[运算]问一个cst cpu并行的问题

离线springrc

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

UID ：14556

注册：2008-07-01
登录：2021-02-02
发帖：700
等级：积极交流六级

10楼发表于: 2010-05-28 17:55:30

回 8楼(hefang) 的帖子

多谢回复！
可是我最多只能仿到1600万网格左右的模型
再大了就说内存不足了
而内存也没用多少
我机器的内存是32G的
我还是怀疑软件和64位系统的兼容问题

共1条评分

hefang

rf币 +1

积极参与论坛交流，加分！

2010-05-28

离线hefang

本账号已冷冻，请勿发站内信或回帖，概不回复！

UID ：24731

注册：2009-01-19
登录：2025-05-09
发帖：9469
等级：荣誉管理员

11楼发表于: 2010-05-28 18:18:15

回 10楼(springrc) 的帖子

CST的官方FAQ：

How much memory does the transient solver need? (Faq #137)
(Last modified: 4/26/2006 )

As a rule of thumb you can expect that a model with 5 - 8 million (5e6 to 8e6) mesh points will require 2 GB of RAM. The exact memory requirement depends on many factors like volume and surface losses, dispersive materials, open boundaries, number of monitors, etc.

这个应该不相关，看看就好：

How to increase windows resources - desktop heap memory (important for many models opened and DC-postprocessing) (Faq #283)
(Last modified: 2/5/2010 )

The windows operating system has a known limitation in the so-called desktop heap memory, which e.g. allows only a certain number of opened windows application. This can be a limitation in the number of CST models, which can be simultaneously opened on one PC.

Also when activating the option "DC-Postprocessing on the solver server", which is available under windows since 2006B-SP2, an increase of the default desktop heap memory is recommended.

The Desktop Heap memory is defined and can be increased in the registry editor in the following place:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\SubSystems -> Windows

This key "Windows" contains a very long string, which should be similar to the following lines

%SystemRoot%\system32\csrss.exe
ObjectDirectory=\Windows
SharedSection=1024,3072,512
Windows=On
SubSystemType=Windows
ServerDll=basesrv,1
ServerDll=winsrv:UserServerDllInitialization,3
ServerDll=winsrv:ConServerDllInitialization,2
ProfileControl=Off MaxRequestThreads=16

In this long string the Desktop heap memory is defined under: "SharedSection=1024,3072,512" (third value is not always present).

On a 32bit system we recommend to change the SharedSection values into:   SharedSection=1024,4096,2048

On a 64bit system we recommend to change the SharedSection values into:   SharedSection=2048,20480,2048

This applies to all variants of Windows NT versions 3.1, 3.5, 3.51, 4.0, Windows 2000, XP, 2003, Vista and Windows 7.

After changing the registry, you have to reboot your PC to activate the changes.