Perform GPU match only when we are going through the optimized profile (#107)

Signed-off-by: Shiva Krishna, Merla <smerla@nvidia.com>

Author: shivamerla

internal/nimparser/nimparser.go

@@ -25,6 +25,11 @@ import (
 	"gopkg.in/yaml.v2"
 )
 
+const (
+	// BackendTypeTensorRT indicates tensortt backend
+	BackendTypeTensorRT = "tensorrt"
+)
+
 // File represents the model files
 type File struct {
 	Name string `yaml:"name" json:"name,omitempty"`
@@ -152,11 +157,17 @@ func MatchProfiles(modelSpec appsv1alpha1.ModelSpec, manifest NIMManifest, disco
 			continue
 		}
 
-		// GPU matching logic
-		if len(modelSpec.GPUs) > 0 || len(discoveredGPUs) > 0 {
-			if !matchGPUProfile(modelSpec, profile, discoveredGPUs) {
+		// Perform GPU match only when optimized engine is selected or GPU filters are provided
+		if isOptimizedEngine(modelSpec.Engine) || len(modelSpec.GPUs) > 0 {
+			// Skip non optimized profiles
+			if !isOptimizedEngine(backend) {
 				continue
 			}
+			if len(modelSpec.GPUs) > 0 || len(discoveredGPUs) > 0 {
+				if !matchGPUProfile(modelSpec, profile, discoveredGPUs) {
+					continue
+				}
+			}
 		}
 
 		// Profile matched the given model parameters, add hash to the selected profiles
@@ -166,6 +177,10 @@ func MatchProfiles(modelSpec appsv1alpha1.ModelSpec, manifest NIMManifest, disco
 	return selectedProfiles, nil
 }
 
+func isOptimizedEngine(engine string) bool {
+	return engine != "" && strings.Contains(strings.ToLower(engine), BackendTypeTensorRT)
+}
+
 func matchGPUProfile(modelSpec appsv1alpha1.ModelSpec, profile NIMProfile, discoveredGPUs []string) bool {
 	foundGPU := false