Posts by old_user526839

1) Questions and Answers : Windows : multi-CPU issue (Message 34267) Posted 11 Jul 2008 by old_user526839 Post: ... that would certainly explain why I haven\'t seen it! All my 32-bit Vista PCs have maximum RAM. However, I can\'t see what advantage the operating system thinks it\'s getting by avoiding one processor when short of RAM. And slabs aren\'t that demanding. Agreed. My system, though RAM challenged, does a gine job of splitting all other tasks among the dual cores. This issue with BOINC was the only time I\'ve ever noticed this behavior, but it hasn\'t happened since. After setting the affinity for one thread to the other core, BOINC has restarted numerous times and Vista has properly put each thread on its own core just as I\'d expect. Perhaps this was just a fluke. When in doubt, I blame Windows. This approach has proved accurate since I was first disappointed by Windows3.1, so I\'m sticking with it ;). I don\'t get a lot of swapping, either, so even with 1Gb of memory, I\'m not as bad off as I fully expected when the other slot failed. I tend to run above 1Gb of total commit, but much of this is due to inactive tasks that can be paged without consequence until I use them. I never run Aero (expensive eye candy) and am very strict about even which background tasks and optional services I run, so 1Gb is only frustrating when I start doing video editing ;). Yea, really. Dell isn\'t jumping at the opportunity to swap out my laptop motherboard or send me a new one, but I certainly need another 1Gb just to lower the frustrating factor. Thanks for the great responses. Be well.
2) Questions and Answers : Windows : multi-CPU issue (Message 34250) Posted 9 Jul 2008 by old_user526839 Post: Installed BOINC and joined climateprediction.net today. Two models began running and my preferences include using both CPU\'s, but I noticed that both threads were running on the same CPU. I manually set one thread\'s affinity for the unused CPU and now am getting full utilization, but I am wondering why both models would end up on the same CPU. Is Windows fully responsible for CPU affinity or can BOINC assign affinities to maximize utlization? I recognize that my memory may be a limitation for this particular project, but the change in CPU affinity had no affect on memory consumption. My Dell laptop\'s second memory slot died on me and this is why I\'m short on RAM. BOINC: v5.10.45 OS: Windows Vista Business (non-SP1) CPU: Dual 1.6GHz Intel T2060 RAM: 1Gb