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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
use super::{stream::Stream, CUresult, GlobalState, HasLivenessCookie, LiveCheck};
use crate::cuda::CUfunction_attribute;
use ::std::os::raw::{c_uint, c_void};
use std::{hint, ptr};
const CU_LAUNCH_PARAM_END: *mut c_void = 0 as *mut _;
const CU_LAUNCH_PARAM_BUFFER_POINTER: *mut c_void = 1 as *mut _;
const CU_LAUNCH_PARAM_BUFFER_SIZE: *mut c_void = 2 as *mut _;
pub type Function = LiveCheck<FunctionData>;
impl HasLivenessCookie for FunctionData {
#[cfg(target_pointer_width = "64")]
const COOKIE: usize = 0x5e2ab14d5840678e;
#[cfg(target_pointer_width = "32")]
const COOKIE: usize = 0x33e6a1e6;
const LIVENESS_FAIL: CUresult = CUresult::CUDA_ERROR_INVALID_HANDLE;
fn try_drop(&mut self) -> Result<(), CUresult> {
Ok(())
}
}
pub struct FunctionData {
pub base: l0::Kernel<'static>,
pub arg_size: Vec<usize>,
pub use_shared_mem: bool,
pub properties: Option<Box<l0::sys::ze_kernel_properties_t>>,
pub legacy_args: LegacyArguments,
}
pub struct LegacyArguments {
block_shape: Option<(i32, i32, i32)>,
}
impl LegacyArguments {
pub fn new() -> Self {
LegacyArguments { block_shape: None }
}
#[allow(dead_code)]
pub fn is_initialized(&self) -> bool {
self.block_shape.is_some()
}
pub fn reset(&mut self) {
self.block_shape = None;
}
}
impl FunctionData {
fn get_properties(&mut self) -> Result<&l0::sys::ze_kernel_properties_t, l0::sys::ze_result_t> {
if let None = self.properties {
self.properties = Some(self.base.get_properties()?)
}
match self.properties {
Some(ref props) => Ok(props.as_ref()),
None => unsafe { hint::unreachable_unchecked() },
}
}
}
pub fn launch_kernel(
f: *mut Function,
grid_dim_x: c_uint,
grid_dim_y: c_uint,
grid_dim_z: c_uint,
block_dim_x: c_uint,
block_dim_y: c_uint,
block_dim_z: c_uint,
shared_mem_bytes: c_uint,
hstream: *mut Stream,
kernel_params: *mut *mut c_void,
extra: *mut *mut c_void,
) -> Result<(), CUresult> {
if f == ptr::null_mut()
|| (kernel_params == ptr::null_mut() && extra == ptr::null_mut())
|| (kernel_params != ptr::null_mut() && extra != ptr::null_mut())
{
return Err(CUresult::CUDA_ERROR_INVALID_VALUE);
}
GlobalState::lock_stream(hstream, |stream| {
let func: &mut FunctionData = unsafe { &mut *f }.as_result_mut()?;
if kernel_params != ptr::null_mut() {
for (i, arg_size) in func.arg_size.iter().enumerate() {
unsafe {
func.base
.set_arg_raw(i as u32, *arg_size, *kernel_params.add(i))?
};
}
} else {
let mut offset = 0;
let mut buffer_ptr = None;
let mut buffer_size = None;
loop {
match unsafe { *extra.add(offset) } {
CU_LAUNCH_PARAM_END => break,
CU_LAUNCH_PARAM_BUFFER_POINTER => {
buffer_ptr = Some(unsafe { *extra.add(offset + 1) as *mut u8 });
}
CU_LAUNCH_PARAM_BUFFER_SIZE => {
buffer_size = Some(unsafe { *(*extra.add(offset + 1) as *mut usize) });
}
_ => return Err(CUresult::CUDA_ERROR_INVALID_VALUE),
}
offset += 2;
}
match (buffer_size, buffer_ptr) {
(Some(buffer_size), Some(buffer_ptr)) => {
let sum_of_kernel_argument_sizes =
func.arg_size.iter().fold(0, |offset, size_of_arg| {
size_of_arg + round_up_to_multiple(offset, *size_of_arg)
});
if buffer_size != sum_of_kernel_argument_sizes {
return Err(CUresult::CUDA_ERROR_INVALID_VALUE);
}
let mut offset = 0;
for (i, arg_size) in func.arg_size.iter().enumerate() {
let buffer_offset = round_up_to_multiple(offset, *arg_size);
unsafe {
func.base.set_arg_raw(
i as u32,
*arg_size,
buffer_ptr.add(buffer_offset) as *const _,
)?
};
offset = buffer_offset + *arg_size;
}
}
_ => return Err(CUresult::CUDA_ERROR_INVALID_VALUE),
}
}
if func.use_shared_mem {
unsafe {
func.base.set_arg_raw(
func.arg_size.len() as u32,
shared_mem_bytes as usize,
ptr::null(),
)?
};
}
func.base
.set_group_size(block_dim_x, block_dim_y, block_dim_z)?;
func.legacy_args.reset();
let mut cmd_list = stream.command_list()?;
cmd_list.append_launch_kernel(
&mut func.base,
&[grid_dim_x, grid_dim_y, grid_dim_z],
None,
&mut [],
)?;
stream.queue.execute(cmd_list)?;
Ok(())
})?
}
fn round_up_to_multiple(x: usize, multiple: usize) -> usize {
((x + multiple - 1) / multiple) * multiple
}
pub(crate) fn get_attribute(
pi: *mut i32,
attrib: CUfunction_attribute,
func: *mut Function,
) -> Result<(), CUresult> {
if pi == ptr::null_mut() || func == ptr::null_mut() {
return Err(CUresult::CUDA_ERROR_INVALID_VALUE);
}
match attrib {
CUfunction_attribute::CU_FUNC_ATTRIBUTE_MAX_THREADS_PER_BLOCK => {
let max_threads = GlobalState::lock_function(func, |func| {
let props = func.get_properties()?;
Ok::<_, CUresult>(props.maxSubgroupSize * props.maxNumSubgroups)
})??;
unsafe { *pi = max_threads as i32 };
Ok(())
}
_ => Err(CUresult::CUDA_ERROR_NOT_SUPPORTED),
}
}
pub(crate) fn set_block_shape(func: *mut Function, x: i32, y: i32, z: i32) -> Result<(), CUresult> {
if func == ptr::null_mut() || x < 0 || y < 0 || z < 0 {
return Err(CUresult::CUDA_ERROR_INVALID_VALUE);
}
GlobalState::lock_function(func, |func| {
func.legacy_args.block_shape = Some((x, y, z));
})
}
|
