C++ memory limit ?

[scavenger]

I am unable to allocate more than 2.4G of memory for a C++ program
though I have aprox. 4G of physical memory. I am using g++ on a RH9
box.

thanks,

 

[Simon G Best]

I am unable to allocate more than 2.4G of memory for a C++ program
though I have aprox. 4G of physical memory. I am using g++ on a RH9
box.

thanks,

You're welcome.

 

[Larry Smith]

You're welcome.

Ask in a Linux newsgroup.

Memory allocation details are Operating System specific.

Most Unix/Linux systems have a per-process memory allocation
limit to prevent a single program from using all of the
resources (thereby starving other running programs).

 

[ana.7.non]

I am unable to allocate more than 2.4G of memory for a C++ program
though I have aprox. 4G of physical memory. I am using g++ on a RH9
box.

thanks,

 

[=?iso-8859-1?q?Erik_Wikstr=F6m?=]

I am unable to allocate more than 2.4G of memory for a C++ program
though I have aprox. 4G of physical memory. I am using g++ on a RH9
box.

As others have pointed out, this is platform-dependent but 2.9 seems
about right. Most Linuxes split the address-space into 1GB for kernel
and 3GB for the app, Windows usually split it 2/2GB. Notice that those
3GB is the total amount available to the app not how much you can
allocate, some of it goes to storing the actual application and such.