電腦內存原來是8g，后來加裝了8g的內存條，網格劃分的數量跟加裝內存條前差不多，也就15萬網格，為什么求解時老是出現下面的問題，上網查了很久，都沒查到原因，求大神解救。

問題如下：

*** WARNING ***                         CP =      55.141   TIME= 21:45:50
 The Distributed Sparse Matrix Solver is currently running in the       
 out-of-core memory mode.  This memory mode may provide significantly   
 worse performance compared to the in-core memory mode, depending on    
 the amount of available system memory and I/O speed.  Please monitor   
 the solver performance to ensure that the large amount of I/O to the   
 solver files does not create a bottleneck for performance.             

 *** ERROR ***                           CP =      98.562   TIME= 21:46:41
 An input/output error has occurred while trying to open a file with    
 length = 3 GB.  Error code = 112, which translates to: 磁盤空間不足。  
                                                                        

 *** ERROR ***                           CP =      98.562   TIME= 21:46:41
 The program is unable to open file file1.DSPtri.  If the suggestions in
 the associated error messages immediately preceding and/or following   
 this error message do not help resolve the file issue, please send the 
 data leading to this operation to your technical support provider,     
 along with the I/O error code of -1 and the system error code of 0,    
 for help in determining the possible reasons as to why this file could 
 not be opened.                                                         

 *** ERROR ***                           CP =      98.562   TIME= 21:46:41
 An input/output error has occurred on the process with MPI Rank ID = 1.
  This error occurs when trying to open a file with length = 4 GB.      
 Please check to make sure there is enough free disk space in the       
 working directory (E:\zuijin\anli\_ProjectScratch\Scr5288) on machine  
 (DESKTOP-J2BGQ1T).