关于OPNET的memory usage

各路OPNET大神，小弟现在在做一个基于OPNET的交换机网络仿真，规模比较大（5000个终端左右），在全网ftp流量80M左右的时候，仿真到6分钟左右就出现了如下错误：
|-----------------------------------------------------------------------------|
| <<< Recoverable Error >>>                                                   |
| Request to allocate (76928 bytes) of Prg memory failed.                     |
| T (368.626), EV (608340018), MOD (top.server3.tcp)                          |
|-----------------------------------------------------------------------------|
|-----------------------------------------------------------------------------|
| <<< Recoverable Error >>>                                                   |
| Allocation of memory failed; request = 76936 bytes                          |
| T (368.626), EV (608340018), MOD (top.server3.tcp)                          |
|-----------------------------------------------------------------------------|
|-----------------------------------------------------------------------------|
| <<< Recoverable Error >>>                                                   |
| Request to allocate (76928 bytes) of Prg memory failed.                     |
| T (368.626), EV (608340018), MOD (top.server3.tcp)                          |
|-----------------------------------------------------------------------------|
<<< Program Fault >>>
  * Time:      20:41:54 Mon May 05 2014
  * Product:   modeler (32-bit)
  * Package:   process (tcp_manager_v3) at module (top.server3.tcp)
  * Function:  Vos_Copy_Memory
  * Error:     program abort -- Invalid Memory Access
               T (368.626), EV (608340018), MOD (top.server3.tcp), KP (op_intrpt_force_remote)
|-----------------------------------------------------------------------------|
| <<< Program Fault >>>                                                       |
| program abort -- Invalid Memory Access                                      |
| T (368.626), EV (608340018), MOD (top.server3.tcp), KP (op_intrpt_force_remote) |
|-----------------------------------------------------------------------------|
我感觉可能是内存分配出了问题，但我这台机子物理内存有32G，一直到报错点也不过占用了4个G。。。
求解啊！

估计是访问越界了，检查下链表长度