Function set_kernel_arg 

pub fn set_kernel_arg(
    kernel: &Kernel,
    index: u32,
    arg_val: ArgVal<'_>,
) -> Result<()>

Sets the argument value for the kernel argument at index.

Example:

let kernel = core::create_kernel(&program, "multiply")?;
core::set_kernel_arg(&kernel, 0, ArgVal::scalar(&10.0f32))?;
core::set_kernel_arg(&kernel, 1, ArgVal::mem(&buffer))?;

SDK Documentation