Problem w/Prime95

[z28_2000]

I can't seem to get Prime95 to run in 2 instances. I know how to start 2 instances. But the 2nd one fails immediately. This is with my system at stock. I have run Memtest & Orthos with no problems (both stock and OC). But I can't get 2 Prime95s going at the same time. Is this common? Does this signal a problem? I have one set to affinity 0, the other to 1 so that each core runs its own Prime95. What am I doing wrong...please help!!!

e4300
DS3 v10
2GB Gskill PC26400 cl4
eVga 7600GT
Tuniq Tower

Thanks!!!

 

[heruur]

Run the second copy of prime95.exe with the -A1 command line argument in the command prompt. Make sure the second copy also has the "Start at Bootup" option set. Just remember when you boot up Windows, prime95 will be running so don't panic when your computer slows down alittle

 

[z28_2000]

I know how to start 2 instances....but I can't get the 2nd one to run without failing. Is this common?

 

[heruur]

What does it do error wise

 

[z28_2000]

The 1st instance starts just fine. So I start the torture test. I can load the second instance fine too. But the the second I start the torture test, its halted immediately. It says:

Cannot initalize FFT code, errcode=1005.
Torture Test ran 0 minutes - 0 errors, 0 warnings
Execution Halted.

Meanwhile, the 1st instance runs fine. I have the 1st affinity set to 0, the 2nd to 1. Thats the settings for a dual core right?

Thanks.

 

[heruur]

This makes no sense, is your system overclocked, I understand that the E4300 is extremely overclockable so I though you might be doing some stress tests

 

[z28_2000]

Well I had originally tried Prime95 while my system was OC. I got the error. So I set everything back to stock. Fired it up again and same result. FYI - I had no problems with Orthos when OC.

 

[heruur]

Okay, so when you launch Prime95 (first instance), you set it to torture test (do not set affinity from inside the program) and in the Windows task manager set that to Affinity 0. Then using the CMD prompt (run as admin if in Vista) and type prime95.exe -A1 (note, you will need to be in C:\program files\prime95 in the CMD prompt to do this) and them select torture test again and set that to Affinity 1 in task manager.

 

[z28_2000]

So, I set the affinity in the windows tast manager, NOT the program itself? Didn't even know you could do that. But I'll take a look and try it and see what happens. Thanks for your help so far.

 

[picho]

Why are you worrying about Prime95? Orthos is the same thing but designed to run multiple times. The beta version can stress all cores at once as well.

The fact that Prime95 doesn't run twice easily is a software design issue, not a hardware problem.

 

[heruur]

Why are you worrying about Prime95? Orthos is the same thing but designed to run multiple times. The beta version can stress all cores at once as well.

The fact that Prime95 doesn't run twice easily is a software design issue, not a hardware problem.

Its not a software design issue because I run 2 programs at once all the time, he didn't set it up properly and that's why its failing

 

[z28_2000]

Well I can get 2 to run at once by setting the affinity inside windows. However, the resource monitor only shows 50% CPU usage for 1 instance....nearly 0 for the other. If you are saying that Orthos will be just as good at "grading" my overclock, then I will forget about Prime. Although pride is setting in...i'd like to know I am not a complete idiot! LOL

 

[heruur]

Glad to hear, I knew it wasn't buggy software, its just how Windows handles the threads. When I run my on my (Intel Core 2 Duo T7200) the CPUs peg 100% when I run 2 instances and 50% when I run 1. Your CPU is faster in that it is feed data on a 800/1066 bus so that's probably why your second one is not pegging 100%. And no, your not a idiot, just someone trying to get answers to some honest questions