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st: How to deal with r(909) "op. sys. refuses to provide memory"??? xtgls


From   Murod Aliyev <ma.statalist@yahoo.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: How to deal with r(909) "op. sys. refuses to provide memory"??? xtgls
Date   Sun, 9 Dec 2012 10:28:10 +0000 (GMT)

Dear All

I have read a lot of threads on this issue, but still can not resolve my problem:

I am trying to run FGLS (xtgls) with 49,000 observations, 8 years unbalanced panel with around 7,500 groups, 26 varibles in the model.
After first trying xtgls I get a message saying "matsize too small - should be at least 7369". So, I set matsize to 8000, then I get a message r(909) "op. sys. refuses to provide memory". Could you please help me understand what is causing the problem here, and how to reslve it? I presume it is not related to the number of observations or variables, but rather caused by the way FGLS works.

Resources in use:

- 32 bit Windows 7
- RAM 4g
- Stata/SE 12.1
- Stata "About" shows Available Physical Memory 1,945,452 KB
- max_memory set to .

Memory report is as follows:

. memory
 Memory usage
                                           used                allocated
 ---------------------------------------------------------------------
 data (incl. buffers)              35,809,764               67,108,864
 var. names, %fmts, ...                32,668                   52,140
 overhead                           1,064,972                1,065,172
 Stata matrices                             0                        0
 ado-files                            114,691                  114,691
 saved results                         65,115                   65,115
 Mata matrices                         34,884                   34,884
 Mata functions                        14,040                   14,040
 set maxvar usage                   1,391,728                1,391,728
 other                                  2,687                    2,687
 ---------------------------------------------------------------------
 total                             38,449,909               69,849,321


Thanks in advance!

Best wshes,
Murod        


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