You don't HAVE to, but the optimal configuration is to have one interpreter per CPU, yes. So if you start an instance, you should bind it to a specific CPU. It'll work fine even if you don't do it, but performance won't be optimal. I've moved away from multi-cpu machine for my Zope because of this, makes things much easier. J.F. -----Original Message----- From: zope-bounces@zope.org [mailto:zope-bounces@zope.org] On Behalf Of Fernando Lujan Sent: March 11, 2005 3:21 PM To: zope@zope.org Subject: [Zope] SMP and Zope. Folks, A guy told me that to use FULL SMP with Zope, I must make a Zope instance for each processor. Is this information correct? I already install ZEO on this machine, but to instance multiple Zope I need to change the ports do 8081, 8082 and so on... I didn't fully trust this guy opnion, anyway I want to confirm it. Thanks in advance. Fernando Lujan _______________________________________________ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )