I am just a root newbie, so hopefully someone can confirm this, but I think you are running into an operating system limit not a ROOT limit. I believe most (if not all) 32 bit operating systems have a file size limit of about 2 Gig. This would be true if you are using Win* or Linux O.S. BTW, does anyone use ROOT under Solaris 2.6 and above? Can ROOT be made "large file aware" under Solaris to go above the 2 Gig limit? Chris Stevens William Love wrote: > > Rootmeisters > > I was running a program writing a root file output and it stopped > with an output file > 1999999975 Oct 5 13:28 R3452_1_lasertree.root > > Unfortunately I don't remember the error but I assume I have hit a file > size limit? I can use the file by root's automatic recovery but when I > tried to save the recovered directory I find > Error in <TKey::Create>: Cannot allocate 2833 bytes for ID = > R3452_1_lasertree.root Title = > Error in <TKey::Create>: Cannot allocate 66 bytes for ID = > R3452_1_lasertree.root Title = > > This makes it even more likely I have hit a maximum size limit in root? > > Is there any way to convince root to write larger files? > > Bill Love
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