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/**
* app.c
* WRAM Access 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
#define XSTR(x) STR(x)
#define STR(x) #x
// Pointer declaration
static unsigned int* A;
static T* B;
static T* C;
static T* C2;
// Create input arrays
#ifdef strided
static void read_input(unsigned int* A, T* B, unsigned int nr_elements, unsigned int stride) {
#else
static void read_input(unsigned int* A, T* B, unsigned int nr_elements) {
#endif
srand(0);
printf("nr_elements\t%u\t", nr_elements);
for (unsigned int i = 0; i < nr_elements; i++) {
#ifdef streaming
A[i] = i % (BLOCK_SIZE >> DIV);
#elif strided
A[i] = ((i>0 ? A[i-1]:0) + stride) % (BLOCK_SIZE >> DIV);
#else
A[i] = ((unsigned int)rand()) % (BLOCK_SIZE >> DIV);
#endif
B[i] = (T)(rand());
C[i] = 0;
}
}
#ifdef streaming
char transfer_mode[] = "streaming";
#elif strided
char transfer_mode[] = "strided";
#else
char transfer_mode[] = "random";
#endif
// Compute output in the host
static void copy_host(T* C, T* B, unsigned int* A, unsigned int nr_elements) {
unsigned int wram_size = BLOCK_SIZE >> DIV;
for (unsigned int i = 0; i < nr_elements / wram_size; i++) {
for (unsigned int j = 0; j < wram_size; j++) {
unsigned int address = A[i * wram_size + j];
C[i * wram_size + address] = B[i * wram_size + address];
}
}
}
// 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;
uint32_t nr_of_ranks;
// 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));
DPU_ASSERT(dpu_get_nr_ranks(dpu_set, &nr_of_ranks));
printf("Allocated %d DPU(s)\n", nr_of_dpus);
unsigned int i = 0;
double cc = 0;
double cc_min = 0;
const unsigned int input_size = p.exp == 0 ? p.input_size * nr_of_dpus : p.input_size;
// Input/output allocation
A = malloc(input_size * sizeof(unsigned int));
unsigned int *bufferA = A;
B = malloc(input_size * sizeof(T));
T *bufferB = B;
C = malloc(input_size * sizeof(T));
T *bufferC = C;
C2 = malloc(input_size * sizeof(T));
// Create an input file with arbitrary data
#ifdef strided
read_input(A, B, input_size, p.stride);
#else
read_input(A, B, input_size);
#endif
// 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);
copy_host(C2, B, A, 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
const unsigned int input_size_dpu = input_size / nr_of_dpus;
unsigned int kernel = 0;
dpu_arguments_t input_arguments = {input_size_dpu, kernel};
DPU_ASSERT(dpu_copy_to(dpu_set, "DPU_INPUT_ARGUMENTS", 0, (const void *)&input_arguments, sizeof(input_arguments)));
// Copy input arrays
i = 0;
DPU_FOREACH (dpu_set, dpu) {
DPU_ASSERT(dpu_copy_to(dpu, DPU_MRAM_HEAP_POINTER_NAME, 0, bufferA + input_size_dpu * i, input_size_dpu * sizeof(unsigned int)));
DPU_ASSERT(dpu_copy_to(dpu, DPU_MRAM_HEAP_POINTER_NAME, input_size_dpu * sizeof(unsigned int), bufferB + input_size_dpu * i, input_size_dpu * sizeof(T)));
DPU_ASSERT(dpu_copy_to(dpu, DPU_MRAM_HEAP_POINTER_NAME, input_size_dpu * (sizeof(unsigned int) + sizeof(T)), bufferC + input_size_dpu * i, input_size_dpu * sizeof(T)));
i++;
}
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);
DPU_ASSERT(dpu_launch(dpu_set, DPU_SYNCHRONOUS));
if(rep >= p.n_warmup)
stop(&timer, 2);
#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);
dpu_results_t results[nr_of_dpus];
i = 0;
DPU_FOREACH (dpu_set, dpu) {
// Copy output array
DPU_ASSERT(dpu_copy_from(dpu, DPU_MRAM_HEAP_POINTER_NAME, input_size_dpu * (sizeof(unsigned int) + sizeof(T)), bufferC + input_size_dpu * i, input_size_dpu * sizeof(T)));
#if PERF
results[i].cycles = 0;
// Retrieve tasklet timings
for (unsigned int each_tasklet = 0; each_tasklet < NR_TASKLETS; each_tasklet++) {
dpu_results_t result;
result.cycles = 0;
DPU_ASSERT(dpu_copy_from(dpu, "DPU_RESULTS", each_tasklet * sizeof(dpu_results_t), &result, sizeof(dpu_results_t)));
printf("[::] DMA UPMEM | n_dpus=%d n_ranks=%d n_tasklets=%d e_type=%s n_elements=%u e_mode=%s block_size_B=%d"
" | dpu_cycles=%lu\n",
nr_of_dpus, nr_of_ranks, NR_TASKLETS, XSTR(T), input_size_dpu, transfer_mode, BLOCK_SIZE,
result.cycles);
if (result.cycles > results[i].cycles)
results[i].cycles = result.cycles;
}
#endif
i++;
}
if(rep >= p.n_warmup)
stop(&timer, 3);
#if PERF
uint64_t max_cycles = 0;
uint64_t min_cycles = 0xFFFFFFFFFFFFFFFF;
// Print performance results
if(rep >= p.n_warmup){
i = 0;
DPU_FOREACH(dpu_set, dpu) {
if(results[i].cycles > max_cycles)
max_cycles = results[i].cycles;
if(results[i].cycles < min_cycles)
min_cycles = results[i].cycles;
i++;
}
cc += (double)max_cycles;
cc_min += (double)min_cycles;
}
#endif
}
printf("DPU cycles = %g cc\n", cc / p.n_reps);
// Check output
bool status = true;
for (i = 0; i < input_size; i++) {
if(C2[i] != bufferC[i]){
status = false;
#if PRINT
printf("%d: %u -- %u\n", i, C2[i], bufferC[i]);
#endif
}
}
// Deallocation
free(A);
free(B);
free(C);
free(C2);
DPU_ASSERT(dpu_free(dpu_set));
return status ? 0 : -1;
}
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