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
//! # CudaGraph - accessors Methods
//!
//! This module contains method implementations for `CudaGraph`.
//!
//! 🤖 Generated with [SplitRS](https://github.com/cool-japan/splitrs)
use cudarc::driver::CudaSlice;
use std::sync::Arc;
use super::types::CudaGraphError;
use super::cudagraph_type::CudaGraph;
impl CudaGraph {
/// Upload `f32` weights and cache them under `key`.
///
/// On the first call for `key`, the slice is copied to a device buffer and
/// stored in `f32_weight_cache`. Subsequent calls clone the cached `Arc`.
///
/// Unlike [`get_or_upload_weight_soa`], no SoA reformatting is performed;
/// the data is uploaded verbatim as typed `f32` device memory.
pub fn get_or_upload_f32_weight(
&self,
key: u64,
data: &[f32],
) -> Result<Arc<CudaSlice<f32>>, CudaGraphError> {
{
let cache = self
.f32_weight_cache
.lock()
.map_err(|_| CudaGraphError::LockPoisoned)?;
if let Some(existing) = cache.get(&key) {
return Ok(Arc::clone(existing));
}
}
let d_buf = self
.stream
.clone_htod(data)
.map_err(|e| CudaGraphError::DriverError(format!("clone_htod f32: {e}")))?;
let arc = Arc::new(d_buf);
let mut cache = self
.f32_weight_cache
.lock()
.map_err(|_| CudaGraphError::LockPoisoned)?;
cache.insert(key, Arc::clone(&arc));
Ok(arc)
}
/// Evict a previously-uploaded `f32` weight from the cache.
///
/// Dropping the cached [`Arc`] frees the device buffer once no other handle
/// is outstanding. Intended for callers whose host weight buffers are
/// **transient** — e.g. the dequantise-on-demand text encoder, which
/// allocates a fresh f32 buffer per Linear so its base pointer (the cache
/// `key`) is recycled across calls and is therefore unsafe as a long-lived
/// identity. Evicting right after the GEMM forces the next
/// [`get_or_upload_f32_weight`](Self::get_or_upload_f32_weight) to re-upload
/// fresh data instead of returning a stale buffer that merely shares a
/// recycled address. A `key` that is not present is a no-op.
pub fn evict_f32_weight(&self, key: u64) -> Result<(), CudaGraphError> {
let mut cache = self
.f32_weight_cache
.lock()
.map_err(|_| CudaGraphError::LockPoisoned)?;
cache.remove(&key);
Ok(())
}
}