Add GLM 5.2 Metal execution

src/engine/metal/checkpoint.rs

@@ -1,6 +1,6 @@
 use super::*;
 
-impl Executor {
+impl DeepSeekExecutor {
     pub(in crate::engine) fn save_checkpoint(
         &mut self,
         path: &Path,
@@ -305,12 +305,37 @@ impl Executor {
     }
 }
 
+impl Executor {
+    pub(in crate::engine) fn save_checkpoint(
+        &mut self,
+        path: &Path,
+        tag: [u8; 32],
+        progress: &mut impl FnMut(u64),
+    ) -> Result<(), String> {
+        match self {
+            Self::DeepSeek(executor) => executor.save_checkpoint(path, tag, progress),
+            Self::Glm(executor) => executor.save_checkpoint(path, tag, progress),
+        }
+    }
+
+    pub(in crate::engine) fn load_checkpoint(
+        &mut self,
+        path: &Path,
+        progress: &mut impl FnMut(u64),
+    ) -> Result<bool, String> {
+        match self {
+            Self::DeepSeek(executor) => executor.load_checkpoint(path, progress),
+            Self::Glm(executor) => executor.load_checkpoint(path, progress),
+        }
+    }
+}
+
 fn compressor_state_bytes(ratio: u32, head_dim: u64) -> u64 {
     let coefficient = if ratio == 4 { 2 } else { 1 };
     coefficient * head_dim * coefficient * u64::from(ratio) * 4
 }
 
-fn write_buffer(
+pub(super) fn write_buffer(
     file: &mut File,
     buffer: &Buffer,
     mut offset: u64,
@@ -330,7 +355,7 @@ fn write_buffer(
     Ok(())
 }
 
-fn read_buffer(
+pub(super) fn read_buffer(
     file: &mut File,
     buffer: &Buffer,
     mut offset: u64,
@@ -350,24 +375,24 @@ fn read_buffer(
     Ok(())
 }
 
-fn write_u32(file: &mut File, value: u32) -> Result<(), String> {
+pub(super) fn write_u32(file: &mut File, value: u32) -> Result<(), String> {
     file.write_all(&value.to_le_bytes())
         .map_err(|error| error.to_string())
 }
 
-fn write_u64(file: &mut File, value: u64) -> Result<(), String> {
+pub(super) fn write_u64(file: &mut File, value: u64) -> Result<(), String> {
     file.write_all(&value.to_le_bytes())
         .map_err(|error| error.to_string())
 }
 
-fn read_u32(file: &mut File) -> Result<u32, String> {
+pub(super) fn read_u32(file: &mut File) -> Result<u32, String> {
     let mut bytes = [0; 4];
     file.read_exact(&mut bytes)
         .map_err(|error| error.to_string())?;
     Ok(u32::from_le_bytes(bytes))
 }
 
-fn read_u64(file: &mut File) -> Result<u64, String> {
+pub(super) fn read_u64(file: &mut File) -> Result<u64, String> {
     let mut bytes = [0; 8];
     file.read_exact(&mut bytes)
         .map_err(|error| error.to_string())?;