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| From | Phil Schumm <pschumm@uchicago.edu> |
| To | Statalist Statalist <statalist@hsphsun2.harvard.edu> |
| Subject | Re: st: Save asarray |
| Date | Sat, 18 Jan 2014 10:28:41 -0600 |
On Jan 17, 2014, at 6:29 PM, Sergiy Radyakin <serjradyakin@gmail.com> wrote: > I am also interested in the limits of associative arrays (e.g. storing ~10mln keys of type: "2014_01_17_100_075_XYZ" and values of type double). I am fine if it takes ~300mb in size, but will it be working ok? (in my actual experiment the memory grew very fast and I had to abort the experiment when >4GB where allocated and swapping became intolerable.) I haven't tried something like this with associative arrays in Mata, so I can't really comment apart from pointing out that pre-specifying the size of the array (if you know it ahead of time) and turning off upsizing/downsizing may help. If it were I, I might be tempted to try storing the data in a MongoDB instance and accessing them through a Java plugin (via the MongoDB Java driver). Certainly that would scale well, if the access time was fast enough. -- Phil * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/