RE: Re: NUMCPU >1 = IEE331A EXCESSIVE DISABLED SPIN LOOP DETECTED

> -----Original Message-----
> From: [email protected] 
> [mailto:[email protected]] On Behalf Of Gerhard Postpischil
> Sent: 23 May 2010 08:38
> To: [email protected]
> Subject: Re: [turnkey-mvs] Re: NUMCPU >1 = IEE331A EXCESSIVE 
> DISABLED SPIN LOOP DETECTED
> 
> 
> On 5/20/2010 12:25 PM, Mike Stramba wrote:
> > ...Except for  the  the "spin" messages, it was spewing, 
> which I had 
> > no idea what they meant ;)
> 
> Several years ago I tried NUMCPU 2 (for a 4381), and got weird 
> hangs and wait states. I tried it earlier today, and it works 
> like a charm - no spin loops. Perhaps the "secret" is to attach 
> devices only to CPU 0, as was the case for real 43x1 machines 
> (support for multiple I/O processors came in with MVS/XA).

We had a real 4381 and I am sure it had devices on both channel sets. I
think the trick was they had to match...

> 
> Gerhard Postpischil
> Bradford, VT
>