Date:         Sat, 8 May 2010 11:00:57 -0700
Reply-To:     Arthur Tabachneck <art297@NETSCAPE.NET>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Arthur Tabachneck <art297@NETSCAPE.NET>
Subject:      SAS insufficient memory
In-Reply-To:  <f5256b6c-dfe8-43d0-81e9-7676c3d9d284@u31g2000yqb.googlegroups.com>
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The following was posted on Google Lists:


---------- Forwarded message ----------
From: Ha Nguyen <moon...@gmail.com>
Date: Apr 18, 2:57 pm
Subject: SAS insufficient memory
To: comp.soft-sys.sas


Dear SAS users,

I am carrying out a multilevel analysis using proc mixed, SAS 9.2 on
window XP pro 64 bit, 4G ram. It's a 4 level model of 4 testing times
(level 1) of 3000 students (level 2) living in 1500 neighborhoods
(level 3) and studying in 300 school (level 4).
My sas code is:
Proc mixed data=school method=ml noclprint;
class studentid neighbourhood schoolid;
model math=time time*time/solution ddfm=bw;
random int time/ sub= schoolid type=un;
random int time/ sub= neighbourhood (schoolid) type=un;
random int time/ sub= studentid (neighbourhood) type=un;
run;

I use -memsize 0 option. Before running the analysis, I checked the
proc option group= memory and got the infor that memsize=3947950080.

However, when I ran the model, I still got the error message: "Unable
to allocate sufficient memory: a request for 1139885k bytes exceeded
the 786430k available......."

Could you please advise me any solution to this?

With thanks and best regards,
Nguyen Thu Ha
KU Leuven