diff --git a/learnware/specification/rkme.py b/learnware/specification/rkme.py
index 096fe2c..35cee62 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
@@ -11,16 +12,17 @@ from typing import Tuple, Any, List, Union, Dict
 
 from .base import BaseStatSpecification
 
+mkl.get_max_threads()
 
-def setup_seed(seed):
-    """
-            Fix a random seed for addressing reproducibility issues.
 
-    Parameters
-    ----------
-    seed : int
-            Random seed for torch, torch.cuda, numpy, random and cudnn libraries.
-    """
+def setup_seed(seed):
+    """Fix a random seed for addressing reproducibility issues.
+	
+	Parameters
+	----------
+	seed : int
+		Random seed for torch, torch.cuda, numpy, random and cudnn libraries.
+	"""
     torch.manual_seed(seed)
     torch.cuda.manual_seed_all(seed)
     np.random.seed(seed)
@@ -29,8 +31,7 @@ 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
     ----------
@@ -50,8 +51,7 @@ 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
     ----------
@@ -74,11 +74,10 @@ 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:
-            - min    1/2 x^T K x - C^T x
-      s.t    1^T x - 1 = 0
-                - I x <= 0
+    """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
 
     Parameters
     ----------