe.h>
#endif
// Pointer declaration
static T* A_host;
static T* A_backup;
static T* A_result;
// Create input arrays
static void read_input(T* A, unsigned int nr_elements) {
srand(0);
printf("nr_elements\t%u\t", nr_elements);
for (unsigned int i = 0; i < nr_elements; i++) {
A[i] = (T) (rand());
}
}
// Compute output in the host
static void trns_host(T* input, unsigned int A, unsigned int B, unsigned int b){
T* output = (T*) malloc(sizeof(T) * A * B * b);
unsigned int next;
for (unsigned int j = 0; j < b; j++){
for (unsigned int i = 0; i < A * B; i++){
next = (i * A) - (A * B - 1) * (i / B);
output[next * b + j] = input[i*b+j];
}
}
for (unsigned int k = 0; k < A * B * b; k++){
input[k] = output[k];
}
free(output);
}
// Main of the Host Application
int main(int argc, char **argv) {
struct Params p = input_params(argc, argv);
struct dpu_set_t dpu_set, dpu;
uint32_t nr_of_dpus;
#if ENERGY
struct dpu_probe_t probe;
DPU_ASSERT(dpu_probe_init("energy_probe", &probe));
#endif
unsigned int i = 0;
unsigned int N_ = p.N_;
const unsigned int n = p.n;
const unsigned int M_ = p.M_;
const unsigned int m = p.m;
N_ = p.exp == 0 ? N_ * NR_DPUS : N_;
// Input/output allocation
A_host = malloc(M_ * m * N_ * n * sizeof(T));
A_backup = malloc(M_ * m * N_ * n * sizeof(T));
A_result = malloc(M_ * m * N_ * n * sizeof(T));
T* done_host = malloc(M_ * n); // Host array to reset done array of step 3
memset(done_host, 0, M_ * n);
// Create an input file with arbitrary data
read_input(A_host, M_ * m * N_ * n);
memcpy(A_backup, A_host, M_ * m * N_ * n * sizeof(T));
// Timer declaration
Timer timer;
printf("NR_TASKLETS\t%d\n", NR_TASKLETS);
printf("M_\t%u, m\t%u, N_\t%u, n\t%u\n", M_, m, N_, n);
// Loop over main kernel
for(int rep = 0; rep < p.n_warmup + p.n_reps; rep++) {
int timer_fix = 0;
// Compute output on CPU (performance comparison and verification purposes)
memcpy(A_host, A_backup, M_ * m * N_ * n * sizeof(T));
if(rep >= p.n_warmup)
start(&timer, 0, rep - p.n_warmup + timer_fix);
trns_host(A_host, M_ * m, N_ * n, 1);
if(rep >= p.n_warmup)
stop(&timer, 0);
unsigned int curr_dpu = 0;
unsigned int active_dpus;
unsigned int active_dpus_before = 0;
unsigned int first_round = 1;
while(curr_dpu < N_){
// Allocate DPUs and load binary
if((N_ - curr_dpu) > NR_DPUS){
active_dpus = NR_DPUS;
} else {
active_dpus = (N_ - curr_dpu);
}
if((active_dpus_before != active_dpus) && (!(first_round))){
DPU_ASSERT(dpu_free(dpu_set));
DPU_ASSERT(dpu_alloc(active_dpus, NULL, &dpu_set));
DPU_ASSERT(dpu_load(dpu_set, DPU_BINARY, NULL));
DPU_ASSERT(dpu_get_nr_dpus(dpu_set, &nr_of_dpus));
printf("Allocated %d DPU(s)\n", nr_of_dpus);
} else if (first_round){
DPU_ASSERT(dpu_alloc(active_dpus, NULL, &dpu_set));
DPU_ASSERT(dpu_load(dpu_set, DPU_BINARY, NULL));
DPU_ASSERT(dpu_get_nr_dpus(dpu_set, &nr_of_dpus));
printf("Allocated %d DPU(s)\n", nr_of_dpus);
}
printf("Load input data (step 1)\n");
if(rep >= p.n_warmup)
start(&timer, 1, rep - p.n_warmup + timer_fix);
// Load input matrix (step 1)
for(unsigned int j = 0; j < M_ * m; j++){
unsigned int i = 0;
DPU_FOREACH(dpu_set, dpu) {
DPU_ASSERT(dpu_prepare_xfer(dpu, &A_backup[j * N_ * n + n * (i + curr_dpu)]));
i++;
}
DPU_ASSERT(dpu_push_xfer(dpu_set, DPU_XFER_TO_DPU, DPU_MRAM_HEAP_POINTER_NAME, sizeof(T) * j * n, sizeof(T) * n, DPU_XFER_DEFAULT));
}
if(rep >= p.n_warmup)
stop(&timer, 1);
// Reset done array (for step 3)
DPU_FOREACH(dpu_set, dpu) {
DPU_ASSERT(dpu_prepare_xfer(dpu, done_host));
}
DPU_ASSERT(dpu_push_xfer(dpu_set, DPU_XFER_TO_DPU, DPU_MRAM_HEAP_POINTER_NAME, M_ * m * n * sizeof(T), (M_ * n) / 8 == 0 ? 8 : M_ * n, DPU_XFER_DEFAULT));
unsigned int kernel = 0;
dpu_arguments_t input_arguments = {m, n, M_, kernel};
DPU_FOREACH(dpu_set, dpu, i) {
DPU_ASSERT(dpu_prepare_xfer(dpu, &input_arguments));
}
DPU_ASSERT(dpu_push_xfer(dpu_set, DPU_XFER_TO_DPU, "DPU_INPUT_ARGUMENTS", 0, sizeof(input_arguments), DPU_XFER_DEFAULT));
printf("Run step 2 on DPU(s) \n");
// Run DPU kernel
if(rep >= p.n_warmup){
start(&timer, 2, rep - p.n_warmup + timer_fix);
#if ENERGY
DPU_ASSERT(dpu_probe_start(&probe));
#endif
}
DPU_ASSERT(dpu_launch(dpu_set, DPU_SYNCHRONOUS));
if(rep >= p.n_warmup){
stop(&timer, 2);
#if ENERGY
DPU_ASSERT(dpu_probe_stop(&probe));
#endif
}
#if PRINT
{
unsigned int each_dpu = 0;
printf("Display DPU Logs\n");
DPU_FOREACH (dpu_set, dpu) {
printf("DPU#%d:\n", each_dpu);
DPU_ASSERT(dpulog_read_for_dpu(dpu.dpu, stdout));
each_dpu++;
}
}
#endif
kernel = 1;
dpu_arguments_t input_arguments2 = {m, n, M_, kernel};
DPU_FOREACH(dpu_set, dpu, i) {
DPU_ASSERT(dpu_prepare_xfer(dpu, &input_arguments2));
}
DPU_ASSERT(dpu_push_xfer(dpu_set, DPU_XFER_TO_DPU, "DPU_INPUT_ARGUMENTS", 0, sizeof(input_arguments2), DPU_XFER_DEFAULT));
printf("Run step 3 on DPU(s) \n");
// Run DPU kernel
if(rep >= p.n_warmup){
start(&timer, 3, rep - p.n_warmup + timer_fix);
#if ENERGY
DPU_ASSERT(dpu_probe_start(&probe));
#endif
}
DPU_ASSERT(dpu_launch(dpu_set, DPU_SYNCHRONOUS));
if(rep >= p.n_warmup){
stop(&timer, 3);
#if ENERGY
DPU_ASSERT(dpu_probe_stop(&probe));
#endif
}
#if PRINT
{
unsigned int each_dpu = 0;
printf("Display DPU Logs\n");
DPU_FOREACH (dpu_set, dpu) {
printf("DPU#%d:\n", each_dpu);
DPU_ASSERT(dpulog_read_for_dpu(dpu.dpu, stdout));
each_dpu++;
}
}
#endif
printf("Retrieve results\n");
if(rep >= p.n_warmup)
start(&timer, 4, rep - p.n_warmup + timer_fix);
DPU_FOREACH(dpu_set, dpu) {
DPU_ASSERT(dpu_prepare_xfer(dpu, (T*)(&A_result[curr_dpu * m * n * M_])));
curr_dpu++;
}
DPU_ASSERT(dpu_push_xfer(dpu_set, DPU_XFER_FROM_DPU, DPU_MRAM_HEAP_POINTER_NAME, 0, sizeof(T) * m * n * M_, DPU_XFER_DEFAULT));
if(rep >= p.n_warmup)
stop(&timer, 4);
if(first_round){
first_round = 0;
}
timer_fix++;
}
DPU_ASSERT(dpu_free(dpu_set));
}
// Print timing results
printf("CPU ");
print(&timer, 0, p.n_reps);
printf("CPU-DPU (Step 1) ");
print(&timer, 1, p.n_reps);
printf("Step 2 ");
print(&timer, 2, p.n_reps);
printf("Step 3 ");
print(&timer, 3, p.n_reps);
printf("DPU-CPU ");
print(&timer, 4, p.n_reps);
#if ENERGY
double energy;
DPU_ASSERT(dpu_probe_get(&probe, DPU_ENERGY, DPU_AVERAGE, &energy));
printf("DPU Energy (J): %f\t", energy);
#endif
// Check output
bool status = true;
for (i = 0; i < M_ * m * N_ * n; i++) {
if(A_host[i] != A_result[i]){
status = false;
#if PRINT
printf("%d: %lu -- %lu\n", i, A_host[i], A_result[i]);
#endif
}
}
if (status) {
printf("[" ANSI_COLOR_GREEN "OK" ANSI_COLOR_RESET "] Outputs are equal\n");
} else {
printf("[" ANSI_COLOR_RED "ERROR" ANSI_COLOR_RESET "] Outputs differ!\n");
}
// Deallocation
free(A_host);
free(A_backup);
free(A_result);
free(done_host);
return status ? 0 : -1;
}
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