Resource limits

From: <Andrew.Raine_at_mrc-dunn.cam.ac.uk>
Date: Thu, 19 Jul 2001 09:20:15 +0100 (BST)

Dear Managers,

My 4-processor ES40 has 4GB of real memory (and some swap). I have a
user who needs to run some vary large programs, but I can't work out
how to let him use more than a gigabyte of the available total for a
single process.

Using the built-in limit in tcsh:

beta % limit datasize unlimited
beta % limit stacksize unlimited
beta % limit memoryuse unlimited
beta % limit vmemoryuse unlimited

But then:

beta % limit
cputime unlimited
filesize unlimited
datasize 1048576 kbytes
stacksize 32768 kbytes
coredumpsize unlimited
memoryuse 4097016 kbytes
vmemoryuse 4194304 kbytes
descriptors 4096

or even:

beta % ulimit -a
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) 1048576
stack(kbytes) 32768
memory(kbytes) 4097016
coredump(blocks) unlimited
nofiles(descriptors) 4096
vmemory(kbytes) 4194304

Presumably these are maximum limits set somewhere system-wide. Where
are they set, and how could I change them?

Many thanks,

Andrew

--
Dr. Andrew Raine, Head of IT, MRC Dunn Human Nutrition Unit, 
Wellcome Trust/MRC Building, Hills Road, Cambridge, CB2 2XY, UK
phone: +44 (0)1223 252830   fax: +44 (0)1223 252835
web: www.mrc-dunn.cam.ac.uk email: Andrew.Raine_at_mrc-dunn.cam.ac.uk
Received on Thu Jul 19 2001 - 09:20:26 NZST

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