out of memory error
3 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I'm trying to join to large arrays (rawS=43914x11 and rawP=23772085x11). My code is
out1=cellfun(@num2str,rawS,'un',0)
out2=cellfun(@num2str,rawP,'un',0)
[idxP,idxS] = ismember(out2(:,1),out1(:,1));
out=rawS(idxS(idxP),[1,2,3,4,5,6,7,8,9,10,11]);
out(:,[12,13,14,15,16,17,18,19,20,21,22]) - rawP(idxP,[1,2,3,4,5,6,7,8,9,10,11]);
This ran just fine the first time I ran it, but runs out of memory now (seemingly at different points each time) on the second line for "out2" . No other programs or processes are running. I Tried restarting the computer of course, using tall arrays, deleting variables after they are not needed and so forth, but nothing seems to works. Short of going next to distributed arrays to parallel workers, I would appreciate greatly any ideas or suggestions. Thanks.
5 commentaires
Jan
le 29 Sep 2022
@Mark Bodner: Again, the code would be better to read, if you replace [12,13,14,15,16,17,18,19,20,21,22] by 12:22 .
Réponse acceptée
Walter Roberson
le 28 Sep 2022
Pre-allocate out to the final size. This will reduce temporary memory use. Also, using : is more memory efficient than indexing at the list of columns.
out = zeros(numel(idxP), 22);
out(:, 1:11) = rawS(idxS(idxP), :);
out(:, 12:24) = rawP(idxP, :);
0 commentaires
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Startup and Shutdown dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!