Seti@Home optimized science apps and information

Optimized Seti@Home apps => Windows => Topic started by: edwartr on 13 Aug 2007, 09:03:38 pm

Title: XEON apps?
Post by: edwartr on 13 Aug 2007, 09:03:38 pm

I have read a few of the threads here trying to find out which app I should use for my Xeon machines. These are not necessarily the HT Xeons - in fact I know one is a fairly old Xeon system but since I have two systems with dual procs, I would love to get the most crunching power out of them.

According to CPU-Z:

System One:

2x Intel Xeon Prestonia core Brand ID 11 2.4 GHz Family F Model 2 Stepping 7 - socket 604 mPGA

Each processor has ONE Core and ONE thread

it will run MMX, SSE, SSE2

System Two:

2x Intel Xeon Prestonia core Brand ID 11 2.0 GHz Family F Model 2 Stepping 4 - socket 604 mPGA

Each processor has ONE core and TWO threads

It will run MMX, SSE, SSE2

Also, on older AMD procs (such as plain Athlon, etc.) - if they only support MMX and SSE, is it better to run the MMX or the SSE? And for the older Intel processors that do the same - run the SSE or the MMX?

I apologize for all the questions; but I have been crunching SETI for too long and have a bunch of systems running and figure I might as well get the most out of each one.

Thanks so much for the help.

Trever

Title: Re: XEON apps?
Post by: Josef W. Segur on 13 Aug 2007, 10:37:33 pm

Quote from: edwartr on 13 Aug 2007, 09:03:38 pm

I have read a few of the threads here trying to find out which app I should use for my Xeon machines. These are not necessarily the HT Xeons - in fact I know one is a fairly old Xeon system but since I have two systems with dual procs, I would love to get the most crunching power out of them.

According to CPU-Z:

System One:

2x Intel Xeon Prestonia core Brand ID 11 2.4 GHz Family F Model 2 Stepping 7 - socket 604 mPGA

Each processor has ONE Core and ONE thread

it will run MMX, SSE, SSE2

System Two:

2x Intel Xeon Prestonia core Brand ID 11 2.0 GHz Family F Model 2 Stepping 4 - socket 604 mPGA

Each processor has ONE core and TWO threads

It will run MMX, SSE, SSE2

Also, on older AMD procs (such as plain Athlon, etc.) - if they only support MMX and SSE, is it better to run the MMX or the SSE? And for the older Intel processors that do the same - run the SSE or the MMX?

I apologize for all the questions; but I have been crunching SETI for too long and have a bunch of systems running and figure I might as well get the most out of each one.

Thanks so much for the help.

Trever

For the XEONs, the SSE2-Intel-P4 version should be best.

The MMX version is the slowest, meant for systems which lack any floating point SIMD capability, the SSE version should be significantly better if that's supported. But there have been a few cases of systems with SSE on which the SSE version crashes, in that case dropping back to the MMX version makes sense.
                                                                             Joe

Title: Re: XEON apps?
Post by: edwartr on 14 Aug 2007, 10:39:42 am

Thanks so much for the info Joe.

Now, lets see if I can get a bump in performance on those wonderful Xeons.