Message boards : Number crunching : HADCM3N propensity to crash.
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Send message Joined: 15 May 09 Posts: 4540 Credit: 19,039,635 RAC: 18,944 |
I have two of these tasks running on this box, one at 74% and one at 84%. This computer is hibernated every night without suspending the tasks. They have also survived one power outage. Does this indicate that these units are no longer quite as susceptible to crashing as they were or does it mean that the linux hibernate has improved? The dual core atom also running linux is only hibernated once a week and as it runs so slowly it is a bit early to say how it is doing. |
Send message Joined: 7 Aug 04 Posts: 2187 Credit: 64,822,615 RAC: 5,275 |
I don't think there's been any change to hadcm3n, so you are either 1 very lucky, or 2 linux hibernate has got better. I'm guessing 1, but who knows. |
Send message Joined: 15 May 09 Posts: 4540 Credit: 19,039,635 RAC: 18,944 |
I have just thought of another couple of factors and have also looked at a couple of sites talking about the hibernate function. Not sure but these may be the first coupled ocean tasks since I upgraded to BOINC 7.X. I have also increased memory to 4GB from 2. One of the sites I looked at suggested that there had been a bug in the kernel memory allocation, another suggested that older versions of hibernate had problems above 4GB of ram though as that is the maximum my board can take it doesn't affect me. Less than 100 hours computing time to see if first task will complete now. Second task is about 10% behind the first. |
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