求助大神：Error：peak virtual memory ：146 megabytes 错误怎么回事啊！

`我在使用Quartus II 9.0 Web Edition  进行FPGA编译仿真过程中出现了一下错误，求大神帮忙解答一下。我是Win7  32未系统。不知道这个错误是怎么回事，求大神帮帮忙吧！

信息如下：
Info: *******************************************************************
Info: Running Quartus II Analysis & Synthesis
     Info: Version 9.0 Build 132 02/25/2009 SJ Web Edition
     Info: Processing started: Wed Dec 30 11:47:09 2015
Info: Command: quartus_map --read_settings_files=on --write_settings_files=off Ram_FIFO -c Ram_FIFO
Info: Found 2 design units, including 1 entities, in source file Ram_FIFO.vhd
     Info: Found design unit 1: Ram_FIFO-behavior_Ram_FIFO
     Info: Found entity 1: Ram_FIFO
Info: Elaborating entity "Ram_FIFO" for the top level hierarchy
Info: Found 1 instances of uninferred RAM logic
     Info: RAM logic "FIFORam" is uninferred due to asynchronous read logic
Info: *******************************************************************
Info: Running Quartus II Fitter
     Info: Version 9.0 Build 132 02/25/2009 SJ Web Edition
     Info: Processing started: Wed Dec 30 11:47:44 2015
Info: Command: quartus_fit --read_settings_files=off --write_settings_files=off Ram_FIFO -c Ram_FIFO
Error: Run Analysis and Synthesis (quartus_map) with top-level entity name "Ram_FIFO" before running Fitter (quartus_fit)
Error: Quartus II Fitter was unsuccessful. 1 error, 0 warnings
     Error: Peak virtual memory: 146 megabytes
     Error: Processing ended: Wed Dec 30 11:47:45 2015
     Error: Elapsed time: 00:00:01
     Error: Total CPU time (on all processors): 00:00:00
Error: Quartus II Full Compilation was unsuccessful. 3 errors, 0 warnings



主要是“Error: Peak virtual memory: 146 megabytes”这个错误是什么啊！！！没明白。。。。。求大神解救小弟啊！！都好几天了。。。。
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