title: Peak virtual memory: 537 megabytes error in quartus ii
body: <p>I wrote the following code within Quartus II version 14.1:</p>
  
  <pre><code>LIBRARY ieee ;
  USE ieee.std_logic_1164.all ;
  ENTITY light IS
       PORT ( x1, x2 : IN STD_LOGIC ;
             f : OUT STD_LOGIC ) ;
  END light ;
  ARCHITECTURE LogicFunction OF light IS
  BEGIN
          f &lt;= (x1 AND NOT x2) OR (NOT x1 AND x2);
  END LogicFunction ;
  </code></pre>
  
  <p>but when timing simulation I got the following error:
  Peak virtual memory: 537 megabytes error in quartus ii</p>
  
  <p>Any solution??/</p>