diff options
Diffstat (limited to 'SEL/host/app.c')
| -rw-r--r-- | SEL/host/app.c | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/SEL/host/app.c b/SEL/host/app.c new file mode 100644 index 0000000..ef07cf9 --- /dev/null +++ b/SEL/host/app.c @@ -0,0 +1,255 @@ +/** +* app.c +* SEL 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* C; +static T* C2; + +// Create input arrays +static void read_input(T* A, unsigned int nr_elements, unsigned int nr_elements_round) { + //srand(0); + printf("nr_elements\t%u\t", nr_elements); + for (unsigned int i = 0; i < nr_elements; i++) { + //A[i] = (T) (rand()); + A[i] = i + 1; + } + for (unsigned int i = nr_elements; i < nr_elements_round; i++) { // Complete with removable elements + A[i] = 0; + } +} + +// Compute output in the host +static unsigned int select_host(T* C, T* A, unsigned int nr_elements) { + unsigned int pos = 0; + for (unsigned int i = 0; i < nr_elements; i++) { + if(!pred(A[i])) { + C[pos] = A[i]; + pos++; + } + } + return pos; +} + +// 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; + uint32_t accum = 0; + uint32_t total_count = 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_dpu_ = divceil(input_size, nr_of_dpus); // Input size per DPU (max.) + const unsigned int input_size_dpu_round = + (input_size_dpu_ % (NR_TASKLETS * REGS) != 0) ? roundup(input_size_dpu_, (NR_TASKLETS * REGS)) : input_size_dpu_; // Input size per DPU (max.), 8-byte aligned + + // Input/output allocation + A = malloc(input_size_dpu_round * nr_of_dpus * sizeof(T)); + C = malloc(input_size_dpu_round * nr_of_dpus * sizeof(T)); + C2 = malloc(input_size_dpu_round * nr_of_dpus * sizeof(T)); + T *bufferA = A; + T *bufferC = C2; + + // Create an input file with arbitrary data + read_input(A, input_size, input_size_dpu_round * nr_of_dpus); + + // 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); + total_count = select_host(C, 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_dpu_round; + unsigned int kernel = 0; + dpu_arguments_t input_arguments = {input_size_dpu * sizeof(T), kernel}; + // Copy input arrays + i = 0; + 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)); + DPU_FOREACH(dpu_set, dpu, i) { + DPU_ASSERT(dpu_prepare_xfer(dpu, bufferA + input_size_dpu * i)); + } + DPU_ASSERT(dpu_push_xfer(dpu_set, DPU_XFER_TO_DPU, DPU_MRAM_HEAP_POINTER_NAME, 0, input_size_dpu * 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"); + dpu_results_t results[nr_of_dpus]; + uint32_t* results_scan = malloc(nr_of_dpus * sizeof(uint32_t)); + i = 0; + accum = 0; + + if(rep >= p.n_warmup) + start(&timer, 3, rep - p.n_warmup); + // PARALLEL RETRIEVE TRANSFER + dpu_results_t* results_retrieve[nr_of_dpus]; + + DPU_FOREACH(dpu_set, dpu, i) { + results_retrieve[i] = (dpu_results_t*)malloc(NR_TASKLETS * sizeof(dpu_results_t)); + DPU_ASSERT(dpu_prepare_xfer(dpu, results_retrieve[i])); + } + DPU_ASSERT(dpu_push_xfer(dpu_set, DPU_XFER_FROM_DPU, "DPU_RESULTS", 0, NR_TASKLETS * sizeof(dpu_results_t), DPU_XFER_DEFAULT)); + + DPU_FOREACH(dpu_set, dpu, i) { + // Retrieve tasklet timings + for (unsigned int each_tasklet = 0; each_tasklet < NR_TASKLETS; each_tasklet++) { + // Count of this DPU + if(each_tasklet == NR_TASKLETS - 1){ + results[i].t_count = results_retrieve[i][each_tasklet].t_count; + } + } + // Sequential scan + uint32_t temp = results[i].t_count; + results_scan[i] = accum; + accum += temp; +#if PRINT + printf("i=%d -- %u, %u, %u\n", i, results_scan[i], accum, temp); +#endif + free(results_retrieve[i]); + } + if(rep >= p.n_warmup) + stop(&timer, 3); + + i = 0; + if(rep >= p.n_warmup) + start(&timer, 4, rep - p.n_warmup); + DPU_FOREACH (dpu_set, dpu) { + // Copy output array + DPU_ASSERT(dpu_copy_from(dpu, DPU_MRAM_HEAP_POINTER_NAME, input_size_dpu * sizeof(T), bufferC + results_scan[i], results[i].t_count * sizeof(T))); + + i++; + } + if(rep >= p.n_warmup) + stop(&timer, 4); + + // Free memory + free(results_scan); + } + + // 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("Inter-DPU "); + 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; + if(accum != total_count) status = false; + for (i = 0; i < accum; i++) { + if(C[i] != bufferC[i]){ + status = false; +#if PRINT + printf("%d: %lu -- %lu\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(C); + free(C2); + DPU_ASSERT(dpu_free(dpu_set)); + + return status ? 0 : -1; +} |