Add a seed to the flux example. (huggingface#2529)

candle-examples/examples/flux/main.rs

@@ -45,9 +45,13 @@ struct Args {
     #[arg(long, value_enum, default_value = "schnell")]
     model: Model,
 
-    /// Use the faster kernels which are buggy at the moment.
+    /// Use the slower kernels.
     #[arg(long)]
-    no_dmmv: bool,
+    use_dmmv: bool,
+
+    /// The seed to use when generating random samples.
+    #[arg(long)]
+    seed: Option<u64>,
 }
 
 #[derive(Debug, Clone, Copy, clap::ValueEnum, PartialEq, Eq)]
@@ -91,6 +95,9 @@ fn run(args: Args) -> Result<()> {
         api.repo(hf_hub::Repo::model(name.to_string()))
     };
     let device = candle_examples::device(cpu)?;
+    if let Some(seed) = args.seed {
+        device.set_seed(seed)?;
+    }
     let dtype = device.bf16_default_to_f32();
     let img = match decode_only {
         None => {
@@ -250,6 +257,6 @@ fn run(args: Args) -> Result<()> {
 fn main() -> Result<()> {
     let args = Args::parse();
     #[cfg(feature = "cuda")]
-    candle::quantized::cuda::set_force_dmmv(!args.no_dmmv);
+    candle::quantized::cuda::set_force_dmmv(args.use_dmmv);
     run(args)
 }