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/*
* Strided access with multiple tasklets
*
*/
#include <stdint.h>
#include <stdio.h>
#include <defs.h>
#include <mram.h>
#include <alloc.h>
#include <perfcounter.h>
#include <barrier.h>
#include "../support/common.h"
#include "../support/cyclecount.h"
__host dpu_arguments_t DPU_INPUT_ARGUMENTS;
__host dpu_results_t DPU_RESULTS[NR_TASKLETS];
// 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
perfcounter_config(COUNT_CYCLES, true);
}
perfcounter_cycles cycles;
// Barrier
barrier_wait(&my_barrier);
timer_start(&cycles); // START TIMER
dpu_results_t *result = &DPU_RESULTS[tasklet_id];
result->cycles = 0;
uint32_t input_size_dpu = DPU_INPUT_ARGUMENTS.size / sizeof(T);
uint32_t s = DPU_INPUT_ARGUMENTS.stride;
// Address of the current processing block in MRAM
uint32_t mram_base_addr_A = (uint32_t)(DPU_MRAM_HEAP_POINTER + (tasklet_id * (input_size_dpu * sizeof(T) / NR_TASKLETS)));
uint32_t mram_base_addr_B = (uint32_t)(DPU_MRAM_HEAP_POINTER + (tasklet_id * (input_size_dpu * sizeof(T) / NR_TASKLETS)) + input_size_dpu * sizeof(T));
#ifdef COARSECOARSE
// BLOCK SIZE
uint32_t B_SIZE = BLOCK_SIZE / sizeof(T);
uint32_t ADDR = (input_size_dpu/NR_TASKLETS) * tasklet_id;
uint32_t j = 0;
// Initialize a local cache to store the MRAM block
T *cache_A = (T *) mem_alloc(BLOCK_SIZE);
T *cache_B = (T *) mem_alloc(BLOCK_SIZE);
for(unsigned int byte_index = 0; byte_index < input_size_dpu * sizeof(T) / NR_TASKLETS; byte_index += BLOCK_SIZE){
// Load cache with current MRAM block
mram_read((__mram_ptr void const*)(mram_base_addr_A + byte_index), cache_A, BLOCK_SIZE);
mram_read((__mram_ptr void const*)(mram_base_addr_B + byte_index), cache_B, BLOCK_SIZE);
// Copy
if(((ADDR + j * B_SIZE) & (s - 1)) == 0){
for(unsigned int i = 0; i < B_SIZE; i += s){
cache_B[i] = cache_A[i];
}
}
// Write cache to current MRAM block
mram_write(cache_B, (__mram_ptr void*)(mram_base_addr_B + byte_index), BLOCK_SIZE);
j++;
}
#else // FINEFINE
// Initialize a local cache to store the MRAM block
T *cache_A = (T *) mem_alloc(sizeof(T));
uint32_t stride = (uint32_t)(s * sizeof(T));
for(unsigned int byte_index = 0; byte_index < input_size_dpu * sizeof(T) / NR_TASKLETS; byte_index += stride){
// Load cache with current MRAM block
mram_read((__mram_ptr void const*)(mram_base_addr_A + byte_index), cache_A, sizeof(T));
// Write cache to current MRAM block
mram_write(cache_A, (__mram_ptr void*)(mram_base_addr_B + byte_index), sizeof(T));
}
#endif
result->cycles = timer_stop(&cycles); // STOP TIMER
return 0;
}
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