Function w8a16_gemv_dual 

pub fn w8a16_gemv_dual(
    gpu: &dyn GpuBackend,
    kernel: KernelHandle,
    input: DevicePtr,
    weight1: DevicePtr,
    row_scale1: DevicePtr,
    output1: DevicePtr,
    weight2: DevicePtr,
    row_scale2: DevicePtr,
    output2: DevicePtr,
    n: u32,
    k: u32,
    stream: u64,
) -> Result<()>

2026-09-25: Two FP8 E4M3 GEMVs over the same BF16 input in one launch; blockIdx.z picks projection 1 or 2. Both have n outputs. Each weight is [n, k] bytes with an FP32 [n/128, k/128] block-scale buffer.