blob: 0ef4dbcc740c68613fb735f1d83ac7f046633c8a (
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
|
/*
// Copyright (c) 2016 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
*/
#include "include/include_all.cl"
__attribute__((intel_reqd_sub_group_size(16)))
KERNEL(softmax)(__global INPUT0_TYPE* input, __global OUTPUT_TYPE* output)
{
const uint other0 = get_global_id(0);
const uint other1 = get_global_id(1);
const uint batch = get_global_id(2);
const uint in_depth_offset = batch*INPUT0_BATCH_PITCH + other1*INPUT0_OTHER1_PITCH + other0*INPUT0_OTHER0_PITCH + INPUT0_OFFSET;
const uint out_depth_offset = batch*OUTPUT_BATCH_PITCH + other1*OUTPUT_OTHER1_PITCH + other0*OUTPUT_OTHER0_PITCH + OUTPUT_OFFSET;
UNIT_TYPE max_value = UNIT_VAL_MIN;
UNIT_TYPE data[INPUT0_CLASS_NUM];
for (uint cls = 0; cls < INPUT0_CLASS_NUM; ++cls)
{
const uint index = in_depth_offset + cls*INPUT0_CLASS_PITCH;
UNIT_TYPE in = input[index];
max_value = max(max_value, in);
data[cls] = in;
}
// TODO: currently we calculate on float32 because it's lot of "add" operation and it stuck on the value "8192.0f"
ACCUMULATOR_TYPE denominator = 0.0;
for (uint cls = 0; cls < INPUT0_CLASS_NUM; ++cls)
{
data[cls] = native_exp(data[cls] - max_value);;
denominator += data[cls];
}
for (uint cls = 0; cls < INPUT0_CLASS_NUM; ++cls)
{
const UNIT_TYPE res = data[cls] / (UNIT_TYPE)denominator;
const uint output_idx = out_depth_offset + cls*OUTPUT_CLASS_PITCH;
output[output_idx] = ACTIVATION(res, NL_M, NL_N);
}
}
|
