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World Community Grid Forums
Category: Retired Forums
Forum: Member-to-Member Support [Read Only]
Thread: Wrong memory score - bug? |
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Thread Status: Active Total posts in this thread: 16
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I have a micro ATX board that has two 512 MB memory sticks. The board uses shared memory of 32 MB for the integrated video. I am running Microsoft ME and on the system properties general tab it shows 992 MB (1024-32) which is correct. The agent on the machine report 960 MB under memory performance. It looks like it is missing 32 MB. Any idea why it is short changing the memory score?
----------------------------------------[Edit 1 times, last edit by Former Member at Sep 2, 2005 12:59:18 AM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
No idea, but it seems significant that it is dropping 64MB rather than 32MB from your memory. What do 3rd party diagnostic utilities say about your memory? http://www.worldcommunitygrid.org/forums/wcg/viewthread?thread=2490 has Belarc Advisor, SiSoft Sandra and Everest.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I will run memtest and post the results. The board is overclocked but I had run Prime95 and got solid results with no errors. Since the OS is quoting what I expect and I get no POST errors on boot it seems curious. Does the agent run some memory test different than what would be reported by the system on the general properties page?
----------------------------------------[Edit 2 times, last edit by Former Member at Sep 2, 2005 2:42:01 AM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Ah - memtest is showing errors on one of the tests. I've dropped the overclock and it gave the same result at standard board rates. Looks like I have some bad ram.
Thanks for the reponse - should have tested first. |
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retsof
Former Community Advisor USA Joined: Jul 31, 2005 Post Count: 6824 Status: Offline Project Badges: 
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Ah - memtest is showing errors on one of the tests. I've dropped the overclock and it gave the same result at standard board rates. Looks like I have some bad ram. That's good news....in a way. Bad memory.Thanks for the reponse - should have tested first. Even though prime95 runs OK in an overclocked situation, Rosetta will give your computer a workout and can get corrupted with the same overclocking rate. Overclocking must be monitored more carefully, and backed off until things are stable. Vaio has had a lot of experience with this. If workunits abort and send prematurely, it could be over-overclocked.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Agreed - but this guy faults with no overclock at all. I had run memtest with the original memory stick when I set the machine up and had set the overclocking and had gotten no errors. When I added the second stick (same speed and manufacturer) I didn't verify the memory at any clock speed. It appears to be bad ram and not an overclock issue since it fails the tests at standard FSB rates. When I overclocked this board I did not play with any of the CAS latencies and the memory itself is DDR 400 which I am using on a 333 MHZ bus.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I'll toss in my own opinion. I do not think that the memory check in the Agent will detect memory problems. I suspect that there are 2 separate issues here. I gave up on Windows ME and went back to Win 98 SE, so I never bothered to learn the gritty details, but I seem to recall that Windows ME had some limitations on memory size that the BIOS got around in various ways. Could it be that the WCG Agent is dropping an entire 64MB bank of memory because 32 MB is allocated to video?
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retsof
Former Community Advisor USA Joined: Jul 31, 2005 Post Count: 6824 Status: Offline Project Badges:
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Agreed - but this guy faults with no overclock at all. I had run memtest with the original memory stick when I set the machine up and had set the overclocking and had gotten no errors. When I added the second stick (same speed and manufacturer) I didn't verify the memory at any clock speed. It appears to be bad ram and not an overclock issue since it fails the tests at standard FSB rates. When I overclocked this board I did not play with any of the CAS latencies and the memory itself is DDR 400 which I am using on a 333 MHZ bus. I didn't explain the context. We know at least one part of your current memory is crud. The overclocking vs. Rosetta issue was just something to watch out for in the future. Prime95 isn't enough to guarantee similar results.
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----------------------------------------Work+GPU i7 8700 12threads School i7 4770 8threads Default+GPU Ryzen 7 3700X 16threads Ryzen 7 3800X 16 threads Ryzen 9 3900X 24threads Home i7 3540M 4threads50% [Edit 1 times, last edit by retsof at Sep 2, 2005 3:33:31 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I'll toss in my own opinion. I do not think that the memory check in the Agent will detect memory problems. I suspect that there are 2 separate issues here. I gave up on Windows ME and went back to Win 98 SE, so I never bothered to learn the gritty details, but I seem to recall that Windows ME had some limitations on memory size that the BIOS got around in various ways. Could it be that the WCG Agent is dropping an entire 64MB bank of memory because 32 MB is allocated to video? I have replaced the bad stick with a new one and ran memtest overnight with 9 sucessful passes and no errors. So now I am, with no overclocking, still seeing the same problem - it reports 960 MB instead of the system and memtest report of 992 MB. So I agree there appears to be an issue outside the bad ram. I would be surprised if the agent did memory checks for this term. So the agent is dropping 32 MB but I don't know that it is a ME problem given that the system reports the correct amount. I will drop back to 512 MB and see if I see the correct agent reported value at that level. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I will drop back to 512 MB and see if I see the correct agent reported value at that level. Okay - some interesting results. I checked both memory sticks with just one installed and got the same result. I set the shared video to the following levels and got: 32MB video - 480 MB on agent (correct) 64MB video - 448 MB on agent (correct) 128MB video - 384 MB on agent (correct) So I then went back sticks installed and did the same tests 32MB video - 960 MB on agent (wrong) 64MB video - 960 MB on agent (correct) 128MB video - 896 MB on agent (correct) But when I did do the 128 MB with both sticks installed I got a system error when booting that iosub.sys could not load and that I was either low on memory or the files were corrupted. In safe mode it loaded and running the agent got the 896 MB. I think this issue for the 128 MB is a windows ME problem since if I go back to 64 and 32 I can boot okay and if it goes back to 128 MB it gives the same boot fault. The only other thing I have not tried is doing the 512 MB check using the second memory slot (I did them all in the first one) to make sure there is not a board problem but given the memtest results I don't think so. Upshot is the mystery remains - why does agent not report the same avail memmory as the OS/memtest when I have large amount of memory installed and a small video memory. Does the agent round to 64 MB levels increments at large memory levels assuming you won't have the equivalent of a 32 MB memory stick? [Edit 1 times, last edit by Former Member at Sep 3, 2005 1:05:00 AM] |
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