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World Community Grid Forums
Category: Completed Research
Forum: Help Defeat Cancer
Thread: why can't i run hdc units anymore |
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Thread Status: Active Total posts in this thread: 5
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
When Help Defeat cancer began i could run the units both on my work and home computer.
My work computer has 510mb internal memory and my home computer has 1056mb internal memory. has the system requirments change been changed at any time? whats the reason between the big difference between the requirment of internal memory between hfp2, faah and hdc? |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
You need 750MB for HDC. This hasn't changed.
All the projects at WCG are wildly different. They do totally different things, in totally different ways. Comparing them is not easy. Each program uses the least memory that the programmers can contrive. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
hello richard,
here is a listing of system requirements for each project, HDC, hpf3, and faah. please note that they are minimums. in the case of hdc, the server will not download if after it's done the cpu/hardware calculations you don't have the physical ram required. by viktors Unlike the other projects which allocate a lot of virtual memory but use only a small portion for most of the time, this project uses lots of memory and touches most of it all the time. Thus if the machine had less than that amount of ram, paging activity (moving memory contents to disk and back) would go way up and make the machine sluggish. Thus we set the minimum high enough to not cause problems. There are periods of time during which the application has less virtual memory allocated, but when it gets to the points where more is needed, this requires a higher minimum. taken from this thread i hope this helps to explain it. bummer isn't it?  |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Interestingly, we have already had complaints that the minimum is too low and too high. Seems you can't please all the people all the time....
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retsof
Former Community Advisor USA Joined: Jul 31, 2005 Post Count: 6824 Status: Offline Project Badges: 
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Then it must be about right to satisfy the average griper.
----------------------------------------I haven't had a bit of problem, except for noticing large downloaded files. I can finish one on my AMD systems in about 1 hour, 43 minutes. I got my first HDC priority workunit. Another one is preempted, and this newly downloaded, executing workunit has a deadline of 4 days. The priority workunit finished in 2 hours, 28 minutes. I also set the new BOINC parameter that allows download of other projects in case work runs out on the selected project(s). Two computers were previously getting a mixture and are now receiving only HDC, and two smaller ones receive FAAH.
SUPPORT ADVISOR
----------------------------------------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 2 times, last edit by retsof at Jul 27, 2006 12:35:26 PM] |
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