Is the normal stack size for a thread still 8MB? Most of my c++ has always been simulation or signal processing where a buffer of objects to be simulated or sam

Is the normal stack size for a thread still 8MB? Most of my c++ has always been simulation or signal processing where a buffer of objects to be simulated or samples/pixels to be processed always exceed sane stack sizes. The standard answer is to preallocate these buffers and reuse them. Smart pointers are pretty useful in the simulation case, but not really necessary for the signal processing.