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Re: st: Cannot allocate more than 779 MB to STATA11


From   roland andersson <rolandersson@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Cannot allocate more than 779 MB to STATA11
Date   Sat, 26 Dec 2009 10:41:27 +0100

I have to make the same question again.

I have win XP 32 bit and 2 MB of memory.

With Stata9 I can allocate 1200 MB of memory but with Stata9 only 770
MB. This is a significant difference. I often needed 850-900 MB of
memory in my analyses, but can not do this with Stata11.

OK that I maybe can tweak some more memory by closing down unnecessary
processes, but that is not the point.

I think Stata should inform customers about the larger program
overhead in Stata11 that decreases the amount of memory that can be
allocated. This is a disappointment as I did not calculate that I need
to change OS to 64 bit and also order a 64 bit Stata11 in order to
make the same analyses I used to do with my old setting.

Or am I missing something?

With Stata 9 I can set memory to 1200 MB:

. set mem 1210m
op. sys. refuses to provide memory
r(909);

. set mem 1200m
(1228800k)

. memory
                                                  bytes
--------------------------------------------------------------------
Details of set memory usage
    overhead (pointers)                               0        0.00%
    data                                              0        0.00%
                                        ----------------------------
    data + overhead                                   0        0.00%
    free                                  1,258,291,192      100.00%
                                        ----------------------------
    Total allocated                       1,258,291,192      100.00%
--------------------------------------------------------------------
Other memory usage
    system overhead                             745,154
    set matsize usage                           337,600
    programs, saved results, etc.                   105
                                        ---------------
    Total                                     1,082,859
-------------------------------------------------------
Grand total                               1,259,374,051

.
With my new Stata11 I can only allocate 790 MB of memory:

. set mem 780m
op. sys. refuses to provide memory
r(909);

. set mem 770m
(788480k)

. memory
                                                  bytes
--------------------------------------------------------------------
Details of set memory usage
    overhead (pointers)                               0        0.00%
    data                                              0        0.00%
                                        ----------------------------
    data + overhead                                   0        0.00%
    free                                    807,403,512      100.00%
                                        ----------------------------
    Total allocated                         807,403,512      100.00%
--------------------------------------------------------------------
Other memory usage
    system overhead                           1,600,258
    set matsize usage                         1,315,200
    programs, saved results, etc.                   105
                                        ---------------
    Total                                     2,915,563
-------------------------------------------------------
Grand total                                 810,319,075


Roland Andersson


2009/12/25 Robert A Yaffee <bob.yaffee@nyu.edu>:
> Neil,
>   I'm running a quad core 64bit laptop with 8GB of ram and was able to
> set mem at 7G without any difficulty.
>   - Bob
>
> Robert A. Yaffee, Ph.D.
> Research Professor
> Silver School of Social Work
> New York University
>
> Biosketch: http://homepages.nyu.edu/~ray1/Biosketch2009.pdf
>
> CV:  http://homepages.nyu.edu/~ray1/vita.pdf
>
> ----- Original Message -----
> From: Neil Shephard <nshephard@gmail.com>
> Date: Thursday, December 24, 2009 7:28 am
> Subject: Re: st: Cannot allocate more than 779 MB to STATA11
> To: statalist@hsphsun2.harvard.edu
>
>
>> On Thu, Dec 24, 2009 at 10:53 AM, roland andersson
>>  <rolandersson@gmail.com> wrote:
>>  > That does not explain the difference between STATA9 and STATA11. I
>>  > often use 850MB is STATA9 and I assume without using virtual memory,
>>  > but STATA11 just refuse to allocate memory.
>>  >
>>  > Has STATA11 larger overhead?
>>
>>  No idea, why not check this yourself?  I believe under M$-Windows you
>>  can find this out by Ctrl+Alt+Del and then selecting to see active
>>  processes (or something similar, can't remember and not on M$-Windows
>>  at present).
>>
>>  BTW its Stata not STATA (see
>>  http://www.stata.com/support/faqs/res/statalist.html#spell)
>>
>>  Neil
>>
>>  --
>>  "I've got a perfect body, 'cause my eyelashes catch my sweat" -
>>  'Folding Chair' Regina Spektor
>>
>>  Email - nshephard@gmail.com
>>  Website - http://slack.ser.man.ac.uk/
>>  Photos - http://www.flickr.com/photos/slackline/
>>  *
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>>
> *
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