Since this is in proc mixed, the Kronecker product variance structures are available. If you have a model that encounters an out of memory error or takes too long to run, the following suggestions may be helpful. Note that CPU Time difference and pattern is pretty consistent.Below is the mean CPU Time and its 90% C.I. The reason not all ZIPs and all states are used is simply because PROC GLIMMI blows up on the machine.
Below we show the real time of the same run as in above CPU Time figure. I suspect the problem you are encountering is related to the UNIQ_ID having many levels. If possible, use the same or nested SUBJECT= effects in all RANDOM and REPEATED statements. The following SAS code does this job:
retain procedure ;
retain realtime cputime realtime2 ;
In a collaborating environment, more CPU time also means competing for more resources. The %HPGLIMMIX SAS macro is made for large scale Hierarchical Mixed Models, and stands for High Performance GLIMMIX. Microsoft made changes to service packs 1a and 2 that relocate operating system dlls in the middle of the addressable memory. For example: proc sort; by b; run; proc mixed; class a; model y=a; random intercept / subject=b; run; Alternatively, if an equivalent model can be specified using the REPEATED statement rather
Type:Problem NotePriority:highTopic:System Administration ==> PerformanceDate Modified:2005-08-29 14:19:04Date Created:2005-04-21 11:10:04 This content is presented in an iframe, which your browser does not support. Below we show the real time of the same run as in above CPU Time figure.Note that CPU Time difference and pattern is pretty consistent.Below is the mean CPU Time and In fact, more often than not, the modeler will encounter situation where PROC GLIMMIX reports in log:ERROR: Integer overflow on computing amount of memory required.NOTE: The SAS System stopped processing this Nominate blog additions by emailing the blog address to [email protected] Search Search for: Subscribe via Email Enter your email address to subscribe to this blog and receive notifications of new posts
In a strictly nested hierarchical model, however, the variance covariance matrix is very sparse, and taking advantage of this property can accelerate computing by many folds. Error: The Sas System Stopped Processing This Step Because Of Insufficient Memory. A macro wraps them together:
proc printto log='c:\testlog.txt';run;
%let t0=%sysfunc(datetime(), datetime.);
%let procnames=GLM REG GLMSELECT ORTHOREG MIXED GLIMMIX GENMOD ;
This Site proc mixed; class a b; model y=a; random b; run; Below are some alternative specifications of the model which are statistically equivalent but numerically more efficient.
In a later test using only random effects, HPMIXED used 5.7 seconds while lmer used 11.3 second. Because lme4 does not support sparse matrix techniques for fixed effect design matrix, it takes significant penalty on memory usage (12+GB vs 25MB) and computing time (244sec real time vs. 17sec Patching security vulnerability SC2016-002-136135 for versions 7.2 and above Multiple transparent circles using only css (cutouts) What are the advantages of doing accounting on your personal finances? As an example, a sample data using Gamma Regression is shown below, with all ZIPs in AK, AL, AR, AZ with 2-level hierarchies: State and ZIP within State, total 4 blocks
I have two dependent variables (DV). This Site Thank you for your time! Proc Hpmixed Choosing options that can affect efficiency The DDFM= option on the MODEL statement specifies the estimation method for the denominator degrees of freedom, some of which can be resource intensive. I certainly dare not to test against a case with 2 million levels of random effects and would assume it will be a LONG LONG TIME.
My AccountSearchMapsYouTubePlayGmailDriveCalendarGoogle+TranslatePhotosMoreShoppingDocsBooksBloggerContactsHangoutsEven more from GoogleSign inHidden fieldsSearch for groups or messages comp.soft-sys.sas Discussion: Out of Memory in PROC MIXED (too old to reply) Jun Xu 2003-07-02 20:14:42 UTC PermalinkRaw Message Anyone Would really appreciate if someone could help me with changing the memsize to max or something bigger than 2gb. Therefore I borrowed Tianlin Wang's simulated data example in his paper: All the Cows in Canada: Massive Mixed Modeling with the HPMIXED procedure in SAS 9.2. Browse other questions tagged memory memory-management sas or ask your own question.
When is it a good idea to make Con the dump stat? Here's how you set it: Syntax for System Options in the SAS Invocation or SAS Configuration File: When running:sas.exe -memsize 4G Or by putting -memsize 4G in your sasv9.cfg (there's a Is it a successive time variable? Email Address Archives Archives Select Month December 2016 November 2016 October 2016 September 2016 August 2016 July 2016 June 2016 May 2016 April 2016 March 2016 February 2016 January 2016 December
Message 6 of 6 (104 Views) Reply 0 Likes « Message Listing « Previous Topic Next Topic » Post a Question Discussion Stats 5 replies 12-12-2012 07:54 PM 348 views 3 Steam Download on one machine, play on another machine using the same steam account How could I have modern computers without GUIs? The lmer function is called within SAS using the %RScript and %CallR macros (see here).Left panel shows the status of the machine running lmer function on the mixed model and the
As an example, a sample data using Gamma Regression is shown below, with all ZIPs in AK, AL, AR, AZ with 2-level hierarchies: State and ZIP within State, total 4 blocks Surprisingly, REG is slower than both GLM and GLMSELECT even though it utilized multi-threading technique while GLMSELECT does not: ************ Partial LOG of the last iteration ******** NOTE: PROCEDURE REG used HPMIXED uses sparse matrix techniques and will be put into great disadvantage in this comparison using large dense matrices. What happens (especially to the R part of the Z matrix) if you shift to:repeated med qtr/[email protected] subject=enrolid;This structure is presented in the documentation for the REPEATED statement, with an example
In a case where BY-processing is used, GLMSELECT will use multi-threading as specified in PERFORMANCE statement, and the gap in real time between REG and GLMSELECT will be eliminated. NOTE: The SAS System stopped processing this step because of insufficient memory. I have approximately 6000 subjects and 80000 rows or 40000 for each DV. of 100 runs using REG /GLM /GLMSELECT on different size of problems. 18 Aug Benchmark Regression Procedures using OLS Regression Author: Liang Xie | Category: PROC GENDMO, PROC GLIMMIX, PROC GLMSELECT,
Word for nemesis that does not refer to a person Should a country name in a country selection list be the country's local name? Communities General SAS Programming Register · Sign In · Help Join Now CommunityCategoryBoardLibraryUsers turn on suggestions Auto-suggest helps you quickly narrow down Multiple subject variables are often encountered in hierarchical linear models (HLMs). NOTE: PROCEDURE GLMSELECT used (Total process time): real time 3.50 seconds cpu time 3.44 seconds We see that REG has lower real time comparing to GLM/GLMSELECT, even though
In particular: The TYPE=UN option in the REPEATED statement in PROC MIXED or the RANDOM _RESIDUAL_ statement in PROC GLIMMIX may not be appropriate if subjects have many repeated measurements. Your cache administrator is webmaster. If it is a numeric variable you may sort your data set prior to using PROC GLIMMIX and remove it from the CLASS statement.