Message boards :
Number crunching :
How About, Short and Long WU's?
Message board moderation
Author | Message |
---|---|
Rick A. Sponholz Send message Joined: 13 Jun 99 Posts: 43 Credit: 23,179,807 RAC: 0 |
Can't remember ever reading about this on the forums, and couldn't find it through forum search either. GPUGRID has two different ques, one Short, and one Long. The Long que is for high end machines, and still require 8-12 hours to complete each wu. I remember in the old days, it would take days to complete a SETI wu. Now it takes about 3 minutes. I understand keeping wu small, so everyone can crunch. My very old, baby PC (263MHz & 128MB RAM) still takes over 200 hours to crunch, and I thank SETI for continuing to feed him. But, my new machines could really use bigger bites (pun intended:) At GPUGRID's preference page, you can select short, long, or both. Has SETI@Home ever considered a second que? Regards, Rick |
William Send message Joined: 14 Feb 13 Posts: 2037 Credit: 17,689,662 RAC: 0 |
2x2 (twice the length, twice the sensitivity) units are in beta testing. They'll need a lot of calibaration, so we won't be seeing them before V7. And I'm not taking any bets on V7 going out this year. (Yes I'm aware it's just February.) William the Silent A person who won't read has no advantage over one who can't read. (Mark Twain) |
Rick A. Sponholz Send message Joined: 13 Jun 99 Posts: 43 Credit: 23,179,807 RAC: 0 |
Thanks for the reply. Glad to know longer wu's will eventually apear. If I can be of any help, Let me know. Rick |
Wiggo Send message Joined: 24 Jan 00 Posts: 34744 Credit: 261,360,520 RAC: 489 |
You do realise that you can select to do AstroPulse v6 workunits, they are larger and take longer to process. Cheers. |
petri33 Send message Joined: 6 Jun 02 Posts: 1668 Credit: 623,086,772 RAC: 156 |
You do realise that you can select to do AstroPulse v6 workunits, they are larger and take longer to process. Yeah, like 6 of them in 3.5 hours on CPU and faster with a decent GPU. To overcome Heisenbergs: "You can't always get what you want / but if you try sometimes you just might find / you get what you need." -- Rolling Stones |
Rick A. Sponholz Send message Joined: 13 Jun 99 Posts: 43 Credit: 23,179,807 RAC: 0 |
Yes, I know about Astropulse WU. Unfortunately, don't get but a few per week. Not nearly enough to keep all my cores busy. Regards, Rick |
Cliff Harding Send message Joined: 18 Aug 99 Posts: 1432 Credit: 110,967,840 RAC: 67 |
Yes, I know about Astropulse WU. Unfortunately, don't get but a few per week. Not nearly enough to keep all my cores busy. Regards, Rick If you want more Astropulse, go into your project preferences and make sure only the bottom 2 aplication boxes are checked. That way AP will have priority and will fill in with other apps when not available. You might also be interested in working Opencl on your cards. Be warned that with the amount of data being sent out to the Setiverse, it will take some time to get the d/l's to complete, but I have found that the deadlines are far enough out that I haven't had many timed out because they didn't get processed in time. My problem at the moment is that I have 60 AP units in the pipeline since yesterday and the slow d/l speed doesn't help. What I would like to see is a separate server & line that services APs only, maybe in the future when things get settled down as far as location is concerned it might happen. But in the meantime I keep hoping that I win the big Lotto, so that I can donate big bucks to help with the bandwith problem and changing out all of the old out of date servers for new ones. I don't buy computers, I build them!! |
Claggy Send message Joined: 5 Jul 99 Posts: 4654 Credit: 47,537,079 RAC: 4 |
Yes, I know about Astropulse WU. Unfortunately, don't get but a few per week. Not nearly enough to keep all my cores busy. Regards, Rick You're also got to add an OpenCL AP app to your app_info before your GPUs will do AP work. Claggy |
Tim Send message Joined: 19 May 99 Posts: 211 Credit: 278,575,259 RAC: 0 |
You do realise that you can select to do AstroPulse v6 workunits, they are larger and take longer to process. With current conditions you can’t work AP wu’s. Without proxy it takes over an hour to download, with lots of stops and restarts, causing the system dry from MB wu’s. But yes if you manage to download it, take longer to process. Tim |
Rick A. Sponholz Send message Joined: 13 Jun 99 Posts: 43 Credit: 23,179,807 RAC: 0 |
Thanks for the advice Cliff, Tim, and Claggy. I had already chosen to receive Astropuls wu's, but lacked the courage to install and modify my app_info file. I had cheated, and used Lunatics' installer back when it was still available. The installer gave me Enhanced 6.03 WU's on GPU's and the optimized Astropulse on CPU. After all these years, I can't believe I didn't think of unchecking all but Astropulse, and using the "use other apps when work not available" options to fill my que. Thanks VERY much for your suggestions. I took the plunge and manually installed Lunatic's Astropulse App, and modified the app_info file myself, and it actually worked. I've gotten about 8 AP wu's between my 3 machines with elgible GPU's, and they completed in less than an hour. Now if I could only get more. Thanks again for the help, and keep crunching. Regards, Col. Rick A. Sponholz |
Claggy Send message Joined: 5 Jul 99 Posts: 4654 Credit: 47,537,079 RAC: 4 |
The next step is to add some parameters to your ap_cmdline_win_x86_SSE2_OpenCL_NV.txt file, the default parameters are suitable for any GPU, what ever the speed: For a starting point try: -unroll 10 -ffa_block 6144 -ffa_block_fetch 1536 then: -unroll 12 -ffa_block 8192 -ffa_block_fetch 4096 What the parameters do is documented in the readme. Claggy |
©2024 University of California
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.