Using -xtmixed- to fit a simple random-intercept model (however
on >1million obs) I get:
_xtm_mixed_ll_uu(): 3900 unable to allocate real <tmp>[1569048,51]
_xtm_mixed_ll_u(): - function returned error
_xtm_em_iter_u(): - function returned error
_xtm_em_iter(): - function returned error
<istmt>: - function returned error
r(3900);
I understand that this means Mata ran out of memory, but I'm a bit
puzzled by the explanation of r(3900) that there is nothing I can do-
it's between Mata and the OS (xp, 4gb). Usually when Stata reports
out of memory, I know what I can do (drop variables, compress them,
allocate more). Is it the case here that my model simply requires
a certain matrix of a certain size, and Mata cannot allocate it
because of hardware limitations? Or can I find Mata some more
memory by reducing what Stata needs otherwise? Any insight appreciated.
thanks,
Jeph
--
Jeph Herrin
[email protected]
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