Function gpu_pagerank 

pub async fn gpu_pagerank(
    device: &GpuDevice,
    buffers: &GpuCsrBuffers,
    out_degrees: &[u32],
    max_iterations: usize,
    damping: f32,
) -> Result<GpuPageRankResult>

Run GPU PageRank algorithm

Arguments

• device - GPU device
• buffers - CSR graph buffers
• out_degrees - Out-degree for each node (computed from CSR)
• max_iterations - Maximum number of iterations (typically 20)
• damping - Damping factor (typically 0.85)

Errors

Returns error if:

• GPU shader compilation fails
• Buffer creation fails
• Shader dispatch fails
• Result readback fails

Example

let device = GpuDevice::new().await?;
let mut graph = CsrGraph::new();
// ... add edges ...

let buffers = GpuCsrBuffers::from_csr_graph(&device, &graph)?;
let out_degrees: Vec<u32> = (0..graph.num_nodes())
    .map(|i| graph.outgoing_neighbors(i).len() as u32)
    .collect();
let result = gpu_pagerank(&device, &buffers, &out_degrees, 20, 0.85).await?;

println!("Node 0 score: {:?}", result.score(0));