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Message boards : Number crunching : Whats a good average sec/TS and other things...
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 old_user206071 Send message Joined: 29 Oct 06 Posts: 14 Credit: 99,628 RAC: 0 |
I just downloaded a coupled model. [Its my second actually, my first model had an error after 160 hours or so...] Havent reported my first trickle (whenever this might be...) Its at 0.08% after 1hour 50min... Anyway, whats a good average sec/TS? I have an AMD X2 4600+ EE @ 2.4GHz... I\'m about to finish a SAP with 22.4 sec/TS, but I guess thats different. :? It has 4147560 Timesteps, how many TS are one Trickle actually? And how many credits per trickle are granted? (No rounding please!) Thanx in advance! (And yes, I searched this message board ;)  My NEW BOINC-Site Why people joined BOINC Synergy... |
Strathpeffer Send message Joined: 9 Jan 07 Posts: 497 Credit: 342,899 RAC: 0 |
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MikeMarsUK Send message Joined: 13 Jan 06 Posts: 1498 Credit: 15,613,038 RAC: 0 |
My overclocked AMD X2 gets 1.8s/ts or thereabouts, but most X2s get around 2.0-2.3s/ts depending on their frequency and their memory speed. Core2Duos will get around 1.1 - 1.3s/ts, P4s get around 2.2-2.5 s/ts. One trickle is one model year (unlike SAP, where one trickle is 6 days), hence you get 160 trickles in the lifespan of the model. There are 25920 timesteps per trickle. I get two trickles per model per day on my AMD. 0.01 credit per timestep (hence 259.2 credits per trickle). SAP gives 0.1 credit per timestep, but since their timesteps are about 10 times slower, that\'s fair enough. I'm a volunteer and my views are my own. News and Announcements and FAQ |
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Send message Joined: 1 Jan 07 Posts: 1061 Credit: 36,714,904 RAC: 8,478 |
I just downloaded a coupled model. [Its my second actually, my first model had an error after 160 hours or so...] Havent reported my first trickle (whenever this might be...) Its at 0.08% after 1hour 50min... Some specific figures to start you off: There are 25,920 timesteps in a trickle, and you get 259.20 credits for that trickle - so exactly 100 timesteps = 1 credit. I thought there were 160 trickles in a full run, making a total of 4,147,200 - some rounding errors must have crept in after all. [Climate modellers will express the above figures as 3TS per model hour, or 72 per model day, multiplied by a \'notional\' 360 day model year: one trickle is also one model year] As to speed - I\'m getting between 2.4 and 2.5 sec/TS on an Intel Xeon @ 1.86GHz: that means approaching 4 months CPU time to complete each model. Up to you to decide whether that\'s a \"good average\". |
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old_user206071 Send message Joined: 29 Oct 06 Posts: 14 Credit: 99,628 RAC: 0 |
Thanx @ all! With this I can update my excel sheet, so after 2:45 hours and 0.118%, there are still 0,507% (or appr. 10hours) left to my first 259.2 credits :) Its sec/TS is currently 2.02, I hope it\'ll speed up a bit as soon as my SAP is finished. I read that the sec/TS is slower if two climate models run together... (No idea if its the same with a CPDN running with a SAP, though...) Thanx again! :) My NEW BOINC-Site Why people joined BOINC Synergy... |
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old_user206071 Send message Joined: 29 Oct 06 Posts: 14 Credit: 99,628 RAC: 0 |
Silly me, as mentioned above this is my second CPDN. The first actually failed after 300 hours (not 160), but its average sec/TS was 1.90 (not sure if it was overclocked at that time, though). Hmmm.... My NEW BOINC-Site Why people joined BOINC Synergy... |
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astroWX Send message Joined: 5 Aug 04 Posts: 1496 Credit: 95,522,203 RAC: 0 |
The slight slowing was due to contention for the Hard Disc, I think. Version 5.40 has Disc I/O reduced by more than 90%, so it should be less of an issue. The on-die memory controller is a benefit for AMD CPUs. (It\'s on the motherboard for Intel CPUs.) For what it\'s worth, 5.15 Runs on my three A64 X2 4400+ boxes range from 1.88 to 1.98 s/TS. The 5.40 Runs range from 1.86 to 1.89 s/TS, with one oddball at 1.95. (Given that all run in pairs, the slowpoke must be encumbered by a heavy parameter set.) Two of the machines have Kingston Hyper-X and one has Patriot RAM. None overclocked, but all are set to best factory spec and 1T timing, Dual Channel. (2-3-2-6 1T for the Kingston, 2-3-2-5 1T for the Patriot.) I\'m given to understand that good memory matters a lot with an AMD X2; it should really make a difference with such long Runs as we have here. "We have met the enemy and he is us." -- Pogo Greetings from coastal Washington state, the scenic US Pacific Northwest. |
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old_user206071 Send message Joined: 29 Oct 06 Posts: 14 Credit: 99,628 RAC: 0 |
After having finished the SAP wu successfully, CPDN speeded up. Its now at 1.87 sec/TS... (X2 4600+ at 2.46GHz, 2x 1GB DDR2-667 DualChannel CL5)... :) My NEW BOINC-Site Why people joined BOINC Synergy... |
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old_user206071 Send message Joined: 29 Oct 06 Posts: 14 Credit: 99,628 RAC: 0 |
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Pooh Bear 27 Send message Joined: 5 Feb 05 Posts: 465 Credit: 1,914,189 RAC: 0 |
AMD X2 4800+ @ 2.85GHz: 1.60sec/TS My Core 2 Duo 2.4G (stock) does 1.60. 
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Send message Joined: 4 Sep 06 Posts: 79 Credit: 5,583,517 RAC: 0 |
AMD X2 4800+ @ 2.85GHz: 1.60sec/TS But that is with only one model running then? Guess you will see a small drop in speed when running two. Have you clocked your machine? |
mo.v Send message Joined: 29 Sep 04 Posts: 2363 Credit: 14,611,758 RAC: 0 |
My old socket A AMD 1.33GHz whose CPU is probably fractured has been underclocked by 25%. Very good solution as it prevents the electronics part of the computer crashing the moment the climate model starts. It\'s now doing 8sec/TS and crunching steadily on a model that\'s a year old. The warm weather is also good for it as this expands the CPU and helps it hold together in one piece. The Intel dual core 3600 with 800MHz RAM has 2 models both doing 1.56sec/TS. Cpdn news |
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