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st: set memory question


From   David Airey <david.airey@vanderbilt.edu>
To   Statalist <statalist@hsphsun2.harvard.edu>
Subject   st: set memory question
Date   Tue, 25 Aug 2009 21:40:41 -0500

.

No, my virtual memory is not on (under efficiency settings below):

. query

---------------------------------------------------------------------------------
    Memory settings (also see query memory for a more complete report)
        set memory          50M
        set maxvar          5000
        set matsize         400
---------------------------------------------------------------------------------
    Output settings
        set more            on
        set rmsg            off
        set dp              period     may be period or comma
        set linesize        81         characters
        set pagesize        49         lines
        --------------------------------------------------
        set logtype         smcl       may be smcl or text
        --------------------------------------------------
        set eolchar         unix       may be mac or unix
        set notifyuser      on
        set playsnd         off
---------------------------------------------------------------------------------
    Interface settings
        set revkeyboard     on
        set varkeyboard     on
        set smoothfonts     on
        --------------------------------------------------
        set linegap         1          pixels
        set scrollbufsize   204800     characters
        set varlabelpos                (not relevant)
        set reventries      5000       lines
        --------------------------------------------------
        set maxdb           50         dialog boxes
---------------------------------------------------------------------------------
    Graphics settings
        set graphics        on
        set scheme          s1color
set printcolor automatic may be automatic, asis, gs1, gs2, gs3 set copycolor automatic may be automatic, asis, gs1, gs2, gs3
---------------------------------------------------------------------------------
    Efficiency settings
        set adosize         1000       kilobytes
        set virtual         off
---------------------------------------------------------------------------------
    Network settings
        set checksum        off
        set timeout1        120        seconds
        set timeout2        300        seconds
        --------------------------------------------------
        set httpproxy       off
        set httpproxyhost
        set httpproxyport   8080
        --------------------------------------------------
        set httpproxyauth   off
        set httpproxyuser
        set httpproxypw
---------------------------------------------------------------------------------
    Update settings
        set update_query    on
        set update_interval 7
        set update_prompt   on
---------------------------------------------------------------------------------
    Trace (programming debugging) settings
        set trace           off
        set tracedepth      32000
        set traceexpand     on
        set tracesep        on
        set traceindent     on
        set tracenumber     off
        set tracehilite
---------------------------------------------------------------------------------
    Mata settings
        set matastrict      off
        set matalnum        off
        set mataoptimize    on
        set matafavor       space      may be space or speed
        set matacache       400        kilobytes
set matalibs lmatabase;lmataado;lmataopt;lmoremata;lmoremata10;lso
> mersd;lsq;lsqbm
        set matamofirst     off
---------------------------------------------------------------------------------
    Other settings
        set type            float      may be float or double
        set level           95         percent confidence intervals
set maxiter 16000 max iterations for estimation commands
        set searchdefault   local      may be local, net, or all
        set seed            X075bcd151f123bb5159a55e50022865746ad
        set varabbrev       on
        set emptycells      keep       may be keep or drop
        set processors      2
---------------------------------------------------------------------------------




In *nix (including OS X) doesn't Stata use virtual memory
as well as RAM? I recall doing this in Solaris and Linux.





If I have 4 gb installed on StataMP 11 on OS X 10.5.8, yet

-set memory 5g-

doesn't cause an error message. Neither does -set memory 50g-.

The manuals says it should but look at this (I don't have 50 gb of memory):

. set memory 50g

Current memory allocation

current memory usage settable value description (1M = 1024k) -------------------------------------------------------------------- set maxvar 5000 max. variables allowed 2.105M set memory 51200M max. data space 51,200.000M set matsize 400 max. RHS vars in models 1.254M ----------- 51,203.359M

. memory
                                                 bytes
--------------------------------------------------------------------
Details of set memory usage
   overhead (pointers)                               0        0.00%
   data                                              0        0.00%
                                       ----------------------------
   data + overhead                                   0        0.00%
   free                                 53,687,091,200      100.00%
                                       ----------------------------
   Total allocated                      53,687,091,200      100.00%
--------------------------------------------------------------------
Other memory usage
   set maxvar usage                          2,206,954
   set matsize usage                         1,315,200
   programs, saved results, etc.                 1,994
                                       ---------------
   Total                                     3,524,148
-------------------------------------------------------
Grand total                              53,690,615,348


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