use is_host to recursively check residency to skip validation

encodings/runend/src/array.rs

@@ -212,9 +212,8 @@ impl RunEndArray {
             return Ok(());
         }
 
-        // Skip host-only validation when buffers are on the GPU.
-        let ends_on_device = ends.buffer_handles().iter().any(|h| h.is_on_device());
-        if ends_on_device {
+        // Skip host-only validation when ends are not host-resident.
+        if !ends.is_host() {
             return Ok(());
         }
 

vortex-array/src/arrays/dict/array.rs

@@ -156,13 +156,8 @@ impl DictArray {
     /// This is primarily useful for testing and debugging.
     pub fn validate_all_values_referenced(&self) -> VortexResult<()> {
         if self.all_values_referenced {
-            // Skip host-only validation when buffers are on the GPU.
-            let codes_on_device = self
-                .codes()
-                .buffer_handles()
-                .iter()
-                .any(|h| h.is_on_device());
-            if codes_on_device {
+            // Skip host-only validation when codes are not host-resident.
+            if !self.codes().is_host() {
                 return Ok(());
             }
 

vortex-array/src/arrays/listview/array.rs

@@ -264,11 +264,8 @@ impl ListViewArray {
             );
         }
 
-        // Skip host-only validation when buffers are on the GPU.
-        let offsets_on_device = offsets.buffer_handles().iter().any(|h| h.is_on_device());
-        let sizes_on_device = sizes.buffer_handles().iter().any(|h| h.is_on_device());
-
-        if !offsets_on_device && !sizes_on_device {
+        // Skip host-only validation when offsets/sizes are not host-resident.
+        if offsets.is_host() && sizes.is_host() {
             let offsets_primitive = offsets.to_primitive();
             let sizes_primitive = sizes.to_primitive();
 

vortex-array/src/arrays/varbin/array.rs

@@ -205,10 +205,8 @@ impl VarBinArray {
             vortex_ensure!(is_sorted, "offsets must be sorted");
         }
 
-        // Skip host-only validation when buffers are on the GPU.
-        let offsets_on_device = offsets.buffer_handles().iter().any(|h| h.is_on_device());
-
-        if !offsets_on_device && bytes.is_on_host() {
+        // Skip host-only validation when offsets/bytes are not host-resident.
+        if offsets.is_host() && bytes.is_on_host() {
             let last_offset = offsets
                 .scalar_at(offsets.len() - 1)?
                 .as_primitive()
@@ -232,9 +230,10 @@ impl VarBinArray {
             );
         }
 
-        // Validate UTF-8 for Utf8 dtype. Skip when buffers are on device.
-        if matches!(dtype, DType::Utf8(_))
-            && !offsets_on_device
+        // Validate UTF-8 for Utf8 dtype. Skip when offsets/bytes are not host-resident.
+        if offsets.is_host()
+            && bytes.is_on_host()
+            && matches!(dtype, DType::Utf8(_))
             && let Some(bytes) = bytes.as_host_opt()
         {
             let primitive_offsets = offsets.to_primitive();