On Wed, 2003-09-03 at 11:05, Gary Hennigan wrote: > Eicke <[EMAIL PROTECTED]> writes: > > I have a machine with 6Gb of memory. I installed the last version of Debian > > and linux kernel 2.4.21. > > I am trying to run the cap3 (ELF 32-bit LSB executable, Intel 80386, version > > 1 (SYSV), dynamically linked (uses shared libs), not stripped), but the > > following error occurs: > > Ran out of memory: -874931512 bytes requested > > I monitored and when the software reach 1.9 Gb the error occours. > > Then I test another application all_align.pl (perl script text executable), > > and when the script reach 3.0 Gb the following error occours: > > out of memory > > > > In the first case I think is a software problem but in the second I guess > > there is something in Operating System or Kernel configuration. I ran as > > root and as common user in both cases. > > In general you're not going to be able to allocate more than 2GB of > RAM on a 32-bit system like the Pentium. While Intel played some > tricks with the hardware and actually implemented a 36-bit address bus > (I think it's 36 bits anyway), applications generally use 32-bit > pointers on a 32-bit CPU and they're assumed to be signed so that > limits you to 2^31 bytes of memory, or 2048MB (2GB). What the 6GB of > RAM buys you is that you could run 3 separate processes each using 2GB > of RAM and never hit your swap space, but a single application can't > use more than 2GB at a time, in general. > > There may be low-level things in the kernel that would allow you to > use more than 2GB of RAM, but I'm not familiar with them and it > certainly wouldn't be portable. > > If you need an application to have access to more than 2GB of RAM then > you need to get a 64-bit system like an Alpha, Sparc or Itanium.
I get the impression, though, that these are existing apps, that only broke after upgrade to .21. -- ----------------------------------------------------------------- Ron Johnson, Jr. [EMAIL PROTECTED] Jefferson, LA USA "Knowledge should be free for all." Harcourt Fenton Mudd, Star Trek:TOS, "I, Mudd" -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
