unknown warning message using LES in Fluent

Jim

Hello forum users,

I'm doing a LES simulation around a 6:1 prolate spheroid (L=1.37m, Re=4.2*10^6) with adapted unstructured mesh of about 675,000 cells (adapted: structured surface and bound layer, then Tet/Tgrid in outer domain). I've run the simulation previously on an about 500,000 cells domain fine (same configuration). In the new case, however, when starting iterating I get a warning message which I never experienced before. It goes as follows:

ST _Malloc: out of memory.malloc _storage: unable to malloc LES RFG Diagonal Matrix , size 48582072 , t 2, myid 1000000

The message comes up at every iteration continuously.

If any of you have witnessed similar message, please let me know what's it all about. Thank you in advance for your help!

Jim