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-rw-r--r--HST-S/host/app.c285
1 files changed, 285 insertions, 0 deletions
diff --git a/HST-S/host/app.c b/HST-S/host/app.c
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+/**
+* app.c
+* HST-S Host Application Source File
+*
+*/
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <math.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 unsigned int* histo_host;
+static unsigned int* histo;
+
+// Create input arrays
+static void read_input(T* A, const Params p) {
+
+ char dctFileName[100];
+ FILE *File = NULL;
+
+ // Open input file
+ unsigned short temp;
+ sprintf(dctFileName, p.file_name);
+ if((File = fopen(dctFileName, "rb")) != NULL) {
+ for(unsigned int y = 0; y < p.input_size; y++) {
+ fread(&temp, sizeof(unsigned short), 1, File);
+ A[y] = (unsigned int)ByteSwap16(temp);
+ if(A[y] >= 4096)
+ A[y] = 4095;
+ }
+ fclose(File);
+ } else {
+ printf("%s does not exist\n", dctFileName);
+ exit(1);
+ }
+}
+
+// Compute output in the host
+static void histogram_host(unsigned int* histo, T* A, unsigned int bins, unsigned int nr_elements, int exp, unsigned int nr_of_dpus) {
+ if(!exp){
+ for (unsigned int i = 0; i < nr_of_dpus; i++) {
+ for (unsigned int j = 0; j < nr_elements; j++) {
+ T d = A[j];
+ histo[i * bins + ((d * bins) >> DEPTH)] += 1;
+ }
+ }
+ }
+ else{
+ for (unsigned int j = 0; j < nr_elements; j++) {
+ T d = A[j];
+ histo[(d * bins) >> DEPTH] += 1;
+ }
+ }
+}
+
+// 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;
+ unsigned int input_size; // Size of input image
+ unsigned int dpu_s = p.dpu_s;
+ if(p.exp == 0)
+ input_size = p.input_size * nr_of_dpus; // Size of input image
+ else if(p.exp == 1)
+ input_size = p.input_size; // Size of input image
+ else
+ input_size = p.input_size * dpu_s; // Size of input image
+
+ 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));
+ T *bufferA = A;
+ histo_host = malloc(p.bins * sizeof(unsigned int));
+ histo = malloc(nr_of_dpus * p.bins * sizeof(unsigned int));
+
+ // Create an input file with arbitrary data
+ read_input(A, p);
+ if(p.exp == 0){
+ for(unsigned int j = 1; j < nr_of_dpus; j++){
+ memcpy(&A[j * input_size_dpu_8bytes], &A[0], input_size_dpu_8bytes * sizeof(T));
+ }
+ }
+ else if(p.exp == 2){
+ for(unsigned int j = 1; j < dpu_s; j++)
+ memcpy(&A[j * p.input_size], &A[0], p.input_size * sizeof(T));
+ }
+
+ // Timer declaration
+ Timer timer;
+
+ printf("NR_TASKLETS\t%d\tBL\t%d\tinput_size\t%u\n", NR_TASKLETS, BL, input_size);
+
+ // Loop over main kernel
+ for(int rep = 0; rep < p.n_warmup + p.n_reps; rep++) {
+ memset(histo_host, 0, p.bins * sizeof(unsigned int));
+ memset(histo, 0, nr_of_dpus * p.bins * sizeof(unsigned int));
+
+ // Compute output on CPU (performance comparison and verification purposes)
+ if(rep >= p.n_warmup)
+ start(&timer, 0, rep - p.n_warmup);
+ histogram_host(histo_host, A, p.bins, p.input_size, 1, nr_of_dpus);
+ 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;
+ i = 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].bins=p.bins;
+ 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].bins=p.bins;
+ 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));
+ 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");
+ i = 0;
+ if(rep >= p.n_warmup)
+ start(&timer, 3, rep - p.n_warmup);
+ // PARALLEL RETRIEVE TRANSFER
+ DPU_FOREACH(dpu_set, dpu, i) {
+ DPU_ASSERT(dpu_prepare_xfer(dpu, histo + p.bins * i));
+ }
+ DPU_ASSERT(dpu_push_xfer(dpu_set, DPU_XFER_FROM_DPU, DPU_MRAM_HEAP_POINTER_NAME, input_size_dpu_8bytes * sizeof(T), p.bins * sizeof(unsigned int), DPU_XFER_DEFAULT));
+
+ // Final histogram merging
+ for(i = 1; i < nr_of_dpus; i++){
+ for(unsigned int j = 0; j < p.bins; j++){
+ histo[j] += histo[j + i * p.bins];
+ }
+ }
+ 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;
+ if(p.exp == 1)
+ for (unsigned int j = 0; j < p.bins; j++) {
+ if(histo_host[j] != histo[j]){
+ status = false;
+#if PRINT
+ printf("%u - %u: %u -- %u\n", j, j, histo_host[j], histo[j]);
+#endif
+ }
+ }
+ else if(p.exp == 2)
+ for (unsigned int j = 0; j < p.bins; j++) {
+ if(dpu_s * histo_host[j] != histo[j]){
+ status = false;
+#if PRINT
+ printf("%u - %u: %u -- %u\n", j, j, dpu_s * histo_host[j], histo[j]);
+#endif
+ }
+ }
+ else
+ for (unsigned int j = 0; j < p.bins; j++) {
+ if(nr_of_dpus * histo_host[j] != histo[j]){
+ status = false;
+#if PRINT
+ printf("%u - %u: %u -- %u\n", j, j, nr_of_dpus * histo_host[j], histo[j]);
+#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(histo_host);
+ free(histo);
+ DPU_ASSERT(dpu_free(dpu_set));
+
+ return status ? 0 : -1;
+}
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