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From |
Stas Kolenikov <skolenik@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Best machine to build for running STATA |

Date |
Mon, 22 Feb 2010 19:02:44 -0600 |

On Mon, Feb 22, 2010 at 6:50 PM, Dana Chandler <dchandler@gmail.com> wrote: > Re: Memory allocation... Christopher Baum mentions that for a 13 GB > data set, 24GB of RAM would be recommended. Are there any rules of > thumb people use in terms of how much memory a system should have to > comfortably do analysis on a dataset of a given size? Also, how much > memory should be allocated to a dataset. If you have a 250mb dataset, > is allocating 1gig overkill, can this be harmful? > It was not Kit, it was me. I thought that for a 13Gb data set, 16Gb won't be enough (if you give Windows 1-2Gb), and 24Gb seemed like the next "nice" number. Most Stata commands and data sets have a certain overhead, and for more complicated commands, you would want to have 30-50% additional memory (assuming your data set is already efficient: if you work with 20 variables out of 1000, you may not notice these overheads). Whether allocating extra memory is harmful or not very much depends on the memory management habits of your OS. Windows Task Manager shows the amount of memory actually used by the software, and when I set memory 200m use [data set of 10m] it only shows the actual amount of 10Mb or so used by Stata. Personally, most of my work in Stata are simulations, plus some -gllamm- estimation that takes quite a bit of time. So I can advocate Stata MP, but I am not entirely qualified to judge the fine details of hardware requirements for handling large data sets and specific architectures that would supposedly work better. -- Stas Kolenikov, also found at http://stas.kolenikov.name Small print: I use this email account for mailing lists only. * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: Best machine to build for running STATA***From:*Dana Chandler <dchandler@gmail.com>

**Re: st: Best machine to build for running STATA***From:*Michael Norman Mitchell <Michael.Norman.Mitchell@gmail.com>

**Re: st: Best machine to build for running STATA***From:*Dana Chandler <dchandler@gmail.com>

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