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Article #86

Limit to Shared Memory?

#86
From: William Hsu
Date: Tue, 08 Sep 1992 21:22
21 lines
1389 bytes
I have a problem with shared memory when reading in large datasets. For instance,
I have a 256^3 byte dataset that I read into a field. I get an error msg like the
following:
/udir/gudrun/avs/EDI2/read_volume: can't put field in shared memory: shmget: Invalid argument

It then goes and copies data from mod to mod. Bad.
Looking in the dev. man. it says that some platforms may have restrictions, and
to look in the release notes. But, I didn;t see any such restriction in the 
release notes for AVS on DECstations.  I have a DECstation 5000, and my shared
memory parameters (smseg and smmax) are double what AVS installation recommends.
Can someone tell me why I get this error, and is there anyway for it to use
shared mem for datasets this large?

Thanks,
William
-- 
=============================================================================
William Hsu				Watch out for those 18-wheelers....
Digital Equipment Corporation
hsu@crl.dec.com
=============================================================================
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Message-ID: <1992Sep8.212248.13046@crl.dec.com>
Path: arc1-ca.pugleaf.net!sparky!uunet!decwrl!deccrl!news.crl.dec.com!hsu

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Newsgroups: comp.graphics.avs
Path: arc1-ca.pugleaf.net!sparky!uunet!decwrl!deccrl!news.crl.dec.com!hsu
From: hsu@crl.dec.com (William Hsu)
Subject: Limit to Shared Memory?
Message-ID: <1992Sep8.212248.13046@crl.dec.com>
Sender: news@crl.dec.com (USENET News System)
Organization: DEC Cambridge Research Lab
Date: Tue, 8 Sep 1992 21:22:48 GMT
Lines: 21