cuda_rust_wasm/backend/
native_gpu.rs

1//! Native GPU backend using CUDA/ROCm
2//! 
3//! This module provides native GPU support when CUDA or ROCm is available.
4//! Currently this is a stub implementation.
5
6use crate::{Result, runtime_error};
7use super::backend_trait::{BackendTrait, BackendCapabilities, MemcpyKind};
8use async_trait::async_trait;
9
10/// Check if CUDA is available on the system
11pub fn is_cuda_available() -> bool {
12    // TODO: Actually check for CUDA availability
13    // For now, return false as this is a stub
14    false
15}
16
17/// Native GPU backend implementation
18pub struct NativeGPUBackend {
19    // TODO: Add actual fields for CUDA/ROCm context
20    capabilities: BackendCapabilities,
21}
22
23impl Default for NativeGPUBackend {
24    fn default() -> Self {
25        Self::new()
26    }
27}
28
29impl NativeGPUBackend {
30    /// Create a new native GPU backend
31    pub fn new() -> Self {
32        Self {
33            // TODO: Initialize CUDA/ROCm context
34            capabilities: BackendCapabilities {
35                name: "Native GPU (CUDA/ROCm)".to_string(),
36                supports_cuda: true,
37                supports_opencl: false,
38                supports_vulkan: false,
39                supports_webgpu: false,
40                max_threads: 1024 * 1024,
41                max_threads_per_block: 1024,
42                max_blocks_per_grid: 65535,
43                max_shared_memory: 49152, // 48 KB
44                supports_dynamic_parallelism: true,
45                supports_unified_memory: true,
46                max_grid_dim: [2147483647, 65535, 65535],
47                max_block_dim: [1024, 1024, 64],
48                warp_size: 32,
49            },
50        }
51    }
52}
53
54#[async_trait]
55impl BackendTrait for NativeGPUBackend {
56    fn name(&self) -> &str {
57        "Native GPU (CUDA/ROCm)"
58    }
59    
60    fn capabilities(&self) -> &BackendCapabilities {
61        &self.capabilities
62    }
63    
64    async fn initialize(&mut self) -> Result<()> {
65        // TODO: Initialize CUDA/ROCm runtime
66        Ok(())
67    }
68    
69    async fn compile_kernel(&self, _source: &str) -> Result<Vec<u8>> {
70        Err(runtime_error!("Native GPU backend not implemented"))
71    }
72    
73    async fn launch_kernel(
74        &self,
75        _kernel: &[u8],
76        _grid: (u32, u32, u32),
77        _block: (u32, u32, u32),
78        _args: &[*const u8],
79    ) -> Result<()> {
80        Err(runtime_error!("Native GPU backend not implemented"))
81    }
82    
83    fn allocate_memory(&self, _size: usize) -> Result<*mut u8> {
84        Err(runtime_error!("Native GPU backend not implemented"))
85    }
86    
87    fn free_memory(&self, _ptr: *mut u8) -> Result<()> {
88        Err(runtime_error!("Native GPU backend not implemented"))
89    }
90    
91    fn copy_memory(
92        &self,
93        _dst: *mut u8,
94        _src: *const u8,
95        _size: usize,
96        _kind: MemcpyKind,
97    ) -> Result<()> {
98        Err(runtime_error!("Native GPU backend not implemented"))
99    }
100    
101    fn synchronize(&self) -> Result<()> {
102        Err(runtime_error!("Native GPU backend not implemented"))
103    }
104}
cuda_rust_wasm/backend/native_gpu.rs

cuda_rust_wasm/backend/
native_gpu.rs
