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/**
* app.c
* VA 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 "../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;
static T* B;
static T* C;
static T* C2;
// Create input arrays
static void read_input(T* A, T* B, 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());
B[i] = (T) (rand());
}
}
// Compute output in the host
static void vector_addition_host(T* C, T* A, T* B, unsigned int nr_elements) {
for (unsigned int i = 0; i < nr_elements; i++) {
C[i] = A[i] + B[i];
}
}
// 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
// Allocate DPUs and load binary
DPU_ASSERT(dpu_alloc(NR_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);
unsigned int i = 0;
const unsigned int input_size = p.exp == 0 ? p.input_size * nr_of_dpus : p.input_size; // Total input size (weak or strong scaling)
const unsigned int input_size_8bytes =
((input_size * sizeof(T)) % 8) != 0 ? roundup(input_size, 8) : input_size; // Input size per DPU (max.), 8-byte aligned
const unsigned int input_size_dpu = divceil(input_size, nr_of_dpus); // Input size per DPU (max.)
const unsigned int input_size_dpu_8bytes =
((input_size_dpu * sizeof(T)) % 8) != 0 ? roundup(input_size_dpu, 8) : input_size_dpu; // Input size per DPU (max.), 8-byte aligned
// Input/output allocation
A = malloc(input_size_dpu_8bytes * nr_of_dpus * sizeof(T));
B = malloc(input_size_dpu_8bytes * nr_of_dpus * sizeof(T));
C = malloc(input_size_dpu_8bytes * nr_of_dpus * sizeof(T));
C2 = malloc(input_size_dpu_8bytes * nr_of_dpus * sizeof(T));
T *bufferA = A;
T *bufferB = B;
T *bufferC = C2;
// Create an input file with arbitrary data
read_input(A, B, input_size);
// Timer declaration
Timer timer;
printf("NR_TASKLETS\t%d\tBL\t%d\n", NR_TASKLETS, BL);
// Loop over main kernel
for(int rep = 0; rep < p.n_warmup + p.n_reps; rep++) {
// Compute output on CPU (performance comparison and verification purposes)
if(rep >= p.n_warmup)
start(&timer, 0, rep - p.n_warmup);
vector_addition_host(C, A, B, input_size);
if(rep >= p.n_warmup)
stop(&timer, 0);
printf("Load input data\n");
if(rep >= p.n_warmup)
start(&timer, 1, rep - p.n_warmup);
// Input arguments
unsigned int kernel = 0;
dpu_arguments_t input_arguments[NR_DPUS];
for(i=0; i<nr_of_dpus-1; i++) {
input_arguments[i].size=input_size_dpu_8bytes * sizeof(T);
input_arguments[i].transfer_size=input_size_dpu_8bytes * sizeof(T);
input_arguments[i].kernel=kernel;
}
input_arguments[nr_of_dpus-1].size=(input_size_8bytes - input_size_dpu_8bytes * (NR_DPUS-1)) * sizeof(T);
input_arguments[nr_of_dpus-1].transfer_size=input_size_dpu_8bytes * sizeof(T);
input_arguments[nr_of_dpus-1].kernel=kernel;
// Copy input arrays
i = 0;
DPU_FOREACH(dpu_set, dpu, i) {
DPU_ASSERT(dpu_prepare_xfer(dpu, &input_arguments[i]));
}
DPU_ASSERT(dpu_push_xfer(dpu_set, DPU_XFER_TO_DPU, "DPU_INPUT_ARGUMENTS", 0, sizeof(input_arguments[0]), DPU_XFER_DEFAULT));
DPU_FOREACH(dpu_set, dpu, i) {
DPU_ASSERT(dpu_prepare_xfer(dpu, bufferA + input_size_dpu_8bytes * i));
}
DPU_ASSERT(dpu_push_xfer(dpu_set, DPU_XFER_TO_DPU, DPU_MRAM_HEAP_POINTER_NAME, 0, input_size_dpu_8bytes * sizeof(T), DPU_XFER_DEFAULT));
DPU_FOREACH(dpu_set, dpu, i) {
DPU_ASSERT(dpu_prepare_xfer(dpu, bufferB + input_size_dpu_8bytes * i));
}
DPU_ASSERT(dpu_push_xfer(dpu_set, DPU_XFER_TO_DPU, DPU_MRAM_HEAP_POINTER_NAME, input_size_dpu_8bytes * sizeof(T), input_size_dpu_8bytes * sizeof(T), DPU_XFER_DEFAULT));
if(rep >= p.n_warmup)
stop(&timer, 1);
printf("Run program on DPU(s) \n");
// Run DPU kernel
if(rep >= p.n_warmup) {
start(&timer, 2, rep - p.n_warmup);
#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
printf("Retrieve results\n");
if(rep >= p.n_warmup)
start(&timer, 3, rep - p.n_warmup);
i = 0;
// PARALLEL RETRIEVE TRANSFER
DPU_FOREACH(dpu_set, dpu, i) {
DPU_ASSERT(dpu_prepare_xfer(dpu, bufferC + input_size_dpu_8bytes * i));
}
DPU_ASSERT(dpu_push_xfer(dpu_set, DPU_XFER_FROM_DPU, DPU_MRAM_HEAP_POINTER_NAME, input_size_dpu_8bytes * sizeof(T), input_size_dpu_8bytes * sizeof(T), DPU_XFER_DEFAULT));
if(rep >= p.n_warmup)
stop(&timer, 3);
}
// Print timing results
printf("CPU ");
print(&timer, 0, p.n_reps);
printf("CPU-DPU ");
print(&timer, 1, p.n_reps);
printf("DPU Kernel ");
print(&timer, 2, p.n_reps);
printf("DPU-CPU ");
print(&timer, 3, 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 < input_size; i++) {
if(C[i] != bufferC[i]){
status = false;
#if PRINT
printf("%d: %u -- %u\n", i, C[i], bufferC[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);
free(B);
free(C);
free(C2);
DPU_ASSERT(dpu_free(dpu_set));
return status ? 0 : -1;
}
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