From 83b572313feceb28807917531565cf0298dab7a1 Mon Sep 17 00:00:00 2001 From: Birte Kristina Friesel Date: Thu, 24 Oct 2024 09:07:21 +0200 Subject: Add COUNT benchmark (based on SEL) --- COUNT/Makefile | 40 +++++++ COUNT/dpu/task.c | 117 ++++++++++++++++++ COUNT/host/app.c | 319 +++++++++++++++++++++++++++++++++++++++++++++++++ COUNT/support/common.h | 47 ++++++++ COUNT/support/params.h | 56 +++++++++ COUNT/support/timer.h | 66 ++++++++++ 6 files changed, 645 insertions(+) create mode 100644 COUNT/Makefile create mode 100644 COUNT/dpu/task.c create mode 100644 COUNT/host/app.c create mode 100755 COUNT/support/common.h create mode 100644 COUNT/support/params.h create mode 100755 COUNT/support/timer.h diff --git a/COUNT/Makefile b/COUNT/Makefile new file mode 100644 index 0000000..ed40aac --- /dev/null +++ b/COUNT/Makefile @@ -0,0 +1,40 @@ +NR_TASKLETS ?= 16 +BL ?= 10 +NR_DPUS ?= 1 +ENERGY ?= 0 +WITH_ALLOC_OVERHEAD ?= 0 +WITH_LOAD_OVERHEAD ?= 0 +WITH_FREE_OVERHEAD ?= 0 + +COMMON_INCLUDES := support +HOST_SOURCES := $(wildcard host/*.c) +DPU_SOURCES := $(wildcard dpu/*.c) + +COMMON_FLAGS := -Wall -Wextra -g -I${COMMON_INCLUDES} +HOST_FLAGS := ${COMMON_FLAGS} -std=c11 -O3 `dpu-pkg-config --cflags --libs dpu` -DNR_TASKLETS=${NR_TASKLETS} -DNR_DPUS=${NR_DPUS} -DBL=${BL} -DENERGY=${ENERGY} -DWITH_ALLOC_OVERHEAD=${WITH_ALLOC_OVERHEAD} -DWITH_LOAD_OVERHEAD=${WITH_LOAD_OVERHEAD} -DWITH_FREE_OVERHEAD=${WITH_FREE_OVERHEAD} +DPU_FLAGS := ${COMMON_FLAGS} -O2 -DNR_TASKLETS=${NR_TASKLETS} -DBL=${BL} + +QUIET = @ + +ifdef verbose + QUIET = +endif + +all: bin/host_code bin/dpu_code + +bin: + ${QUIET}mkdir -p bin + +bin/host_code: ${HOST_SOURCES} ${COMMON_INCLUDES} bin + ${QUIET}${CC} -o $@ ${HOST_SOURCES} ${HOST_FLAGS} + +bin/dpu_code: ${DPU_SOURCES} ${COMMON_INCLUDES} bin + ${QUIET}dpu-upmem-dpurte-clang ${DPU_FLAGS} -o $@ ${DPU_SOURCES} + +clean: + ${QUIET}rm -rf bin + +test: all + ${QUIET}bin/host_code + +.PHONY: all clean test diff --git a/COUNT/dpu/task.c b/COUNT/dpu/task.c new file mode 100644 index 0000000..b2ed79b --- /dev/null +++ b/COUNT/dpu/task.c @@ -0,0 +1,117 @@ +/* +* Count with multiple tasklets +* +*/ +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../support/common.h" + +__host dpu_arguments_t DPU_INPUT_ARGUMENTS; +__host dpu_results_t DPU_RESULTS[NR_TASKLETS]; + +// Array for communication between adjacent tasklets +uint32_t message[NR_TASKLETS]; +uint32_t message_partial_count; + +// COUNT in each tasklet +static unsigned int count(T *input){ + unsigned int cnt = 0; + #pragma unroll + for(unsigned int j = 0; j < REGS; j++) { + if(!pred(input[j])) { + cnt++; + } + } + return cnt; +} + +// Handshake with adjacent tasklets +static unsigned int handshake_sync(unsigned int l_count, unsigned int tasklet_id){ + unsigned int p_count; + // Wait and read message + if(tasklet_id != 0){ + handshake_wait_for(tasklet_id - 1); + p_count = message[tasklet_id]; + } else { + p_count = 0; + } + // Write message and notify + if(tasklet_id < NR_TASKLETS - 1){ + message[tasklet_id + 1] = p_count + l_count; + handshake_notify(); + } + return p_count; +} + +// Barrier +BARRIER_INIT(my_barrier, NR_TASKLETS); + +extern int main_kernel1(void); + +int (*kernels[nr_kernels])(void) = {main_kernel1}; + +int main(void) { + // Kernel + return kernels[DPU_INPUT_ARGUMENTS.kernel](); +} + +// main_kernel1 +int main_kernel1() { + unsigned int tasklet_id = me(); +#if PRINT + printf("tasklet_id = %u\n", tasklet_id); +#endif + if (tasklet_id == 0){ // Initialize once the cycle counter + mem_reset(); // Reset the heap + } + // Barrier + barrier_wait(&my_barrier); + + dpu_results_t *result = &DPU_RESULTS[tasklet_id]; + + uint32_t input_size_dpu_bytes = DPU_INPUT_ARGUMENTS.size; + + // Address of the current processing block in MRAM + uint32_t base_tasklet = tasklet_id << BLOCK_SIZE_LOG2; + uint32_t mram_base_addr_A = (uint32_t)DPU_MRAM_HEAP_POINTER; + + // Initialize a local cache to store the MRAM block + T *cache_A = (T *) mem_alloc(BLOCK_SIZE); + + // Initialize shared variable + if(tasklet_id == NR_TASKLETS - 1) + message_partial_count = 0; + // Barrier + barrier_wait(&my_barrier); + + for(unsigned int byte_index = base_tasklet; byte_index < input_size_dpu_bytes; byte_index += BLOCK_SIZE * NR_TASKLETS){ + + // Load cache with current MRAM block + mram_read((__mram_ptr void const*)(mram_base_addr_A + byte_index), cache_A, BLOCK_SIZE); + + // COUNT in each tasklet + uint32_t l_count = count(cache_A); + + // Sync with adjacent tasklets + uint32_t p_count = handshake_sync(l_count, tasklet_id); + + // Barrier + barrier_wait(&my_barrier); + + // Total count in this DPU + if(tasklet_id == NR_TASKLETS - 1){ + result->t_count = message_partial_count + p_count + l_count; + message_partial_count = result->t_count; + } + + } + + return 0; +} diff --git a/COUNT/host/app.c b/COUNT/host/app.c new file mode 100644 index 0000000..7708f6d --- /dev/null +++ b/COUNT/host/app.c @@ -0,0 +1,319 @@ +/** +* app.c +* COUNT Host Application Source File +* +*/ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#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 + +#if ENERGY +#include +#endif + +#include +#include + +// Pointer declaration +static T* A; + +// 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 count_host(T* A, unsigned int nr_elements) { + unsigned int count = 0; + for (unsigned int i = 0; i < nr_elements; i++) { + if(!pred(A[i])) { + count++; + } + } + return count; +} + +// 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; + + // Timer declaration + Timer timer; + + int numa_node_rank = -2; + + // Allocate DPUs and load binary +#if !WITH_ALLOC_OVERHEAD + DPU_ASSERT(dpu_alloc(NR_DPUS, NULL, &dpu_set)); + timer.time[0] = 0; // alloc +#endif +#if !WITH_LOAD_OVERHEAD + 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)); + assert(nr_of_dpus == NR_DPUS); + timer.time[1] = 0; // load +#endif +#if !WITH_FREE_OVERHEAD + timer.time[6] = 0; // free +#endif + +#if ENERGY + struct dpu_probe_t probe; + DPU_ASSERT(dpu_probe_init("energy_probe", &probe)); +#endif + + 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_DPUS : p.input_size; // Total input size (weak or strong scaling) + const unsigned int input_size_dpu_ = divceil(input_size, NR_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 allocation + A = malloc(input_size_dpu_round * NR_DPUS * sizeof(T)); + T *bufferA = A; + + dpu_results_t* results_retrieve[NR_DPUS]; + for (i = 0; i < NR_DPUS; i++) { + results_retrieve[i] = (dpu_results_t*)malloc(NR_TASKLETS * sizeof(dpu_results_t)); + } + + // Create an input file with arbitrary data + read_input(A, input_size, input_size_dpu_round * NR_DPUS); + + 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++) { + +#if WITH_ALLOC_OVERHEAD + if(rep >= p.n_warmup) { + start(&timer, 0, 0); + } + DPU_ASSERT(dpu_alloc(NR_DPUS, NULL, &dpu_set)); + if(rep >= p.n_warmup) { + stop(&timer, 0); + } +#endif +#if WITH_LOAD_OVERHEAD + if(rep >= p.n_warmup) { + start(&timer, 1, 0); + } + DPU_ASSERT(dpu_load(dpu_set, DPU_BINARY, NULL)); + if(rep >= p.n_warmup) { + stop(&timer, 1); + } + DPU_ASSERT(dpu_get_nr_dpus(dpu_set, &nr_of_dpus)); + DPU_ASSERT(dpu_get_nr_ranks(dpu_set, &nr_of_ranks)); + assert(nr_of_dpus == NR_DPUS); +#endif + + // int prev_rank_id = -1; + int rank_id = -1; + DPU_FOREACH (dpu_set, dpu) { + rank_id = dpu_get_rank_id(dpu_get_rank(dpu_from_set(dpu))) & DPU_TARGET_MASK; + if ((numa_node_rank != -2) && numa_node_rank != dpu_get_rank_numa_node(dpu_get_rank(dpu_from_set(dpu)))) { + numa_node_rank = -1; + } else { + numa_node_rank = dpu_get_rank_numa_node(dpu_get_rank(dpu_from_set(dpu))); + } + /* + if (rank_id != prev_rank_id) { + printf("/dev/dpu_rank%d @ NUMA node %d\n", rank_id, numa_node_rank); + prev_rank_id = rank_id; + } + */ + } + + // Compute output on CPU (performance comparison and verification purposes) + if(rep >= p.n_warmup) + start(&timer, 2, 0); + total_count = count_host(A, input_size); + if(rep >= p.n_warmup) + stop(&timer, 2); + + printf("Load input data\n"); + if(rep >= p.n_warmup) + start(&timer, 3, 0); + // 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, 3); + + printf("Run program on DPU(s) \n"); + // Run DPU kernel + if(rep >= p.n_warmup) { + start(&timer, 4, 0); + #if ENERGY + DPU_ASSERT(dpu_probe_start(&probe)); + #endif + } + DPU_ASSERT(dpu_launch(dpu_set, DPU_SYNCHRONOUS)); + if(rep >= p.n_warmup) { + stop(&timer, 4); + #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_DPUS]; + i = 0; + accum = 0; + + if(rep >= p.n_warmup) + start(&timer, 5, 0); + // PARALLEL RETRIEVE TRANSFER + + DPU_FOREACH(dpu_set, dpu, i) { + 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 + accum += results[i].t_count; + } + if(rep >= p.n_warmup) + stop(&timer, 5); + + i = 0; + +#if WITH_ALLOC_OVERHEAD +#if WITH_FREE_OVERHEAD + if(rep >= p.n_warmup) { + start(&timer, 8, 0); + } +#endif + DPU_ASSERT(dpu_free(dpu_set)); +#if WITH_FREE_OVERHEAD + if(rep >= p.n_warmup) { + stop(&timer, 8); + } +#endif +#endif + + // Check output + bool status = true; + if(accum != total_count) status = false; + if (status) { + printf("[" ANSI_COLOR_GREEN "OK" ANSI_COLOR_RESET "] Outputs are equal\n"); + if (rep >= p.n_warmup) { + printf("[::] COUNT-UPMEM | n_dpus=%d n_ranks=%d n_tasklets=%d e_type=%s block_size_B=%d n_elements=%d n_elements_per_dpu=%d", + NR_DPUS, nr_of_ranks, NR_TASKLETS, XSTR(T), BLOCK_SIZE, input_size, input_size_dpu_round); + printf(" b_with_alloc_overhead=%d b_with_load_overhead=%d b_with_free_overhead=%d numa_node_rank=%d ", + WITH_ALLOC_OVERHEAD, WITH_LOAD_OVERHEAD, WITH_FREE_OVERHEAD, numa_node_rank); + printf("| latency_alloc_us=%f latency_load_us=%f latency_cpu_us=%f latency_write_us=%f latency_kernel_us=%f latency_read_us=%f latency_free_us=%f", + timer.time[0], + timer.time[1], + timer.time[2], + timer.time[3], // write + timer.time[4], // kernel + timer.time[5], // read + timer.time[8]); + printf(" latency_total_us=%f", + timer.time[0] + timer.time[1] + timer.time[3] + timer.time[4] + timer.time[5] + timer.time[8]); + printf(" throughput_cpu_MBps=%f throughput_upmem_kernel_MBps=%f throughput_upmem_total_MBps=%f", + input_size * sizeof(T) / timer.time[2], + input_size * sizeof(T) / timer.time[4], + input_size * sizeof(T) / (timer.time[0] + timer.time[1] + timer.time[3] + timer.time[4] + timer.time[5] + timer.time[8]) + ); + printf(" throughput_upmem_wxr_MBps=%f throughput_upmem_lwxr_MBps=%f throughput_upmem_alwxr_MBps=%f", + input_size * sizeof(T) / (timer.time[3] + timer.time[4] + timer.time[5]), + input_size * sizeof(T) / (timer.time[1] + timer.time[3] + timer.time[4] + timer.time[5]), + input_size * sizeof(T) / (timer.time[0] + timer.time[1] + timer.time[3] + timer.time[4] + timer.time[5])); + printf(" throughput_cpu_MOpps=%f throughput_upmem_kernel_MOpps=%f throughput_upmem_total_MOpps=%f", + input_size / timer.time[2], + input_size / timer.time[4], + input_size / (timer.time[0] + timer.time[1] + timer.time[3] + timer.time[4] + timer.time[5] + timer.time[8]) + ); + printf(" throughput_upmem_wxr_MOpps=%f throughput_upmem_lwxr_MOpps=%f throughput_upmem_alwxr_MOpps=%f\n", + input_size / (timer.time[3] + timer.time[4] + timer.time[5]), + input_size / (timer.time[1] + timer.time[3] + timer.time[4] + timer.time[5]), + input_size / (timer.time[0] + timer.time[1] + timer.time[3] + timer.time[4] + timer.time[5])); + } + } else { + printf("[" ANSI_COLOR_RED "ERROR" ANSI_COLOR_RESET "] Outputs differ!\n"); + } + } + + #if ENERGY + double energy; + DPU_ASSERT(dpu_probe_get(&probe, DPU_ENERGY, DPU_AVERAGE, &energy)); + printf("DPU Energy (J): %f\t", energy); + #endif + + // Deallocation + free(A); + +#if !WITH_ALLOC_OVERHEAD + DPU_ASSERT(dpu_free(dpu_set)); +#endif + + return 0; +} diff --git a/COUNT/support/common.h b/COUNT/support/common.h new file mode 100755 index 0000000..72270b0 --- /dev/null +++ b/COUNT/support/common.h @@ -0,0 +1,47 @@ +#ifndef _COMMON_H_ +#define _COMMON_H_ + +// Structures used by both the host and the dpu to communicate information +typedef struct { + uint32_t size; + enum kernels { + kernel1 = 0, + nr_kernels = 1, + } kernel; +} dpu_arguments_t; + +typedef struct { + uint32_t t_count; +} dpu_results_t; + +// Transfer size between MRAM and WRAM +#ifdef BL +#define BLOCK_SIZE_LOG2 BL +#define BLOCK_SIZE (1 << BLOCK_SIZE_LOG2) +#else +#define BLOCK_SIZE_LOG2 8 +#define BLOCK_SIZE (1 << BLOCK_SIZE_LOG2) +#define BL BLOCK_SIZE_LOG2 +#endif + +// Data type +#define T uint64_t +#define REGS (BLOCK_SIZE >> 3) // 64 bits + +// Sample predicate +bool pred(const T x){ + return (x % 2) == 0; +} + +#ifndef ENERGY +#define ENERGY 0 +#endif +#define PRINT 0 + +#define ANSI_COLOR_RED "\x1b[31m" +#define ANSI_COLOR_GREEN "\x1b[32m" +#define ANSI_COLOR_RESET "\x1b[0m" + +#define divceil(n, m) (((n)-1) / (m) + 1) +#define roundup(n, m) ((n / m) * m + m) +#endif diff --git a/COUNT/support/params.h b/COUNT/support/params.h new file mode 100644 index 0000000..bb86211 --- /dev/null +++ b/COUNT/support/params.h @@ -0,0 +1,56 @@ +#ifndef _PARAMS_H_ +#define _PARAMS_H_ + +#include "common.h" + +typedef struct Params { + unsigned int input_size; + int n_warmup; + int n_reps; + int exp; +}Params; + +static void usage() { + fprintf(stderr, + "\nUsage: ./program [options]" + "\n" + "\nGeneral options:" + "\n -h help" + "\n -w # of untimed warmup iterations (default=1)" + "\n -e # of timed repetition iterations (default=3)" + "\n -x Weak (0) or strong (1) scaling (default=0)" + "\n" + "\nBenchmark-specific options:" + "\n -i input size (default=3932160 elements)" + "\n"); +} + +struct Params input_params(int argc, char **argv) { + struct Params p; + p.input_size = 3932160; + p.n_warmup = 1; + p.n_reps = 3; + p.exp = 0; + + int opt; + while((opt = getopt(argc, argv, "hi:w:e:x:")) >= 0) { + switch(opt) { + case 'h': + usage(); + exit(0); + break; + case 'i': p.input_size = atoi(optarg); break; + case 'w': p.n_warmup = atoi(optarg); break; + case 'e': p.n_reps = atoi(optarg); break; + case 'x': p.exp = atoi(optarg); break; + default: + fprintf(stderr, "\nUnrecognized option!\n"); + usage(); + exit(0); + } + } + assert(NR_DPUS > 0 && "Invalid # of dpus!"); + + return p; +} +#endif diff --git a/COUNT/support/timer.h b/COUNT/support/timer.h new file mode 100755 index 0000000..3ec6d87 --- /dev/null +++ b/COUNT/support/timer.h @@ -0,0 +1,66 @@ +/* + * Copyright (c) 2016 University of Cordoba and University of Illinois + * All rights reserved. + * + * Developed by: IMPACT Research Group + * University of Cordoba and University of Illinois + * http://impact.crhc.illinois.edu/ + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * with the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * > Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimers. + * > Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimers in the + * documentation and/or other materials provided with the distribution. + * > Neither the names of IMPACT Research Group, University of Cordoba, + * University of Illinois nor the names of its contributors may be used + * to endorse or promote products derived from this Software without + * specific prior written permission. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH + * THE SOFTWARE. + * + */ + +#include + +typedef struct Timer{ + + struct timeval startTime[9]; + struct timeval stopTime[9]; + double time[9]; + +}Timer; + +void start(Timer *timer, int i, int rep) { + if(rep == 0) { + timer->time[i] = 0.0; + } + gettimeofday(&timer->startTime[i], NULL); +} + +void stop(Timer *timer, int i) { + gettimeofday(&timer->stopTime[i], NULL); + timer->time[i] += (timer->stopTime[i].tv_sec - timer->startTime[i].tv_sec) * 1000000.0 + + (timer->stopTime[i].tv_usec - timer->startTime[i].tv_usec); +} + +void print(Timer *timer, int i, int REP) { printf("Time (ms): %f\t", timer->time[i] / (1000 * REP)); } + +void printall(Timer *timer, int maxt) { + for (int i = 0; i <= maxt; i++) { + printf(" timer%d_us=%f", i, timer->time[i]); + } + printf("\n"); +} -- cgit v1.2.3