SGI is currently developing an x86_64 system with more than 16TB of memory per SSI. As far as I can tell, this should be supported. The relevant definitions such as MAX_PHYSMEM_BITS appear ok. One area of concern is page counts. Exceeding 16TB will also exceed MAX_INT page frames. The kernel (at least in all places I've found) keep pagecounts in longs. Have I missed anything? Should this > 16TB work? Are there any kernel problems or problems with user tools that anyone knows of. Any help or pointers to potential problem areas would be appreciated... --- Jack Steiner (steiner@xxxxxxx) SGI - Silicon Graphics, Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html