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-rw-r--r--VA/host/app.c222
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diff --git a/VA/host/app.c b/VA/host/app.c
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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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