Subject: Re: How to run 2 Instances of SETI@home (Windows CLI) on Hyperthreading CPUs
From: "Alex Nones" <anon@home>
Date: 11/05/2004, 07:24
Newsgroups: alt.sci.seti

Thanks for the Info about SETI Driver..
Downloaded it and its an elegant way of doing things.

Alex.


"Michael D. Ober" <obermd.@.alum.mit.edu.nospam> wrote in message 
news:afCnc.14019$V97.7338@newsread1.news.pas.earthlink.net...

"f/f george" <george@yourplace.com> wrote in message
news:d1qt90d7m9qnr6vkm4pvam3483ppse496o@4ax.com...
On Sun, 9 May 2004 23:58:25 +0100, "Alex" <anon@home> wrote:

If you've got Windows XP, and a Hyperthreading CPU (eg. a newish Pentium
4),
create 2 SETI folders for 2 SETI clients.

Create shortcuts for the Clients. and if you want, put the shortcuts 
into
the "Startup Iems" on the Windows start Menu.

You can run both clients Simultaneously! :)

The CPU usage is now 100%  instead of 50%!!.

[figured out by Alex Nones. (sometime in April, 2004AD)].

Or......just use SetiDriver and increase the number of "maximum
processes" to 2 or 4 if you have a HT dualie.
You MUST also change the "desired cache size" to at least 2.
Changing the number to at least double the number actually being
processed is best. On rare occassions both units could finish at the
same time and cause a lock-up of the computer.


Huh?  How can multiple WUs finishing simultaneously cause a PC to lock up?
At worst, the system will have to wait for a WU to download.  Also, when
SETI Driver is first run, it asks Windows how many processors and puts 
that
value in the Maximum Processes field.  On a HT processor, do NOT use the 
the
Processor Affinity option, as this will cause performance problems.

Mike.