diff --git a/learnware/specification/rkme.py b/learnware/specification/rkme.py
index 33440b9..1f5869e 100644
--- a/learnware/specification/rkme.py
+++ b/learnware/specification/rkme.py
@@ -1,4 +1,5 @@
 import os
+import mkl
 import copy
 import torch
 import faiss
@@ -11,14 +12,15 @@ from typing import Tuple, Any, List, Union, Dict
 
 from .base import BaseStatSpecification
 
+mkl.get_max_threads()
+
 
 class RKMESpecification:
     pass
 
 
 def setup_seed(seed):
-    """
-		Fix a random seed for addressing reproducibility issues.
+    """Fix a random seed for addressing reproducibility issues.
 	
 	Parameters
 	----------
@@ -33,8 +35,7 @@ def setup_seed(seed):
 
 
 def choose_device(cuda_idx=-1):
-    """
-		Let users choose compuational device between CPU or GPU.
+    """Let users choose compuational device between CPU or GPU.
 
 	Parameters
 	----------
@@ -54,8 +55,7 @@ def choose_device(cuda_idx=-1):
 
 
 def torch_rbf_kernel(x1, x2, gamma) -> torch.Tensor:
-    """
-		Use pytorch to compute rbf_kernel function at faster speed.
+    """Use pytorch to compute rbf_kernel function at faster speed.
 
 	Parameters
 	----------
@@ -78,8 +78,7 @@ def torch_rbf_kernel(x1, x2, gamma) -> torch.Tensor:
 
 
 def solve_qp(K: np.ndarray, C: np.ndarray):
-    """
-		Solver for the following quadratic programming(QP) problem:
+    """Solver for the following quadratic programming(QP) problem:
 		- min    1/2 x^T K x - C^T x
     	  s.t    1^T x - 1 = 0
                     - I x <= 0