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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*
* Copyright (c) 2019-2021 Arm Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "arm_compute/runtime/CL/CLHelpers.h"
#include "arm_compute/core/CL/CLHelpers.h"
#include "arm_compute/core/Error.h"
#include "arm_compute/core/Validate.h"
#include "arm_compute/runtime/CL/CLRuntimeContext.h"
namespace
{
#if defined(ARM_COMPUTE_ASSERTS_ENABLED)
void printf_callback(const char *buffer, unsigned int len, size_t complete, void *user_data)
{
ARM_COMPUTE_UNUSED(complete, user_data);
printf("%.*s", len, buffer);
}
#endif /* defined(ARM_COMPUTE_ASSERTS_ENABLED) */
/** This initialises the properties vector with the configuration to be used when creating the opencl context
*
* @param[in] platform The opencl platform used to create the context
* @param[in] device The opencl device to be used to create the context
* @param[in] prop An array of properties to be initialised
*
* @note In debug builds, this function will enable cl_arm_printf if it's supported.
*
* @return A pointer to the context properties which can be used to create an opencl context
*/
void initialise_context_properties(const cl::Platform &platform,
const cl::Device &device,
std::array<cl_context_properties, 7> &prop)
{
ARM_COMPUTE_UNUSED(device);
#if defined(ARM_COMPUTE_ASSERTS_ENABLED)
// Query devices in the context for cl_arm_printf support
if (arm_compute::device_supports_extension(device, "cl_arm_printf"))
{
// Create a cl_context with a printf_callback and user specified buffer size.
std::array<cl_context_properties, 7> properties_printf = {
CL_CONTEXT_PLATFORM, reinterpret_cast<cl_context_properties>(platform()),
// Enable a printf callback function for this context.
CL_PRINTF_CALLBACK_ARM, reinterpret_cast<cl_context_properties>(printf_callback),
// Request a minimum printf buffer size of 4MB for devices in the
// context that support this extension.
CL_PRINTF_BUFFERSIZE_ARM, 0x1000, 0};
prop = properties_printf;
}
else
#endif // defined(ARM_COMPUTE_ASSERTS_ENABLED)
{
std::array<cl_context_properties, 3> properties = {CL_CONTEXT_PLATFORM,
reinterpret_cast<cl_context_properties>(platform()), 0};
std::copy(properties.begin(), properties.end(), prop.begin());
};
}
} //namespace
namespace arm_compute
{
cl::Platform select_preferable_platform(CLBackendType cl_backend_type)
{
std::vector<cl::Platform> platforms;
cl::Platform::get(&platforms);
ARM_COMPUTE_ERROR_ON_MSG(platforms.size() == 0, "Couldn't find any OpenCL platform");
cl::Platform selected_platform{nullptr};
// If the user has selected the Native platform, return the first available.
switch (cl_backend_type)
{
case CLBackendType::Native:
selected_platform = platforms[0];
break;
case CLBackendType::Clvk:
for (auto p : platforms)
{
std::string res = p.getInfo<CL_PLATFORM_NAME>();
if (res.find("clvk") != std::string::npos)
{
selected_platform = p;
break;
}
}
break;
default:
ARM_COMPUTE_ERROR("Unsupported backend type");
}
if (!selected_platform())
{
ARM_COMPUTE_ERROR("No valid platform found");
}
return selected_platform;
}
std::tuple<cl::Context, cl::Device, cl_int> create_opencl_context_and_device(CLBackendType cl_backend_type)
{
ARM_COMPUTE_ERROR_ON(!opencl_is_available());
cl::Platform p = select_preferable_platform(cl_backend_type);
cl::Device device;
std::vector<cl::Device> platform_devices;
p.getDevices(CL_DEVICE_TYPE_DEFAULT, &platform_devices);
ARM_COMPUTE_ERROR_ON_MSG(platform_devices.size() == 0, "Couldn't find any OpenCL device");
device = platform_devices[0];
cl_int err = CL_SUCCESS;
std::array<cl_context_properties, 7> properties = {0, 0, 0, 0, 0, 0, 0};
initialise_context_properties(p, device, properties);
cl::Context cl_context = cl::Context(device, properties.data(), nullptr, nullptr, &err);
ARM_COMPUTE_ERROR_ON_MSG(err != CL_SUCCESS, "Failed to create OpenCL context");
return std::make_tuple(cl_context, device, err);
}
void schedule_kernel_on_ctx(CLRuntimeContext *ctx, ICLKernel *kernel, bool flush)
{
ARM_COMPUTE_ERROR_ON_NULLPTR(kernel);
if (ctx)
{
ARM_COMPUTE_ERROR_ON(ctx->gpu_scheduler() == nullptr);
ctx->gpu_scheduler()->enqueue(*kernel, flush);
}
else
{
CLScheduler::get().enqueue(*kernel, flush);
}
}
} // namespace arm_compute
|
