blob: 8ba6aaff4e0d5ce20c4228ad59691a113476a108 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/*
* 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;
}
|
