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[quote]My new computer allowed me to squeeze in one more completed range before I go on vacation.
[/quote] Well, I got to squeeze in yet another range. This computer rocks! 490T-495T complete, about 11200 factors found: [URL]http://www.sendspace.com/file/dwsnad[/URL] My flight leaves in just a couple of hours, so this will really be the last range I finish before going on vacation. |
480T-485T (range 1) complete, 11592 factors: [url]http://www.sendspace.com/file/vche0n[/url] (Lennart's site is acting a little strangely ATM.)
Reserving 495T-500T. BTW @Oddball: I'm not sure if you'll get this before departing, but did you by chance run a comparison to see which is faster overall, one 6-threaded instance of tpsieve or 6 one-threaded instances? In my experience, even the best of multithreaded applications suffers a little performance hit as it scales across multiple cores; I'm curious to see how pronounced that effect is with 6 threads. |
[quote=mdettweiler;224391]480T-485T (range 1) complete, 11592 factors: [URL]http://www.sendspace.com/file/vche0n[/URL] (Lennart's site is acting a little strangely ATM.)
Reserving 495T-500T. BTW @Oddball: I'm not sure if you'll get this before departing, but did you by chance run a comparison to see which is faster overall, one 6-threaded instance of tpsieve or 6 one-threaded instances? In my experience, even the best of multithreaded applications suffers a little performance hit as it scales across multiple cores; I'm curious to see how pronounced that effect is with 6 threads.[/quote] From memory tpsieve is a memory hog. He probably doesn't have enough memory to run 6x1Gb jobs |
[quote=henryzz;224451]From memory tpsieve is a memory hog. He probably doesn't have enough memory to run 6x1Gb jobs[/quote]
Hmm, hadn't thought of that. I suppose 2 instances with 3 threads apiece would work pretty well, though--depending on how tpsieve scales (the only other comparison point I have is Prime95, which does a radically different type of calculation; it scales badly for >4 threads), that may do the trick to recover a lot of performance loss. |
When I was sieving for n=333333 I got the best performance by running -t2 sieves which was as fast as two single threads but less administration. Two times -t2 on a quad, four times on a V8. More threads per sieve were inefficient even when I did not reach memory limits.
BTW: which is the most recent release for Linux64? Maby newer version behave differently... |
495T-500T complete, 11300 factors: [url]http://www.sendspace.com/file/1mgk1w[/url]
Will return after the impending NPLB rally. :smile: |
[quote=Oddball;223885]I'll be away too for a while. My vacation's a bit shorter - from August 7th until the 12th.[/quote]
I'm back :smile: Reserving 500T-510T. [quote] Is now Moomoo2=MooooMoo ?[/quote] Probably not, the name seems to be a Pokemon reference and nothing more. In that game, MooMoo milk was an item used to heal Pokemon. It came from a Pokemon called Miltank, which also happens to be MooMoo2's avatar. As for the number 2 in MooMoo2's username, I'm guessing that it's there because Miltank first appeared in the 2nd generation of Pokemon. Anyway, I'm not merging the MooMoo2 and the MooooMoo names in the stats page. MooMoo2 =/= MooooMoo unless proven otherwise. [quote] I'm not sure if you'll get this before departing, but did you by chance run a comparison to see which is faster overall, one 6-threaded instance of tpsieve or 6 one-threaded instances? In my experience, even the best of multithreaded applications suffers a little performance hit as it scales across multiple cores; I'm curious to see how pronounced that effect is with 6 threads.[/quote] [quote]From memory tpsieve is a memory hog. He probably doesn't have enough memory to run 6x1Gb jobs[/quote] I have 8GB of RAM, which is barely enough to fit 6 X 1GB threads (Windows 7 takes up nearly one and a half gigs of RAM). Here were the results: one 2-threaded instance of tpsieve: 33.1 M p/sec two 1-threaded instances of tpsieve: 33.3 M p/sec one 6-threaded instance of tpsieve: 85.2 M p/sec six 1-threaded instances of tpsieve: 84.9 M p/sec The performance hit/gain seems to be negligible for tpsieve. [quote] 495T-500T complete[/quote] That finishes a major milestone - the work done since last year is equivalent to sieving n=480K-495K until p=500T (the 480K-485K range is missing 200T-300T, but this is balanced out by the 485K-495K range, which is completed to 550T). Let's see whether we can reach 1P by the end of next month. Thanks to everyone who participated! |
Reserving 510T-515T (range 1).
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500T-510T complete, about 22100 factors found:
[URL]http://www.sendspace.com/file/bh3z6d[/URL] Reserving 515T-525T. |
I'm back. I've downloaded and verified all files from posts above.
Oddball: Unfortunately, it was (is?) extremely hot here and we had problems with electricity. Range 200T-300T should have been completed, but it is not, I'm now continuing it (32% done). The machine that was processing 550T-750T is a remote one and it is still down. I don't know how much of 550T-750T is done, so in order not to duplicate work, I'll be waiting until the machine is fixed. |
515T-525T complete, about 21300 factors found:
[URL]http://www.sendspace.com/file/8mbks2[/URL] I'll get 525T-550T. [quote=gribozavr;225500] Oddball: Unfortunately, it was (is?) extremely hot here and we had problems with electricity. Range 200T-300T should have been completed, but it is not, I'm now continuing it (32% done). The machine that was processing 550T-750T is a remote one and it is still down. I don't know how much of 550T-750T is done, so in order not to duplicate work, I'll be waiting until the machine is fixed.[/quote] I see. When you're done with the 200T-300T range, could you upload the 480K-485K file as well as the small k file (k<100000 for n=480K-481K)? I might try some LLR work for a change. |
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