64bit/SMP,NUMA環境の(Iatnium) Linux開発のための実験用に開発済み。
例えば、linux-2.6.16/arch/mips/sgi-ip27/ip27-smp.c:

/*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file "COPYING" in the main directory of this
* archive for more details.
*
* Copyright (C) 2000 - 2001 by Kanoj Sarcar (xxxxx@sgi.com)
* Copyright (C) 2000 - 2001 by Silicon Graphics, Inc.
*/

IP-27は、Origin 2000/Onyx 2。自前で新しいMIPS機を作ることはもう
ないと思われ。