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From: dwm@pinocchio.Encore.COM (Dave Mitchell)
Newsgroups: comp.sys.encore
Subject: Re: Umax4.3 & NFS (& shared memory size)
Message-ID: <10396@encore.Encore.COM>
Date: 17 Nov 89 19:44:44 GMT
Article-I.D.: encore.10396
Sender: news@Encore.COM
Lines: 27

>> Does anybody know if it supports more than 64k of shared memory?
>> 
>> (Umax 4.2 had this limitation and it was the *only* reason we went
>> to Umax V; regretting it ever since)
>> 
>
>  Huh? I don't know of any such limitation on Umax4.2. I've run programs on
>Umax4.2 that used many megabytes of shared memory as far back as early 1986.
	
	The second poster's answer is alluding to the use of the
	share(2) system call - indeed there is no built in limit
	to the use of shared memory.

	But, the first poster's question is apparently asking about
	the sysV compatible shmop(2) routines.  This limit is built
	into the system configuration program, sysparam(8), and
	there is no particular reason for its (the limit's)
	existence.

	You should talk to customer service, and request a custom
	version of sysparam to work around your problem - it's
	a very simple change.

	dave

Dave Mitchell	Usenet:		...!{bu-cs,decvax,necntc,talcott}!encore!dwm
		Internet:	dwm@encore.com                   *<8-O) Yow!