![]() Also, it's clear from that announcement that the 20%-30% speedup I mentioned refers to a single application - by implication, v6.73 - with two modes of operation. If you look back at the announcement link from last time, you'll see that it is in the "GPUGRID and Fermi" thread. Obviously, Windows doesn't exactly run 'one task per core' - the thermal stresses would be horrendous if seven cores were generating maximum heat and the eighth was idle - but there should be plenty of spare cycles for the syncing. I'm running seven BOINC CPU tasks plus one GPUGrid task on the single GTX 470 GPU. Message 17177 - Posted: | 14:03:30 UTC - in response to Message 17175.Īll my experiments with SWAN_SYNC in this thread relate to host 71413, which as you can see is an eight-core host (that's eight real cores, not HT semi-cores). Swan_sync now works for the 6.12app and with non-Fermi cards as well as the 6.13app for Fermi cards or some pre-Fermi cards. Either way, it should do soon (if/when these are compiled for CUDA 3.0, or more likely 3.1). I think the variable may work for the more recent 6.72 WU's but to a lesser extent. If you wanted to use four GPU's a single CPU core is not enough (for all 4 GPUs), you need a Quad core CPU, or better. ![]() So it is most notably for Fermi, but note that it requires the cruncher to leave one CPU thread free per GPU, to fully benefit from the Environmental Variable. It is there for CUDA 3 or above (the forthcoming 3.1 that might be 11% faster than CUDA 3.0, which is 30-35% slower than CUDA2.2 which does not work for Fermis, so this might even things out). I don’t think that swan_sync works for 6.03 tasks, (compiled for CUDA 2.2). Sudo gedit /etc/boinc -client/cc _config.xml Sudo cp /etc/boinc -client/cc _config.xml /etc/boinc -client/backup _cc _config.xml Message 17175 - Posted: | 13:44:05 UTC - in response to Message 17172.įrom a Terminal goto the folder containing the cc_config.xml file by typing, See this post for an explanation of Swan_Sync: If I'm right swan-sync "1" would use core 2 etc.ĭoes anyone run a CPU monitor? If so you might see a different core being used as you cycle the numbers?Įvidently this is total nonsense (my understanding was incorrect). I took swan-sync value "0" to mean (meaning core 1 to non-geeks). On multi-core CPUs they start counting at zero so on a quad core you would have core 0, 1, 2, and 3 (instead of 1, 2, 3, 4). Might be worth experimenting further.ĭisclaimer: I'm a total noob and I don't know what I'm talking about. That run time of 14,588.31 seconds is at least 1,000 seconds faster than any previous run, including my only previous KASHIF_HIVPR_auto_spawn. So I ran workunit 1491415 (reported 18:30:44) with variable Swan_Sync, value 1. Most programmers would use value "1" to activate an option, and "0" for the default setting. This morning, I set the value to be 0: workunit 1490610 (reported 14:13:59) was relatively fast, but within the same range as pervious tasks. You would think that (name, value) would be a more natural way of doing it, wouldn't you? I've been running with the whole "Swan_Sync=0" string in the value field ever since host 71413 went online. Start, right (alternate) click Computer, Click Properties - Opens System Window.Ĭlick Advanced System Settings (left side), then Environmental Variables. Start, right (alternate) click My Computer, Click Properties - Opens System Properties Window.Ĭlick the Advanced Tab, then Environmental Variables. ![]() You can add this Environmental System Variable to dedicate a CPU core for each GPU (just 1 thread for HT systems), Report tasks immediately on Vista or win 7: Message 16832 - Posted: | 13:50:33 UTC - in response to Message 16595.Ĭ:\Documents and Settings\All Users\Application Data\BOINC\ It will also allow you to collect larger bonuses. This will optimise Work Unit turn around and expedite the project. Open Boinc in Advanced View, Click Advanced, Preferences, under the network usage Tab set the additional work buffer to a low value. For Vista and Win7 create the file in this folder, C:\ProgramData\BOINC (this folder will likely be hidden, but should open if you type it into Explorer).ĭepending on your driver, you may also need to add this line if you want to use multiple GPUsįor GPUGRID it is better to set a low cache level of say 0.05days (rather than use the default 0.25days). ![]() How to report tasks immediately (needed for Boinc 6.12.34 and earlier):Ĭreate, or edit an existing, cc_config.xml file in the Program Data folder for Boinc, using a text editor (Notepad),
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