enable q8, q5, 5_1, and f32 for linux gpu (#699)

llm/llm.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"runtime"
 
 	"github.com/pbnjay/memory"
 
@@ -37,20 +38,22 @@ func New(workDir, model string, adapters []string, opts api.Options) (LLM, error
 		return nil, err
 	}
 
-	switch ggml.FileType() {
-	case "Q8_0":
-		if ggml.Name() != "gguf" && opts.NumGPU != 0 {
-			// GGML Q8_0 do not support Metal API and will
-			// cause the runner to segmentation fault so disable GPU
-			log.Printf("WARNING: GPU disabled for F32, Q5_0, Q5_1, and Q8_0")
-			opts.NumGPU = 0
-		}
-	case "F32", "Q5_0", "Q5_1":
-		if opts.NumGPU != 0 {
-			// F32, Q5_0, Q5_1, and Q8_0 do not support Metal API and will
-			// cause the runner to segmentation fault so disable GPU
-			log.Printf("WARNING: GPU disabled for F32, Q5_0, Q5_1, and Q8_0")
-			opts.NumGPU = 0
+	if runtime.GOOS == "darwin" {
+		switch ggml.FileType() {
+		case "Q8_0":
+			if ggml.Name() != "gguf" && opts.NumGPU != 0 {
+				// GGML Q8_0 do not support Metal API and will
+				// cause the runner to segmentation fault so disable GPU
+				log.Printf("WARNING: GPU disabled for F32, Q5_0, Q5_1, and Q8_0")
+				opts.NumGPU = 0
+			}
+		case "F32", "Q5_0", "Q5_1":
+			if opts.NumGPU != 0 {
+				// F32, Q5_0, Q5_1, and Q8_0 do not support Metal API and will
+				// cause the runner to segmentation fault so disable GPU
+				log.Printf("WARNING: GPU disabled for F32, Q5_0, Q5_1, and Q8_0")
+				opts.NumGPU = 0
+			}
 		}
 	}