fix: auto-enable CUDA for piper backend when NVIDIA GPU detected (#50)

pszymkowiak · web-flow · commit 4288efff1930 · 2026-04-06T15:06:45.000+02:00
diff --git a/src/backend/piper.rs b/src/backend/piper.rs
@@ -145,6 +145,13 @@ impl TtsBackend for PiperBackend {
             }
         }
 
+        // Enable CUDA if available (NVIDIA GPU)
+        if std::path::Path::new("/usr/bin/nvidia-smi").exists()
+            || std::env::var("CUDA_VISIBLE_DEVICES").is_ok()
+        {
+            cmd.arg("--cuda");
+        }
+
         let mut child = cmd
             .stdin(Stdio::piped())
             .stdout(Stdio::null())

Original file line number	Diff line number	Diff line change
`@@ -145,6 +145,13 @@ impl TtsBackend for PiperBackend {`
`145`	`145`	`}`
`146`	`146`	`}`
`147`	`147`
	`148`	`+ // Enable CUDA if available (NVIDIA GPU)`
	`149`	`+ if std::path::Path::new("/usr/bin/nvidia-smi").exists()`
	`150`	`+ \|\| std::env::var("CUDA_VISIBLE_DEVICES").is_ok()`
	`151`	`+ {`
	`152`	`+ cmd.arg("--cuda");`
	`153`	`+ }`
	`154`	`+`
`148`	`155`	`let mut child = cmd`
`149`	`156`	`.stdin(Stdio::piped())`
`150`	`157`	`.stdout(Stdio::null())`