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2017-03-23, 18:38   #1376

"Kieren"
Jul 2011
In My Own Galaxy!

2×5,059 Posts

Quote:
 Originally Posted by Mark Rose Might be worth backing off the timings slightly then.
So far, I have increased the main timings by 1 clock each, but that result does suggest that I'm running (too) close to the edge. ATM, it is at 16-18-18-36. Maybe go to CAS 17?

2017-03-23, 19:22   #1377
Mark Rose

"/X\(‘-‘)/X\"
Jan 2013

2,917 Posts

Quote:
 Originally Posted by kladner So far, I have increased the main timings by 1 clock each, but that result does suggest that I'm running (too) close to the edge. ATM, it is at 16-18-18-36. Maybe go to CAS 17?
I think it's been shown that Prime95 isn't very latency sensitive, so backing off one more probably wouldn't hurt performance much.

If the stock times were 15-17-17-35 at 2666, adjusting proportionately for 3200 would give you 18-21-21-42. You're running a very tight overclock at the moment.

2017-03-24, 02:35   #1378
Dubslow

"Bunslow the Bold"
Jun 2011
40<A<43 -89<O<-88

11100001101012 Posts

Quote:
 Originally Posted by kladner **It does a current range DC in about 25 hours in its current setup: i7-6700K @ 4.3 GHz full time, DDR4-2666 RAM running at 3200. Iterations hover around 2.2 ms. At its best it holds about 2.17 ms.
Did you mean four cores each doing ~9ms/iter? Cause if you didn't, holy crap that's more than x10 as fast as my 2600K...

Edit: Even if you did, that's still ~3 times as fast as my SNB @ 39.6M

Last fiddled with by Dubslow on 2017-03-24 at 02:36

2017-03-24, 02:57   #1379
Mark Rose

"/X\(‘-‘)/X\"
Jan 2013

2,917 Posts

Quote:
 Originally Posted by Dubslow Did you mean four cores each doing ~9ms/iter? Cause if you didn't, holy crap that's more than x10 as fast as my 2600K... Edit: Even if you did, that's still ~3 times as fast as my SNB @ 39.6M
Haswell and later with FMA3 make a huge difference.

My i5-6600's at 3.3 GHz do 39.6M at 3.35 ms/iter, and 68.2M (4096k fft) at 11.9 ms/iter. That's with DDR4-2133. I disable the turbo boost to save power (running at 3.6 GHz is no faster).

I also have a i7-4770k at 3.9 GHz with DDR3-2400 that's slightly faster than my i5-6600's.

2017-03-24, 04:38   #1380
Dubslow

"Bunslow the Bold"
Jun 2011
40<A<43 -89<O<-88

3×29×83 Posts

Quote:
 Originally Posted by Mark Rose Haswell and later with FMA3 make a huge difference. My i5-6600's at 3.3 GHz do 39.6M at 3.35 ms/iter, and 68.2M (4096k fft) at 11.9 ms/iter. That's with DDR4-2133. I disable the turbo boost to save power (running at 3.6 GHz is no faster). I also have a i7-4770k at 3.9 GHz with DDR3-2400 that's slightly faster than my i5-6600's.

Man. That means that even with sub par optimizations for AMD's Zen, it would still blast these SNBs out of the water. Holy cow.

Money is tight, so maybe I'll wait 'til AVX-512 is available in desktop form... or maybe AMD will have open sourced (or at least unlocked) their version of the on-chip crapware...

2017-03-24, 07:09   #1381

"Kieren"
Jul 2011
In My Own Galaxy!

1011810 Posts

Quote:
 Originally Posted by Dubslow Did you mean four cores each doing ~9ms/iter? Cause if you didn't, holy crap that's more than x10 as fast as my 2600K... Edit: Even if you did, that's still ~3 times as fast as my SNB @ 39.6M
Sorry. Should have been more specific. That is running all four cores on one worker. The times I gave are actual, per P95. They are also the best I have gotten by reducing other system loads, such as not letting Adobe and Acronis load a dozen services each. Shutting down multi-tabbed Firefox helps, too.
Attached is what it looked like a few minutes ago.
2nd attachment is after a relative clean boot without any other CPU hogs running.
Oops, sort of. I put the exponent out there, but I doubt anyone else could finish before me.
Third attachment is fresh boot with 17-18-18-36 timings.
4th is with multi-tab browser, two cards running mfaktc, etc.
Attached Thumbnails

Last fiddled with by kladner on 2017-03-24 at 07:58

 2017-03-24, 09:52 #1382 kladner     "Kieren" Jul 2011 In My Own Galaxy! 2×5,059 Posts Now running Blend custom: 1024 to 4096, 12000 MB to TT (out of 16 GiB.)
2017-03-24, 15:21   #1383
Mark Rose

"/X\(‘-‘)/X\"
Jan 2013

2,917 Posts

Quote:
 Originally Posted by Dubslow Man. That means that even with sub par optimizations for AMD's Zen, it would still blast these SNBs out of the water. Holy cow. Money is tight, so maybe I'll wait 'til AVX-512 is available in desktop form... or maybe AMD will have open sourced (or at least unlocked) their version of the on-chip crapware...
Yeah, and those benchmarks are using only 80 watts per system. I have four on a single Gold-rated power supply, total of ~320 watts, with CPU fan speeds affecting the total depending on room temperature.

AVX-512 may be useful on a 6 core Intel chip with fast quad channel memory. Otherwise there isn't enough memory bandwidth.

The best bang for the buck for Prime95/mprime is still the quad core i5's.

 2017-04-01, 23:46 #1384 Madpoo Serpentine Vermin Jar     Jul 2014 29×113 Posts I finally remembered to try out my new system (i7-7700K). I've spent zero minutes optimizing anything... I just slapped the cpu/memory into my new motherboard and got it all going last week and then promptly forgot about doing anything else at the time. On an older 4-core Xeon (X5550 @ 2.67 GHz) I'm testing M45523073 using all 4 cores and it's doing ~ 10.75 ms / iteration. With my new system doing the same exponent I'm doing ~ 2.7 ms / iteration. Pretty big difference just from the clock speed and added features (FMA, AVX2 especially). I'm using version 28.9 build 2 and it didn't specifically id my 7700K... I keep meaning to get the new version going so maybe George has that now. Now, back on topic for the thread... here's a new list of strategic double checks... Code: exponent Bad Good Unk Sus Solo Mis worktodo 40936981 2 0 1 0 1 0 DoubleCheck=40936981,72,1 41265437 2 1 1 0 1 0 DoubleCheck=41265437,73,1 41554363 2 1 1 0 1 0 DoubleCheck=41554363,72,1 41683111 2 1 4 0 4 0 DoubleCheck=41683111,72,1 41683361 2 1 4 0 4 0 DoubleCheck=41683361,72,1 41850253 2 1 1 0 1 0 DoubleCheck=41850253,72,1 42011779 2 1 4 0 4 0 DoubleCheck=42011779,72,1 42485353 2 0 1 0 1 0 DoubleCheck=42485353,72,1 42897233 2 0 2 0 2 0 DoubleCheck=42897233,72,1 43177613 2 0 2 0 2 0 DoubleCheck=43177613,72,1 43200607 2 0 2 0 2 0 DoubleCheck=43200607,72,1 43405309 2 0 1 0 1 0 DoubleCheck=43405309,72,1 43533289 2 1 4 0 4 0 DoubleCheck=43533289,72,1 43889341 2 1 2 0 2 0 DoubleCheck=43889341,72,1 44183423 2 1 2 0 2 0 DoubleCheck=44183423,72,1 44207987 2 1 1 0 1 0 DoubleCheck=44207987,72,1 44563391 2 1 2 0 2 0 DoubleCheck=44563391,72,1 44679539 2 0 1 0 1 0 DoubleCheck=44679539,72,1 44685301 2 1 1 0 1 0 DoubleCheck=44685301,72,1 44692499 2 1 2 0 2 0 DoubleCheck=44692499,72,1 44731487 2 0 2 0 2 0 DoubleCheck=44731487,72,1 44885623 2 1 1 0 1 0 DoubleCheck=44885623,72,1 45156523 2 0 1 0 1 0 DoubleCheck=45156523,72,1 45273457 4 2 1 0 1 0 DoubleCheck=45273457,72,1 45410153 2 1 1 0 1 0 DoubleCheck=45410153,72,1 45525721 2 1 1 0 1 0 DoubleCheck=45525721,72,1 45543581 2 1 3 0 3 0 DoubleCheck=45543581,72,1 45582727 2 1 6 0 6 0 DoubleCheck=45582727,72,1 45616943 2 1 1 0 1 0 DoubleCheck=45616943,72,1 45866747 2 1 1 0 1 0 DoubleCheck=45866747,72,1 46107119 2 0 2 0 2 0 DoubleCheck=46107119,72,1 47230021 2 1 6 0 6 0 DoubleCheck=47230021,72,1 48776531 2 1 3 0 3 0 DoubleCheck=48776531,72,1 49712329 2 1 1 0 1 0 DoubleCheck=49712329,73,1 50946859 2 0 5 0 5 0 DoubleCheck=50946859,73,1 51099551 2 1 3 0 3 0 DoubleCheck=51099551,73,1 51589631 2 0 1 0 1 0 DoubleCheck=51589631,73,1 52076957 2 1 2 0 2 0 DoubleCheck=52076957,73,1 52315561 2 0 5 0 5 0 DoubleCheck=52315561,73,1 52527809 2 1 2 0 2 0 DoubleCheck=52527809,73,1 52667969 2 1 6 0 6 0 DoubleCheck=52667969,73,1 53283199 2 0 5 0 5 0 DoubleCheck=53283199,73,1 53541101 2 1 3 0 3 0 DoubleCheck=53541101,73,1 53558293 2 1 3 0 3 0 DoubleCheck=53558293,73,1 53968253 2 0 5 0 5 0 DoubleCheck=53968253,73,1 54201487 2 0 9 0 9 0 DoubleCheck=54201487,73,1 54697597 2 0 9 0 9 0 DoubleCheck=54697597,73,1 54702709 2 0 9 0 9 0 DoubleCheck=54702709,73,1 55716697 2 1 2 0 2 0 DoubleCheck=55716697,73,1 56104721 2 1 2 0 2 0 DoubleCheck=56104721,73,1 56664947 2 1 6 0 6 0 DoubleCheck=56664947,73,1 56669819 2 1 6 0 6 0 DoubleCheck=56669819,73,1 57103121 2 0 9 0 9 0 DoubleCheck=57103121,73,1 57115549 2 0 9 0 9 0 DoubleCheck=57115549,73,1 57753071 2 0 1 0 1 0 DoubleCheck=57753071,73,1 57798409 2 0 9 0 9 0 DoubleCheck=57798409,73,1 57954781 2 0 9 0 9 0 DoubleCheck=57954781,73,1 58370549 2 0 9 0 9 0 DoubleCheck=58370549,73,1 58370563 2 0 9 0 9 0 DoubleCheck=58370563,73,1 59243747 2 0 2 0 2 0 DoubleCheck=59243747,73,1 59563531 2 0 2 0 2 0 DoubleCheck=59563531,73,1 61999547 2 1 3 0 3 0 DoubleCheck=61999547,74,1 62026201 2 1 3 0 3 0 DoubleCheck=62026201,74,1 62089483 2 1 4 0 4 0 DoubleCheck=62089483,74,1 62121461 2 1 4 0 4 0 DoubleCheck=62121461,74,1 62132173 2 1 4 0 4 0 DoubleCheck=62132173,74,1 63613633 2 1 4 0 4 0 DoubleCheck=63613633,74,1 67982251 4 2 2 0 2 0 DoubleCheck=67982251,74,1 69072589 4 2 2 0 2 0 DoubleCheck=69072589,74,1 69675829 2 1 4 0 4 0 DoubleCheck=69675829,75,1 70092619 2 1 5 0 5 0 DoubleCheck=70092619,75,1 70161713 2 1 5 0 5 0 DoubleCheck=70161713,75,1 70832389 3 0 1 0 1 0 DoubleCheck=70832389,75,1 71086529 2 1 4 0 4 0 DoubleCheck=71086529,75,1 71172973 2 1 4 0 4 0 DoubleCheck=71172973,75,1 71425229 2 1 5 0 5 0 DoubleCheck=71425229,75,1 72246919 2 1 2 0 2 0 DoubleCheck=72246919,75,1 72502609 2 1 2 0 2 0 DoubleCheck=72502609,75,1 73172117 4 1 2 0 2 0 DoubleCheck=73172117,75,1 73601597 2 0 0 2 2 0 DoubleCheck=73601597,75,1 73749323 4 1 2 0 2 0 DoubleCheck=73749323,75,1 74745511 2 1 5 0 5 0 DoubleCheck=74745511,75,1 75295921 2 0 2 0 2 0 DoubleCheck=75295921,75,1 75297433 2 0 2 0 2 0 DoubleCheck=75297433,75,1 75754303 2 0 0 2 2 0 DoubleCheck=75754303,75,1 75854473 2 0 2 0 1 1 DoubleCheck=75854473,75,1 75915529 2 0 0 2 2 0 DoubleCheck=75915529,75,1 76044851 2 0 0 3 3 0 DoubleCheck=76044851,75,1 76044887 2 0 0 2 2 0 DoubleCheck=76044887,75,1 76096117 2 1 1 1 2 0 DoubleCheck=76096117,75,1 76535383 2 0 3 0 3 0 DoubleCheck=76535383,75,1 76763689 2 0 3 0 3 0 DoubleCheck=76763689,75,1 76809221 2 0 3 0 3 0 DoubleCheck=76809221,75,1 76888337 2 0 0 4 4 0 DoubleCheck=76888337,75,1 76968403 2 0 1 1 2 0 DoubleCheck=76968403,75,1 76981741 2 0 0 4 4 0 DoubleCheck=76981741,75,1 76981937 2 0 0 4 4 0 DoubleCheck=76981937,75,1 76995497 2 0 1 1 2 0 DoubleCheck=76995497,75,1 77042887 2 0 3 0 3 0 DoubleCheck=77042887,75,1 77066533 3 0 0 1 1 0 DoubleCheck=77066533,75,1 77131357 2 0 0 3 3 0 DoubleCheck=77131357,75,1 77158759 2 1 4 0 4 0 DoubleCheck=77158759,75,1 77162959 2 0 3 0 3 0 DoubleCheck=77162959,75,1 77171453 2 0 3 0 3 0 DoubleCheck=77171453,75,1 77205589 2 0 0 4 4 0 DoubleCheck=77205589,75,1 77208421 2 0 0 4 4 0 DoubleCheck=77208421,75,1 77256713 2 0 0 4 4 0 DoubleCheck=77256713,75,1 77344859 2 0 0 4 4 0 DoubleCheck=77344859,75,1 77391121 2 0 0 3 3 0 DoubleCheck=77391121,75,1 77429719 1 1 1 0 1 0 DoubleCheck=77429719,75,1 77486203 2 1 2 0 1 1 DoubleCheck=77486203,75,1 77505401 2 0 0 1 1 0 DoubleCheck=77505401,75,1 77818087 1 1 1 1 2 0 DoubleCheck=77818087,75,1 78098921 2 1 1 1 2 0 DoubleCheck=78098921,75,1 78121339 2 0 0 1 1 0 DoubleCheck=78121339,75,1 78168589 1 0 1 1 1 1 DoubleCheck=78168589,75,1 78207133 0 0 2 1 3 0 DoubleCheck=78207133,75,1 78212821 0 0 2 0 2 0 DoubleCheck=78212821,75,1 78217757 0 0 2 0 2 0 DoubleCheck=78217757,75,1 78232829 2 0 2 1 3 0 DoubleCheck=78232829,75,1 78251143 1 0 2 0 1 1 DoubleCheck=78251143,75,1 78313519 0 0 2 1 3 0 DoubleCheck=78313519,75,1 78315173 2 0 2 1 3 0 DoubleCheck=78315173,75,1 78830501 2 0 1 0 1 0 DoubleCheck=78830501,75,1 79105139 0 0 2 1 3 0 DoubleCheck=79105139,75,1 79105157 0 0 2 1 3 0 DoubleCheck=79105157,75,1 79781327 2 0 0 2 2 0 DoubleCheck=79781327,75,1 79788043 2 0 0 4 4 0 DoubleCheck=79788043,75,1 102141577 2 1 5 0 5 0 DoubleCheck=102141577,72,1
 2017-04-02, 00:56 #1385 Mark Rose     "/X\(‘-‘)/X\" Jan 2013 2,917 Posts I took everything below 54M.
 2017-04-02, 01:04 #1386 ATH Einyen     Dec 2003 Denmark 3·5·199 Posts I took: 57798409 57954781 58370549 58370563 59243747 59563531

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