From 83b572313feceb28807917531565cf0298dab7a1 Mon Sep 17 00:00:00 2001
From: Birte Kristina Friesel <birte.friesel@uos.de>
Date: Thu, 24 Oct 2024 09:07:21 +0200
Subject: Add COUNT benchmark (based on SEL)

---
 COUNT/dpu/task.c | 117 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 COUNT/dpu/task.c

(limited to 'COUNT/dpu')

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 <stdint.h>
+#include <stdio.h>
+#include <defs.h>
+#include <mram.h>
+#include <alloc.h>
+#include <perfcounter.h>
+#include <handshake.h>
+#include <barrier.h>
+
+#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;
+}
-- 
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