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Forum: Installation and Configuration
Re: Question A problem in Geant4.9.0 installation (Joy Tan)
Date: 02 Dec, 2008
From: Paul Nicholas Colin Gloster <Paul Nicholas Colin Gloster>


I tried an excerpt from the attachment in a web search engine:
|"[..]                                                                                             |
|                                                                                                  |
|    7 [main] ? (262888) c:\cgywin\bin\g++.exe: *** fatal error - couldn't allocate heap,          | 
|Win32 error 487, base 0x670000, top 0x680000, reserve_size 61440, allocsize 65536, page_const 4096|
|                                                                                                  |
|[..]"                                                                                             |

A similar problem for Cygwin (which you seem to have misspelt as cgywin) was reported on
which contains advice to see
which contains a warning re memory leaks. (The "heap" is a part of the memory.)

So, you seem to be presented with these options:
* determine which software conflicts with Cygwin and disable or uninstall the software which conflicts with Cygwin;
* do not use Cygwin;
* do not use Windows;
* do not use Geant4.

One other possibility not mentioned above is that the computer might not be giving enough memory to G++.exe. This might happen without any bugs even if the computer has enough memory. The Bourne Again SHell (BASH) (which is provided with Cygwin) provides a remarkably small fraction of available memory by default on any operating system.

With kind regards,
Colin Paul Gloster

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