v8 issues on very old cruncher

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Profile j mercer
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Message 1772706 - Posted: 20 Mar 2016, 0:12:59 UTC

I'm having issues with my original cruncher a 200MHz Pentium MMx P55 128MB UW2SCSI. It errors v8 wu in 20 seconds or less.

It has crunched everything up to this point. It is bare bones rig. I shut everything down even Explorer on it when crunching to get those few extra cycles.

Not a major issue for now for it takes this machine two weeks a wu. It's pulling 120 watts continuous for that one wu so I only run it now when there is something new to test.

I double checked everything I believe and have read the forums with no luck yet.

I've gone over this thread several times. v7 issues on very old cruncher and did the 'libfftw3f-3-1-1a_upx.dll' renaming routine.

I would like to keep this machine crunching just for the nostalgic. Rolling up on 17 years. 8^)

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Profile Sean Project Donor
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Message 1772718 - Posted: 20 Mar 2016, 1:16:11 UTC - in response to Message 1772706.  

I've also done some seti v7 crunching on a 586 class chip (AMD K6-2+ in my case. See thread: "Retro PC seti crunching"). Using the older .dll file, v7 worked fine. But, like your rig, mine just throws an error trying to run v8 (old .dll, new .dll, doesn't matter). I think the likely scenario is that the new v8 app is trying to use CPU instructions that just aren't present in the 586.
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Profile BilBg
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Message 1772800 - Posted: 20 Mar 2016, 13:19:15 UTC

If you are in a mood to experiment - it may be possible under QEMU emulator but how "fast" (slow)...
http://qemu-manager.en.lo4d.com/
 


- ALF - "Find out what you don't do well ..... then don't do it!" :)
 
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Profile Sean Project Donor
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Message 1773505 - Posted: 23 Mar 2016, 17:11:14 UTC

If you're looking to throw the processing muscle of that Pentium MMX behind another project, PrimeGrid seems to be running fine so far on my K6-2+.

I also tried einstein@home and lhc@home. Neither worked.
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Profile Raistmer
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Message 1773570 - Posted: 23 Mar 2016, 23:21:47 UTC
Last modified: 23 Mar 2016, 23:21:57 UTC

I'm afraid new build had no working non-SSE path. But hard to say w/o any stderr listing.
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Profile j mercer
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Message 1773646 - Posted: 24 Mar 2016, 6:43:30 UTC - in response to Message 1772800.  

If you are in a mood to experiment - it may be possible under QEMU emulator but how "fast" (slow)...
http://qemu-manager.en.lo4d.com/

Thanks, I looked into that and it was more than I wanted to take on. The machine is so slow that to try doing anything on it is laborious at best.

I read where 1995 full towers make good boat anchors. Har! 8^)
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Message 1773648 - Posted: 24 Mar 2016, 6:53:55 UTC - in response to Message 1773570.  

I'm afraid new build had no working non-SSE path. But hard to say w/o any stderr listing.

From the man in the know. Thanks for the insight.

Well that cinches it. New Topic:

*For Sale*

Inexpensive vintage boat anchor
Never used in water

Inquire with in

8^)

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Message boards : Number crunching : v8 issues on very old cruncher


 
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