Newsgroups: comp.parallel.pvm
From: sssfagg@reading.ac.uk (Graham Edward Fagg)
Subject: Re: Problems with v3.3.4 on SUNMP
Keywords: SUNMP, PVM version 3.3.4
Organization: University of Reading
Date: Fri, 30 Sep 1994 10:26:11 GMT
Message-ID: <sssfagg.780920771@reading>

knut@bragi.uni-paderborn.de (Knut Menzel) writes:

>In article <3697f7$8df@usenet.srv.cis.pitt.edu>, dweeks@holmes.hgen.pitt.edu (Daniel E. Weeks) writes:
>>> Can anyone help me with this?  Thank you.
<snip>
>>>      When I run the master1 example program, it gives 
>>>      the following error message when I ask to spawn
>>>      too many slaves:
>>> libpvm [t40006]: peer_conn() shmat to t40008: Too many open files

>You can manage it it increasing the maxusers entry in the file
>/etc/system. Try 
>	
>	set maxusers=64

>Be aware, use usable settings of the number and size of memory
>segments (e. g. shmseg: 200, shmmax: 8388608=8MB).

>Best wishes,
>-- Knut

It could also be due to more general limits placed on user processes by the
shell itself.
Try 	
			unlimit
followed by 
			limit coredumpsize 8k 
for example. This will give you more file descripters as the problem may not
be due to shared memory in the first place.

Graham.
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