PrIM -- first commit

1 files changed, 78 insertions, 0 deletions

diff --git a/VA/dpu/task.c b/VA/dpu/task.c
new file mode 100644
index 0000000..bb41303
--- /dev/null
+++ b/VA/dpu/task.c
@@ -0,0 +1,78 @@
+/*
+* Vector addition 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"
+
+__host dpu_arguments_t DPU_INPUT_ARGUMENTS;
+
+// vector_addition: Computes the vector addition of a cached block 
+static void vector_addition(T *bufferB, T *bufferA, unsigned int l_size) {
+    for (unsigned int i = 0; i < l_size; i++){
+        bufferB[i] += bufferA[i];
+    }
+}
+
+// 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);
+
+    uint32_t input_size_dpu_bytes = DPU_INPUT_ARGUMENTS.size; // Input size per DPU in bytes
+    uint32_t input_size_dpu_bytes_transfer = DPU_INPUT_ARGUMENTS.transfer_size; // Transfer input size per DPU in bytes
+
+    // 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;
+    uint32_t mram_base_addr_B = (uint32_t)(DPU_MRAM_HEAP_POINTER + input_size_dpu_bytes_transfer);
+
+    // 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 = base_tasklet; byte_index < input_size_dpu_bytes; byte_index += BLOCK_SIZE * NR_TASKLETS){
+
+        // Bound checking
+        uint32_t l_size_bytes = (byte_index + BLOCK_SIZE >= input_size_dpu_bytes) ? (input_size_dpu_bytes - byte_index) : BLOCK_SIZE;
+
+        // Load cache with current MRAM block
+        mram_read((__mram_ptr void const*)(mram_base_addr_A + byte_index), cache_A, l_size_bytes);
+        mram_read((__mram_ptr void const*)(mram_base_addr_B + byte_index), cache_B, l_size_bytes);
+
+        // Computer vector addition
+        vector_addition(cache_B, cache_A, l_size_bytes >> DIV);
+
+        // Write cache to current MRAM block
+        mram_write(cache_B, (__mram_ptr void*)(mram_base_addr_B + byte_index), l_size_bytes);
+
+    }
+
+    return 0;
+}