在用ISE布线时遇到的out of memory问题的解决办法

yinhaoqiong

我们公司用的Virtex IV LX160芯片，SLICE资源用了70％多，在route时，ISE提示如下错误：ERROR: Portability:3 This Xilinx application has run out of memory or has encountered a memory conflict..."。试了很多机器，包括服务器，都有同样的问题。一开始怀疑是我们的代码有问题，找了半天，没有发现问题。后来到xilinx网站上找了半天，终于发现了问题的症结所在。把他公布出来，希望大家遇到类似问题时，不再走弯路。
1、LX160在SLICE使用率超过50％时，route时会使用超过2G的内存，而Windows操作系统默认情况下，只能使用2G内存（不管你装了多少内存条或开了多少虚拟内存），因此会出现内存不足的情况；
2、通过修改windows的boot.ini文件，可将系统可用内存扩展到3G。

详情参见Xilinx AR #14932：http://www.xilinx.com/support/answers/14932.htm；
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[ 本帖最后由 yinhaoqiong 于 2008-12-10 14:54 编辑 ]

yinhaoqiong

自己顶一下。难道论坛里没有人用virtex IV系列的大容量片子吗？

zgq800712

如何编辑BOOT.INI文件，这个论坛回复不能全英文

9 F# ?; ?$ B, v# @6 V, XThis article describes how to view and manually configure the Boot.ini file in Windows XP from within the Startup and Recovery dialog.
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In Windows XP, you can quickly and easily locate the Boot.ini to verify and/or edit the file.

It is suggested to backup the Boot.ini file before editing. The first tasks will involve modifying folder option so as to view hidden files and then backing up the Boot.ini file.



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Save a Backup Copy of Boot.ini

• Right-click My Computer, and then click Properties. -or-
  Click Start, click Run, type sysdm.cpl, and then click OK.
• On the Advanced tab, click Settings under Startup and Recovery.
• Under System Startup, click Edit. This opens the file in Notepad ready for editing.
• In Notepad, click File on the Menu bar, and then click Save As.
• Right click in an empty area of the Save As dialog box, point to New in the context menu, and then click Folder.
• Type a name for the new folder, for example temp, and then press the ENTER key to create the folder named temp.
• Double-click the new folder named temp, and then click the Save button to save a backup copy of the Boot.ini file.

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Edit the Boot.ini FileTo view and edit the Boot.ini file:

• Right-click My Computer, and then click Properties. -or-
  & r9 q) g" c4 D) K4 kClick Start, click Run, type sysdm.cpl, and then click OK.
• On the Advanced tab, click Settings under Startup and Recovery.
• Under System Startup, click Edit.

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Sample Boot.ini FileThis is a sample of a default Boot.ini file from a Windows XP Professional computer. [boot loader]
& i- h. @4 q! g+ X8 rtimeout=30
; X/ E' v- u. L4 adefault=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
8 A& i' c% ^$ Qmulti(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect
This is a sample of the above Boot.ini file with a previous installation of Windows 2000 on a separate partition. [boot loader]
9 i" {9 r/ w& Y$ i( _timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
/ U& P0 u! J0 T5 _& G4 |[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows XP Professional" /fastdetect
multi(0)disk(0)rdisk(0)partition(2)\WINNT="Windows 2000 Professional" /fastdetect


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( o1 H# b9 X8 R9 a* I) J2 \7 B) ?" YModifying the Boot.iniWhile you can modify the Boot.ini file using the Startup and Recovery dialog, where you can select the default operating system, change the timeout value, or manually edit the file, the following method uses the command line utility, Bootcfg.exe.
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Note The Bootcfg.exe utility is only available in Windows XP Professional. This utility is not available in Microsoft Windows XP Home Edition. Therefore, this section does not apply to Windows XP Home Edition.

• Click Start, and then click Run.
• In the Open text box, type cmd.
• At the command prompt, type bootcfg /?.
• The help and parameters for BOOTCFG.exe will display.

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1 }% h6 r6 t( c3 j' y- b1 zAdding an Operating SystemAt the command prompt, type: bootcfg /copy /d Operating System Description /ID#
+ _. h, [) C4 J& mWhere Operating System Description is a text description (e.g. Windows XP Home Edition), and where # specifies the boot entry ID in the operating systems section of the BOOT.INI file from which the copy has to be made.
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Removing an Operating SystemAt the command prompt, type: bootcfg /delete /ID#
Where # specifies the boot entry ID that you want to be deleted from the operating systems section of the BOOT.INI file (e.g. 2 for the second Operating system that is listed.



Setting the Default Operating SystemAt the command prompt, type: bootcfg /default /ID#
Where # specifies the boot entry id in the operating systems section of the BOOT.INI file to be made the default operating system.
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Setting the Time OutAt the command prompt, type: bootcfg /timeout# Where # specifies the time in seconds after which default operating system will be loaded.


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: M/ e% ^, f: R, OOpen the Boot.ini File to Verify Changes

• Right-click My Computer, and then click Properties. -or-
  " T* A3 ?0 l" \3 e1 S' b0 CClick Start, click Run, type sysdm.cpl, and then click OK.
• On the Advanced tab, click Settings under Startup and Recovery.
• Under System Startup, click Edit.

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bugs

这个论坛回复不能全英文，我也不喜欢这点。

Windows XP SP2已经支持３Ｇ内存了。

wide_road

32位系统应该可以支持4GB内存的。可能是针对1个进程分配的内存不够吧。
' e! f9 U7 O  ^( C; M( D0 r: ~谢谢楼主分享的经验

cary_wang

wide_road 发表于 2013-7-4 12:41
32位系统应该可以支持4GB内存的。可能是针对1个进程分配的内存不够吧。
( `1 y0 t5 o) B6 D" U- Q, L谢谢楼主分享的经验

Windows 32Bit 系统最大能识别到3.25GB内存。（win系统最大支持128G）可以通过破解PAE来支持更大的内存，如使用网上流行的4GBReady等软件实现。但是不是很稳定，最好的方法是安装64位系统实现对大内存的支持。但是，有一个方面一定要注意，现在的32位应用程序是不能在默认状态下使用2GB以上的内存的。也就是说，如果系统没有经过特殊配置，系统有再大的内存，应用程序是没有办法使用到的。