Perpetual benchmark thread... - Page 51

James Heinrich · 2011-08-05, 00:05

Quote:

Originally Posted by davieddy

Nicht Wahr?

Despite an appropriate-sounding family name, what I wrote is about as much as I actually understand the language

Even with some assistance from Google, I'm not quite sure I understand what you're saying -- that FFTs have sizes, but those sizes are not measured in bytes, so I should express it as 3M, but not 3MB? If that's all, why didn't you say so?

davieddy · 2011-08-05, 00:51

Quote:

Originally Posted by James Heinrich

Despite an appropriate-sounding family name, what I wrote is about as much as I actually understand the language

Even with some assistance from Google, I'm not quite sure I understand what you're saying -- that FFTs have sizes, but those sizes are not measured in bytes, so I should express it as 3M, but not 3MB? If that's all, why didn't you say so?

That was precisely what I was saying, and hence a big deal it
of out to make I wasn't.

I passed German "O level" in 1965, and am grateful for it, although
predictably the several agreeable German volk I have met speaky Englisch
besser than I Deutch do.
Soon after we started to learn the "word order" (age~12) my best friend
and I would in Englisch that order always speak.

David

cheesehead · 2011-08-10, 12:22

Quote:

Originally Posted by davieddy

What means the "B" in "FFT size"?

David

Though James is usually spot-on, I'm afraid that this time you've spotted that he's inserted a "B" where there should not be one.

Quote:

Originally Posted by James Heinrich

Here is the actual comparison between the two CPUs. At the same clock speed (2160MHz), other than a small difference between 1MB and 3MB FFT sizes, performance is nearly identical.

Quote:

Originally Posted by James Heinrich

The only place I see "B" is in my above quote about 1MB-3MB, which would be 1024K-3072K FFT sizes (or 1048576-3145728 if you prefer), as illustrated by the attached graph.

James,

Perhaps you've momentarily forgotten that FFT sizes are customarily measured by the number of floating-point "digits" rather than bytes. (That's why the mersenne-aries site lists "768K", not "768KB", for instance, as an FFT size.)

- - -

In Prime95, the FFT "digits" are each a double-precision FP number, spanning 8 bytes.

So, in GIMPS, an FFT of size "1024K" or "1M" occupies 8MB, not 1 MB, and a "3M" FFT occupies 24MB.

If some other FFT software were using single-precision FP for "digits", there a "1M" FFT would occupy 4MB and a "3M" FFT would span 12 MB. That shows why FFT sizes are not listed in MB or KB: because then one would have to also specify the size of each FFT "digit" in order to get a proper FFT picture.

4MB would contain 1M digits of single-precision FP, but only 512K digits of double-precision FP, or only 256K digits of quad-precision FP.

James Heinrich · 2011-08-10, 13:17

Quote:

Originally Posted by cheesehead

Perhaps you've momentarily forgotten...

A nice, diplomatic way of saying I don't know of what I speak. Which in this case is entirely true.

Thanks to your cogent explanation, I now understand why I was wrong.

davieddy · 2011-08-10, 19:28

Quote:

Originally Posted by James Heinrich

A nice, diplomatic way of saying I don't know of what I speak. Which in this case is entirely true.

Thanks to your cogent explanation, I now understand why I was wrong.

These sayings into German for me please translate:

"Of which we cannot speak, we cannot know" (Wittgenstein)
"We can know. We must know" (Hilbert)
"Manuel, this wasn't a proposition from Wittgenstein: I said
GET THOSE DEAD PIGEONS OUT OF THE WATER
TANK BEFORE THE HOTEL INSPECTORS ARRIVE" (Basil Fawlty)
"That's my sunlounger. I arose earlier than you and reserved
it by placing my towel thereon". (Tourist)

(Nuff quotes for now - Ed.)

David

PS Don't think I mentioned the War or Geoff Hurst did I?
Well I may have done once, but I think I got away with it.

cheesehead · 2011-08-10, 23:03

Quote:

Originally Posted by James Heinrich

A nice, diplomatic way of saying I don't know of what I speak. Which in this case is entirely true.

Thanks to your cogent explanation, I now understand why I was wrong.

You're welcome. :-)

ciic · 2011-08-28, 14:51

Hi !
-------------------------------------------------------------------------------------------------------------------
Here's just some more perf data on the new Sandy Bridge Pentium:

Intel(R) Pentium(R) CPU G620T @ 2.20GHz 35W TDP (System ~45-55W)

[Thu Aug 4 04:25:30 2011]
Compare your results to other computers at http://www.mersenne.org/report_benchmarks
Intel(R) Pentium(R) CPU G620T @ 2.20GHz
CPU speed: 2160.98 MHz, 2 cores
CPU features: Prefetch, MMX, SSE, SSE2, SSE4
L1 cache size: 32 KB
L2 cache size: 256 KB, L3 cache size: 3 MB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
TLBS: 64
Prime95 64-bit version 26.6, RdtscTiming=1
Best time for 768K FFT length: 11.801 ms., avg: 11.817 ms.
Best time for 896K FFT length: 14.451 ms., avg: 14.473 ms.
Best time for 1024K FFT length: 15.775 ms., avg: 15.802 ms.
Best time for 1280K FFT length: 20.394 ms., avg: 20.422 ms.
Best time for 1536K FFT length: 24.889 ms., avg: 24.912 ms.
Best time for 1792K FFT length: 30.053 ms., avg: 30.067 ms.
Best time for 2048K FFT length: 33.272 ms., avg: 33.296 ms.
Best time for 2560K FFT length: 42.139 ms., avg: 42.156 ms.
Best time for 3072K FFT length: 51.821 ms., avg: 51.844 ms.
Best time for 3584K FFT length: 62.475 ms., avg: 62.494 ms.
Best time for 4096K FFT length: 70.048 ms., avg: 70.056 ms.
Best time for 5120K FFT length: 90.898 ms., avg: 90.910 ms.
Best time for 6144K FFT length: 112.647 ms., avg: 112.688 ms.
Best time for 7168K FFT length: 137.351 ms., avg: 137.421 ms.
Best time for 8192K FFT length: 148.731 ms., avg: 148.790 ms.
Timing FFTs using 2 threads.
Best time for 768K FFT length: 6.337 ms., avg: 6.366 ms.
Best time for 896K FFT length: 7.789 ms., avg: 7.807 ms.
Best time for 1024K FFT length: 8.484 ms., avg: 8.528 ms.
Best time for 1280K FFT length: 10.847 ms., avg: 10.868 ms.
Best time for 1536K FFT length: 13.067 ms., avg: 13.080 ms.
Best time for 1792K FFT length: 16.338 ms., avg: 16.372 ms.
Best time for 2048K FFT length: 17.974 ms., avg: 18.129 ms.
Best time for 2560K FFT length: 22.592 ms., avg: 22.624 ms.
Best time for 3072K FFT length: 27.876 ms., avg: 27.908 ms.
Best time for 3584K FFT length: 33.386 ms., avg: 33.512 ms.
Best time for 4096K FFT length: 36.597 ms., avg: 36.630 ms.
Best time for 5120K FFT length: 47.321 ms., avg: 47.347 ms.
Best time for 6144K FFT length: 59.132 ms., avg: 59.219 ms.
Best time for 7168K FFT length: 77.364 ms., avg: 77.638 ms.
Best time for 8192K FFT length: 78.744 ms., avg: 79.095 ms.
Best time for 61 bit trial factors: 3.599 ms.
Best time for 62 bit trial factors: 3.640 ms.
Best time for 63 bit trial factors: 4.084 ms.
Best time for 64 bit trial factors: 4.256 ms.
Best time for 65 bit trial factors: 4.954 ms.
Best time for 66 bit trial factors: 5.820 ms.
Best time for 67 bit trial factors: 5.773 ms.
Best time for 75 bit trial factors: 5.624 ms.
Best time for 76 bit trial factors: 5.610 ms.
Best time for 77 bit trial factors: 5.607 ms.
[Thu Aug 4 04:45:53 2011]
Compare your results to other computers at http://www.mersenne.org/report_benchmarks
Intel(R) Pentium(R) CPU G620T @ 2.20GHz
CPU speed: 2159.71 MHz, 2 cores
CPU features: Prefetch, MMX, SSE, SSE2, SSE4
L1 cache size: 32 KB
L2 cache size: 256 KB, L3 cache size: 3 MB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
TLBS: 64
Prime95 64-bit version 26.6, RdtscTiming=1
Best time for 768K FFT length: 11.781 ms., avg: 11.802 ms.
Best time for 896K FFT length: 14.514 ms., avg: 14.542 ms.
Best time for 1024K FFT length: 15.906 ms., avg: 15.929 ms.
Best time for 1280K FFT length: 20.630 ms., avg: 20.656 ms.
Best time for 1536K FFT length: 25.333 ms., avg: 25.360 ms.
Best time for 1792K FFT length: 30.390 ms., avg: 30.434 ms.
Best time for 2048K FFT length: 33.557 ms., avg: 33.578 ms.
Best time for 2560K FFT length: 42.977 ms., avg: 43.029 ms.
Best time for 3072K FFT length: 52.514 ms., avg: 52.534 ms.
Best time for 3584K FFT length: 63.344 ms., avg: 63.374 ms.
Best time for 4096K FFT length: 70.448 ms., avg: 70.475 ms.
Best time for 5120K FFT length: 91.047 ms., avg: 91.087 ms.
Best time for 6144K FFT length: 112.786 ms., avg: 112.865 ms.
Best time for 7168K FFT length: 136.480 ms., avg: 136.524 ms.
Best time for 8192K FFT length: 148.853 ms., avg: 148.892 ms.
Timing FFTs using 2 threads.
Best time for 768K FFT length: 6.298 ms., avg: 6.368 ms.
Best time for 896K FFT length: 7.776 ms., avg: 7.803 ms.
Best time for 1024K FFT length: 8.452 ms., avg: 8.480 ms.
Best time for 1280K FFT length: 10.881 ms., avg: 10.893 ms.
Best time for 1536K FFT length: 13.060 ms., avg: 13.086 ms.
Best time for 1792K FFT length: 16.126 ms., avg: 16.152 ms.
Best time for 2048K FFT length: 18.057 ms., avg: 18.085 ms.
Best time for 2560K FFT length: 22.595 ms., avg: 22.654 ms.
Best time for 3072K FFT length: 27.772 ms., avg: 27.859 ms.
Best time for 3584K FFT length: 33.517 ms., avg: 33.549 ms.
Best time for 4096K FFT length: 37.300 ms., avg: 37.351 ms.
Best time for 5120K FFT length: 48.189 ms., avg: 48.293 ms.
Best time for 6144K FFT length: 58.756 ms., avg: 58.806 ms.
Best time for 7168K FFT length: 80.770 ms., avg: 80.839 ms.
Best time for 8192K FFT length: 80.001 ms., avg: 80.046 ms.
Best time for 61 bit trial factors: 3.597 ms.
Best time for 62 bit trial factors: 3.638 ms.
Best time for 63 bit trial factors: 4.083 ms.
Best time for 64 bit trial factors: 4.256 ms.
Best time for 65 bit trial factors: 4.955 ms.
Best time for 66 bit trial factors: 5.817 ms.
Best time for 67 bit trial factors: 5.772 ms.
Best time for 75 bit trial factors: 5.622 ms.
Best time for 76 bit trial factors: 5.606 ms.
Best time for 77 bit trial factors: 5.616 ms.
[Thu Aug 4 04:54:47 2011]
Compare your results to other computers at http://www.mersenne.org/report_benchmarks
Intel(R) Pentium(R) CPU G620T @ 2.20GHz
CPU speed: 2160.56 MHz, 2 cores
CPU features: Prefetch, MMX, SSE, SSE2, SSE4
L1 cache size: 32 KB
L2 cache size: 256 KB, L3 cache size: 3 MB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
TLBS: 64
Prime95 64-bit version 26.6, RdtscTiming=1
Best time for 768K FFT length: 11.771 ms., avg: 11.796 ms.
Best time for 896K FFT length: 14.500 ms., avg: 14.523 ms.
Best time for 1024K FFT length: 15.912 ms., avg: 15.938 ms.
Best time for 1280K FFT length: 20.677 ms., avg: 20.692 ms.
Best time for 1536K FFT length: 25.299 ms., avg: 25.323 ms.
Best time for 1792K FFT length: 30.449 ms., avg: 30.471 ms.
Best time for 2048K FFT length: 33.537 ms., avg: 33.556 ms.
Best time for 2560K FFT length: 43.151 ms., avg: 43.161 ms.
Best time for 3072K FFT length: 52.367 ms., avg: 52.384 ms.
Best time for 3584K FFT length: 63.243 ms., avg: 63.290 ms.
Best time for 4096K FFT length: 70.376 ms., avg: 70.398 ms.
Best time for 5120K FFT length: 91.385 ms., avg: 91.410 ms.
Best time for 6144K FFT length: 111.428 ms., avg: 111.459 ms.
Best time for 7168K FFT length: 136.892 ms., avg: 136.968 ms.
Best time for 8192K FFT length: 148.951 ms., avg: 149.047 ms.
Timing FFTs using 2 threads.
Best time for 768K FFT length: 6.336 ms., avg: 6.359 ms.
Best time for 896K FFT length: 7.778 ms., avg: 7.827 ms.
Best time for 1024K FFT length: 8.479 ms., avg: 8.515 ms.
Best time for 1280K FFT length: 10.831 ms., avg: 10.948 ms.
Best time for 1536K FFT length: 13.049 ms., avg: 13.069 ms.
Best time for 1792K FFT length: 16.066 ms., avg: 16.089 ms.
Best time for 2048K FFT length: 17.947 ms., avg: 17.961 ms.
Best time for 2560K FFT length: 22.665 ms., avg: 22.689 ms.
Best time for 3072K FFT length: 27.663 ms., avg: 27.783 ms.
Best time for 3584K FFT length: 33.524 ms., avg: 33.572 ms.
Best time for 4096K FFT length: 36.449 ms., avg: 36.526 ms.
Best time for 5120K FFT length: 47.151 ms., avg: 47.301 ms.
Best time for 6144K FFT length: 59.534 ms., avg: 59.658 ms.
Best time for 7168K FFT length: 77.943 ms., avg: 77.981 ms.
Best time for 8192K FFT length: 79.611 ms., avg: 79.806 ms.
Best time for 61 bit trial factors: 3.599 ms.
Best time for 62 bit trial factors: 3.637 ms.
Best time for 63 bit trial factors: 4.083 ms.
Best time for 64 bit trial factors: 4.256 ms.
Best time for 65 bit trial factors: 4.956 ms.
Best time for 66 bit trial factors: 5.815 ms.
Best time for 67 bit trial factors: 5.773 ms.
Best time for 75 bit trial factors: 5.621 ms.
Best time for 76 bit trial factors: 5.610 ms.
Best time for 77 bit trial factors: 5.608 ms.

Think my benchmarks seem a bit faster than that of the mersenne-aries.sili.net/throughput.php webpage??

Cheers.. ciic

ciic · 2011-08-28, 15:02

Hi!
---------------------------------------------------
Found some new Wikipedia-Edits:

* http://en.wikipedia.org/wiki/Prime95

and

* http://de.wikipedia.org/wiki/Prime95

Would like some of you to comment - constructively - on them (accuracy, collum/row-titles, physical quatities & units of measurements) or even would like to appeal you for contributional edits - please.

Cheers, ciic

James Heinrich · 2011-12-16, 16:45

Some Sandy-E benchmarks:

v26.3 64-bit:

Code:

Compare your results to other computers at http://www.mersenne.org/report_benchmarks
Intel(R) Core(TM) i7-3930K CPU @ 3.20GHz
CPU speed: 4902.50 MHz, 6 hyperthreaded cores
CPU features: Prefetch, MMX, SSE, SSE2, SSE4, AVX
L1 cache size: 32 KB
L2 cache size: 256 KB, L3 cache size: 12 MB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
TLBS: 64
Prime95 64-bit version 26.6, RdtscTiming=1
Best time for 768K FFT length: 5.249 ms., avg: 5.372 ms.
Best time for 896K FFT length: 6.434 ms., avg: 6.797 ms.
Best time for 1024K FFT length: 7.101 ms., avg: 7.272 ms.
Best time for 1280K FFT length: 9.211 ms., avg: 9.615 ms.
Best time for 1536K FFT length: 11.204 ms., avg: 11.408 ms.
Best time for 1792K FFT length: 13.669 ms., avg: 13.980 ms.
Best time for 2048K FFT length: 15.108 ms., avg: 15.709 ms.
Best time for 2560K FFT length: 19.325 ms., avg: 19.803 ms.
Best time for 3072K FFT length: 23.788 ms., avg: 24.124 ms.
Best time for 3584K FFT length: 28.732 ms., avg: 29.131 ms.
Best time for 4096K FFT length: 31.759 ms., avg: 32.335 ms.
Best time for 5120K FFT length: 41.248 ms., avg: 41.896 ms.
Best time for 6144K FFT length: 51.552 ms., avg: 52.863 ms.
Best time for 7168K FFT length: 63.371 ms., avg: 64.978 ms.
Best time for 8192K FFT length: 69.446 ms., avg: 70.034 ms.
Timing FFTs using 2 threads on 1 physical CPUs.
Best time for 768K FFT length: 5.150 ms., avg: 5.271 ms.
Best time for 896K FFT length: 6.206 ms., avg: 6.267 ms.
Best time for 1024K FFT length: 6.975 ms., avg: 7.008 ms.
Best time for 1280K FFT length: 8.971 ms., avg: 9.087 ms.
Best time for 1536K FFT length: 11.051 ms., avg: 11.096 ms.
Best time for 1792K FFT length: 13.366 ms., avg: 13.421 ms.
Best time for 2048K FFT length: 15.002 ms., avg: 15.033 ms.
Best time for 2560K FFT length: 18.984 ms., avg: 19.038 ms.
Best time for 3072K FFT length: 23.587 ms., avg: 23.628 ms.
Best time for 3584K FFT length: 28.255 ms., avg: 28.329 ms.
Best time for 4096K FFT length: 31.588 ms., avg: 31.640 ms.
Best time for 5120K FFT length: 40.923 ms., avg: 40.967 ms.
Best time for 6144K FFT length: 50.793 ms., avg: 51.226 ms.
Best time for 7168K FFT length: 59.152 ms., avg: 59.181 ms.
Best time for 8192K FFT length: 66.920 ms., avg: 67.097 ms.
Timing FFTs using 4 threads on 2 physical CPUs.
Best time for 768K FFT length: 2.663 ms., avg: 2.741 ms.
Best time for 896K FFT length: 3.235 ms., avg: 3.252 ms.
Best time for 1024K FFT length: 3.630 ms., avg: 3.985 ms.
Best time for 1280K FFT length: 4.670 ms., avg: 4.787 ms.
Best time for 1536K FFT length: 5.688 ms., avg: 5.759 ms.
Best time for 1792K FFT length: 6.940 ms., avg: 6.981 ms.
Best time for 2048K FFT length: 7.805 ms., avg: 7.824 ms.
Best time for 2560K FFT length: 9.868 ms., avg: 9.896 ms.
Best time for 3072K FFT length: 12.214 ms., avg: 12.257 ms.
Best time for 3584K FFT length: 14.579 ms., avg: 14.602 ms.
Best time for 4096K FFT length: 16.381 ms., avg: 16.442 ms.
Best time for 5120K FFT length: 21.108 ms., avg: 21.162 ms.
Best time for 6144K FFT length: 26.151 ms., avg: 26.263 ms.
Best time for 7168K FFT length: 30.675 ms., avg: 30.770 ms.
Best time for 8192K FFT length: 34.609 ms., avg: 35.164 ms.
Timing FFTs using 6 threads on 3 physical CPUs.
Best time for 768K FFT length: 2.004 ms., avg: 2.254 ms.
Best time for 896K FFT length: 2.229 ms., avg: 2.240 ms.
Best time for 1024K FFT length: 2.771 ms., avg: 3.001 ms.
Best time for 1280K FFT length: 3.298 ms., avg: 3.424 ms.
Best time for 1536K FFT length: 3.990 ms., avg: 4.050 ms.
Best time for 1792K FFT length: 4.802 ms., avg: 5.015 ms.
Best time for 2048K FFT length: 5.409 ms., avg: 5.432 ms.
Best time for 2560K FFT length: 6.825 ms., avg: 6.937 ms.
Best time for 3072K FFT length: 8.378 ms., avg: 8.816 ms.
Best time for 3584K FFT length: 9.979 ms., avg: 10.013 ms.
Best time for 4096K FFT length: 11.182 ms., avg: 11.218 ms.
Best time for 5120K FFT length: 14.448 ms., avg: 14.647 ms.
Best time for 6144K FFT length: 17.762 ms., avg: 18.054 ms.
Best time for 7168K FFT length: 21.398 ms., avg: 21.788 ms.
Best time for 8192K FFT length: 23.608 ms., avg: 24.434 ms.
Timing FFTs using 8 threads on 4 physical CPUs.
Best time for 768K FFT length: 1.775 ms., avg: 1.934 ms.
Best time for 896K FFT length: 1.744 ms., avg: 1.782 ms.
Best time for 1024K FFT length: 2.445 ms., avg: 2.479 ms.
Best time for 1280K FFT length: 2.880 ms., avg: 3.749 ms.
Best time for 1536K FFT length: 3.403 ms., avg: 3.427 ms.
Best time for 1792K FFT length: 3.717 ms., avg: 3.894 ms.
Best time for 2048K FFT length: 4.282 ms., avg: 4.655 ms.
Best time for 2560K FFT length: 5.603 ms., avg: 5.638 ms.
Best time for 3072K FFT length: 6.641 ms., avg: 6.824 ms.
Best time for 3584K FFT length: 7.756 ms., avg: 7.806 ms.
Best time for 4096K FFT length: 8.872 ms., avg: 9.270 ms.
Best time for 5120K FFT length: 11.347 ms., avg: 12.227 ms.
Best time for 6144K FFT length: 14.006 ms., avg: 14.029 ms.
Best time for 7168K FFT length: 17.100 ms., avg: 17.281 ms.
Best time for 8192K FFT length: 18.540 ms., avg: 18.695 ms.
Timing FFTs using 10 threads on 5 physical CPUs.
Best time for 768K FFT length: 1.665 ms., avg: 1.882 ms.
Best time for 896K FFT length: 1.613 ms., avg: 1.627 ms.
Best time for 1024K FFT length: 2.284 ms., avg: 2.684 ms.
Best time for 1280K FFT length: 2.687 ms., avg: 2.723 ms.
Best time for 1536K FFT length: 3.174 ms., avg: 3.898 ms.
Best time for 1792K FFT length: 3.428 ms., avg: 3.860 ms.
Best time for 2048K FFT length: 4.033 ms., avg: 4.343 ms.
Best time for 2560K FFT length: 5.202 ms., avg: 6.459 ms.
Best time for 3072K FFT length: 6.246 ms., avg: 7.263 ms.
Best time for 3584K FFT length: 7.092 ms., avg: 7.355 ms.
Best time for 4096K FFT length: 8.392 ms., avg: 8.579 ms.
Best time for 5120K FFT length: 10.516 ms., avg: 12.441 ms.
Best time for 6144K FFT length: 12.917 ms., avg: 15.059 ms.
Best time for 7168K FFT length: 15.478 ms., avg: 15.564 ms.
Best time for 8192K FFT length: 17.182 ms., avg: 17.832 ms.
Timing FFTs using 12 threads on 6 physical CPUs.
Best time for 768K FFT length: 1.572 ms., avg: 1.849 ms.
Best time for 896K FFT length: 1.536 ms., avg: 1.605 ms.
Best time for 1024K FFT length: 2.178 ms., avg: 2.451 ms.
Best time for 1280K FFT length: 2.575 ms., avg: 2.907 ms.
Best time for 1536K FFT length: 3.001 ms., avg: 3.316 ms.
Best time for 1792K FFT length: 3.294 ms., avg: 3.962 ms.
Best time for 2048K FFT length: 3.877 ms., avg: 3.973 ms.
Best time for 2560K FFT length: 4.992 ms., avg: 5.436 ms.
Best time for 3072K FFT length: 5.927 ms., avg: 6.781 ms.
Best time for 3584K FFT length: 6.951 ms., avg: 7.774 ms.
Best time for 4096K FFT length: 7.927 ms., avg: 10.767 ms.
Best time for 5120K FFT length: 10.002 ms., avg: 10.090 ms.
Best time for 6144K FFT length: 12.233 ms., avg: 12.538 ms.
Best time for 7168K FFT length: 17.659 ms., avg: 18.278 ms.
Best time for 8192K FFT length: 16.496 ms., avg: 20.024 ms.
Best time for 61 bit trial factors: 1.574 ms.
Best time for 62 bit trial factors: 1.587 ms.
Best time for 63 bit trial factors: 1.794 ms.
Best time for 64 bit trial factors: 1.862 ms.
Best time for 65 bit trial factors: 2.180 ms.
Best time for 66 bit trial factors: 2.576 ms.
Best time for 67 bit trial factors: 2.547 ms.
Best time for 75 bit trial factors: 2.481 ms.
Best time for 76 bit trial factors: 2.479 ms.
Best time for 77 bit trial factors: 2.476 ms.

James Heinrich · 2011-12-16, 16:47

v27.1 32-bit:

Code:

[Fri Dec 16 10:36:06 2011]
Compare your results to other computers at http://www.mersenne.org/report_benchmarks
Intel(R) Core(TM) i7-3930K CPU @ 3.20GHz
CPU speed: 4902.50 MHz, 6 hyperthreaded cores
CPU features: Prefetch, MMX, SSE, SSE2, SSE4, AVX
L1 cache size: 32 KB
L2 cache size: 256 KB, L3 cache size: 12 MB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
TLBS: 64
Prime95 32-bit version 27.1, RdtscTiming=1
Best time for 768K FFT length: 3.677 ms., avg: 3.760 ms.
Best time for 1024K FFT length: 5.186 ms., avg: 5.267 ms.
Best time for 1280K FFT length: 6.910 ms., avg: 7.204 ms.
Best time for 1536K FFT length: 8.306 ms., avg: 8.447 ms.
Best time for 2048K FFT length: 11.293 ms., avg: 11.723 ms.
Best time for 2560K FFT length: 14.685 ms., avg: 14.878 ms.
Best time for 3072K FFT length: 17.964 ms., avg: 18.225 ms.
Best time for 4096K FFT length: 26.006 ms., avg: 26.514 ms.
Best time for 5120K FFT length: 32.573 ms., avg: 33.259 ms.
Best time for 6144K FFT length: 38.950 ms., avg: 39.090 ms.
Best time for 8192K FFT length: 54.119 ms., avg: 55.810 ms.
Timing FFTs using 2 threads on 1 physical CPUs.
Best time for 768K FFT length: 4.128 ms., avg: 4.139 ms.
Best time for 1024K FFT length: 5.534 ms., avg: 5.575 ms.
Best time for 1280K FFT length: 7.372 ms., avg: 7.525 ms.
Best time for 1536K FFT length: 8.963 ms., avg: 9.026 ms.
Best time for 2048K FFT length: 12.040 ms., avg: 12.236 ms.
Best time for 2560K FFT length: 15.943 ms., avg: 16.192 ms.
Best time for 3072K FFT length: 19.521 ms., avg: 19.635 ms.
Best time for 4096K FFT length: 28.020 ms., avg: 28.191 ms.
Best time for 5120K FFT length: 34.828 ms., avg: 35.223 ms.
Best time for 6144K FFT length: 42.825 ms., avg: 43.272 ms.
Best time for 8192K FFT length: 57.334 ms., avg: 57.615 ms.
Timing FFTs using 4 threads on 2 physical CPUs.
Best time for 768K FFT length: 3.069 ms., avg: 3.460 ms.
Best time for 1024K FFT length: 4.057 ms., avg: 4.234 ms.
Best time for 1280K FFT length: 5.331 ms., avg: 5.898 ms.
Best time for 1536K FFT length: 5.438 ms., avg: 5.505 ms.
Best time for 2048K FFT length: 6.870 ms., avg: 7.100 ms.
Best time for 2560K FFT length: 8.982 ms., avg: 9.064 ms.
Best time for 3072K FFT length: 10.922 ms., avg: 11.323 ms.
Best time for 4096K FFT length: 15.655 ms., avg: 15.923 ms.
Best time for 5120K FFT length: 19.384 ms., avg: 19.493 ms.
Best time for 6144K FFT length: 23.860 ms., avg: 24.282 ms.
Best time for 8192K FFT length: 32.104 ms., avg: 32.649 ms.
Timing FFTs using 6 threads on 3 physical CPUs.
Best time for 768K FFT length: 2.762 ms., avg: 2.879 ms.
Best time for 1024K FFT length: 3.664 ms., avg: 4.008 ms.
Best time for 1280K FFT length: 4.748 ms., avg: 5.452 ms.
Best time for 1536K FFT length: 4.778 ms., avg: 5.322 ms.
Best time for 2048K FFT length: 5.758 ms., avg: 5.887 ms.
Best time for 2560K FFT length: 7.476 ms., avg: 7.697 ms.
Best time for 3072K FFT length: 8.956 ms., avg: 10.168 ms.
Best time for 4096K FFT length: 12.729 ms., avg: 14.813 ms.
Best time for 5120K FFT length: 15.632 ms., avg: 17.910 ms.
Best time for 6144K FFT length: 19.205 ms., avg: 20.806 ms.
Best time for 8192K FFT length: 25.762 ms., avg: 28.414 ms.
Timing FFTs using 8 threads on 4 physical CPUs.
Best time for 768K FFT length: 2.577 ms., avg: 3.193 ms.
Best time for 1024K FFT length: 3.483 ms., avg: 4.013 ms.
Best time for 1280K FFT length: 4.511 ms., avg: 5.158 ms.
Best time for 1536K FFT length: 4.490 ms., avg: 4.824 ms.
Best time for 2048K FFT length: 5.361 ms., avg: 6.380 ms.
Best time for 2560K FFT length: 6.916 ms., avg: 7.287 ms.
Best time for 3072K FFT length: 8.313 ms., avg: 9.672 ms.
Best time for 4096K FFT length: 11.683 ms., avg: 13.380 ms.
Best time for 5120K FFT length: 14.410 ms., avg: 15.375 ms.
Best time for 6144K FFT length: 17.554 ms., avg: 18.603 ms.
Best time for 8192K FFT length: 23.688 ms., avg: 27.285 ms.
Timing FFTs using 10 threads on 5 physical CPUs.
Best time for 768K FFT length: 2.478 ms., avg: 2.701 ms.
Best time for 1024K FFT length: 3.347 ms., avg: 3.571 ms.
Best time for 1280K FFT length: 4.310 ms., avg: 4.446 ms.
Best time for 1536K FFT length: 4.316 ms., avg: 5.180 ms.
Best time for 2048K FFT length: 5.132 ms., avg: 5.437 ms.
Best time for 2560K FFT length: 6.579 ms., avg: 7.673 ms.
Best time for 3072K FFT length: 7.893 ms., avg: 8.491 ms.
Best time for 4096K FFT length: 11.130 ms., avg: 13.262 ms.
Best time for 5120K FFT length: 13.623 ms., avg: 16.028 ms.
Best time for 6144K FFT length: 16.623 ms., avg: 16.670 ms.
Best time for 8192K FFT length: 22.197 ms., avg: 23.030 ms.
Timing FFTs using 12 threads on 6 physical CPUs.
Best time for 768K FFT length: 2.428 ms., avg: 2.933 ms.
Best time for 1024K FFT length: 3.282 ms., avg: 3.673 ms.
Best time for 1280K FFT length: 4.194 ms., avg: 4.492 ms.
Best time for 1536K FFT length: 4.208 ms., avg: 4.904 ms.
Best time for 2048K FFT length: 4.985 ms., avg: 5.005 ms.
Best time for 2560K FFT length: 6.359 ms., avg: 6.488 ms.
Best time for 3072K FFT length: 7.679 ms., avg: 8.297 ms.
Best time for 4096K FFT length: 10.776 ms., avg: 11.733 ms.
Best time for 5120K FFT length: 13.139 ms., avg: 15.356 ms.
Best time for 6144K FFT length: 16.029 ms., avg: 16.111 ms.
Best time for 8192K FFT length: 21.620 ms., avg: 22.925 ms.
Best time for 61 bit trial factors: 1.990 ms.
Best time for 62 bit trial factors: 1.991 ms.
Best time for 63 bit trial factors: 3.223 ms.
Best time for 64 bit trial factors: 3.235 ms.
Best time for 65 bit trial factors: 3.271 ms.
Best time for 66 bit trial factors: 3.251 ms.
Best time for 67 bit trial factors: 3.252 ms.
Best time for 75 bit trial factors: 3.413 ms.
Best time for 76 bit trial factors: 3.412 ms.
Best time for 77 bit trial factors: 3.407 ms.

Note, for both the detected CPU speed was off a little, but monitored CPU speed varied between 4900 and 4910 during both tests, and 90% of the time at 4902.5

Dubslow · 2011-12-16, 22:37

It still seems that small FFT's do not parallelize well in AVX.

(Someone else posted the same in the v27 thread.)

2011-08-28, 14:51	#557
ciic May 2011 FR Germany - Berlin 1110₂ Posts	MPrime perf data :: Intel Pentium G620T @ 2.20GHz Hi ! ------------------------------------------------------------------------------------------------------------------- Here's just some more perf data on the new Sandy Bridge Pentium: Intel(R) Pentium(R) CPU G620T @ 2.20GHz 35W TDP (System ~45-55W) [Thu Aug 4 04:25:30 2011] Compare your results to other computers at http://www.mersenne.org/report_benchmarks Intel(R) Pentium(R) CPU G620T @ 2.20GHz CPU speed: 2160.98 MHz, 2 cores CPU features: Prefetch, MMX, SSE, SSE2, SSE4 L1 cache size: 32 KB L2 cache size: 256 KB, L3 cache size: 3 MB L1 cache line size: 64 bytes L2 cache line size: 64 bytes TLBS: 64 Prime95 64-bit version 26.6, RdtscTiming=1 Best time for 768K FFT length: 11.801 ms., avg: 11.817 ms. Best time for 896K FFT length: 14.451 ms., avg: 14.473 ms. Best time for 1024K FFT length: 15.775 ms., avg: 15.802 ms. Best time for 1280K FFT length: 20.394 ms., avg: 20.422 ms. Best time for 1536K FFT length: 24.889 ms., avg: 24.912 ms. Best time for 1792K FFT length: 30.053 ms., avg: 30.067 ms. Best time for 2048K FFT length: 33.272 ms., avg: 33.296 ms. Best time for 2560K FFT length: 42.139 ms., avg: 42.156 ms. Best time for 3072K FFT length: 51.821 ms., avg: 51.844 ms. Best time for 3584K FFT length: 62.475 ms., avg: 62.494 ms. Best time for 4096K FFT length: 70.048 ms., avg: 70.056 ms. Best time for 5120K FFT length: 90.898 ms., avg: 90.910 ms. Best time for 6144K FFT length: 112.647 ms., avg: 112.688 ms. Best time for 7168K FFT length: 137.351 ms., avg: 137.421 ms. Best time for 8192K FFT length: 148.731 ms., avg: 148.790 ms. Timing FFTs using 2 threads. Best time for 768K FFT length: 6.337 ms., avg: 6.366 ms. Best time for 896K FFT length: 7.789 ms., avg: 7.807 ms. Best time for 1024K FFT length: 8.484 ms., avg: 8.528 ms. Best time for 1280K FFT length: 10.847 ms., avg: 10.868 ms. Best time for 1536K FFT length: 13.067 ms., avg: 13.080 ms. Best time for 1792K FFT length: 16.338 ms., avg: 16.372 ms. Best time for 2048K FFT length: 17.974 ms., avg: 18.129 ms. Best time for 2560K FFT length: 22.592 ms., avg: 22.624 ms. Best time for 3072K FFT length: 27.876 ms., avg: 27.908 ms. Best time for 3584K FFT length: 33.386 ms., avg: 33.512 ms. Best time for 4096K FFT length: 36.597 ms., avg: 36.630 ms. Best time for 5120K FFT length: 47.321 ms., avg: 47.347 ms. Best time for 6144K FFT length: 59.132 ms., avg: 59.219 ms. Best time for 7168K FFT length: 77.364 ms., avg: 77.638 ms. Best time for 8192K FFT length: 78.744 ms., avg: 79.095 ms. Best time for 61 bit trial factors: 3.599 ms. Best time for 62 bit trial factors: 3.640 ms. Best time for 63 bit trial factors: 4.084 ms. Best time for 64 bit trial factors: 4.256 ms. Best time for 65 bit trial factors: 4.954 ms. Best time for 66 bit trial factors: 5.820 ms. Best time for 67 bit trial factors: 5.773 ms. Best time for 75 bit trial factors: 5.624 ms. Best time for 76 bit trial factors: 5.610 ms. Best time for 77 bit trial factors: 5.607 ms. [Thu Aug 4 04:45:53 2011] Compare your results to other computers at http://www.mersenne.org/report_benchmarks Intel(R) Pentium(R) CPU G620T @ 2.20GHz CPU speed: 2159.71 MHz, 2 cores CPU features: Prefetch, MMX, SSE, SSE2, SSE4 L1 cache size: 32 KB L2 cache size: 256 KB, L3 cache size: 3 MB L1 cache line size: 64 bytes L2 cache line size: 64 bytes TLBS: 64 Prime95 64-bit version 26.6, RdtscTiming=1 Best time for 768K FFT length: 11.781 ms., avg: 11.802 ms. Best time for 896K FFT length: 14.514 ms., avg: 14.542 ms. Best time for 1024K FFT length: 15.906 ms., avg: 15.929 ms. Best time for 1280K FFT length: 20.630 ms., avg: 20.656 ms. Best time for 1536K FFT length: 25.333 ms., avg: 25.360 ms. Best time for 1792K FFT length: 30.390 ms., avg: 30.434 ms. Best time for 2048K FFT length: 33.557 ms., avg: 33.578 ms. Best time for 2560K FFT length: 42.977 ms., avg: 43.029 ms. Best time for 3072K FFT length: 52.514 ms., avg: 52.534 ms. Best time for 3584K FFT length: 63.344 ms., avg: 63.374 ms. Best time for 4096K FFT length: 70.448 ms., avg: 70.475 ms. Best time for 5120K FFT length: 91.047 ms., avg: 91.087 ms. Best time for 6144K FFT length: 112.786 ms., avg: 112.865 ms. Best time for 7168K FFT length: 136.480 ms., avg: 136.524 ms. Best time for 8192K FFT length: 148.853 ms., avg: 148.892 ms. Timing FFTs using 2 threads. Best time for 768K FFT length: 6.298 ms., avg: 6.368 ms. Best time for 896K FFT length: 7.776 ms., avg: 7.803 ms. Best time for 1024K FFT length: 8.452 ms., avg: 8.480 ms. Best time for 1280K FFT length: 10.881 ms., avg: 10.893 ms. Best time for 1536K FFT length: 13.060 ms., avg: 13.086 ms. Best time for 1792K FFT length: 16.126 ms., avg: 16.152 ms. Best time for 2048K FFT length: 18.057 ms., avg: 18.085 ms. Best time for 2560K FFT length: 22.595 ms., avg: 22.654 ms. Best time for 3072K FFT length: 27.772 ms., avg: 27.859 ms. Best time for 3584K FFT length: 33.517 ms., avg: 33.549 ms. Best time for 4096K FFT length: 37.300 ms., avg: 37.351 ms. Best time for 5120K FFT length: 48.189 ms., avg: 48.293 ms. Best time for 6144K FFT length: 58.756 ms., avg: 58.806 ms. Best time for 7168K FFT length: 80.770 ms., avg: 80.839 ms. Best time for 8192K FFT length: 80.001 ms., avg: 80.046 ms. Best time for 61 bit trial factors: 3.597 ms. Best time for 62 bit trial factors: 3.638 ms. Best time for 63 bit trial factors: 4.083 ms. Best time for 64 bit trial factors: 4.256 ms. Best time for 65 bit trial factors: 4.955 ms. Best time for 66 bit trial factors: 5.817 ms. Best time for 67 bit trial factors: 5.772 ms. Best time for 75 bit trial factors: 5.622 ms. Best time for 76 bit trial factors: 5.606 ms. Best time for 77 bit trial factors: 5.616 ms. [Thu Aug 4 04:54:47 2011] Compare your results to other computers at http://www.mersenne.org/report_benchmarks Intel(R) Pentium(R) CPU G620T @ 2.20GHz CPU speed: 2160.56 MHz, 2 cores CPU features: Prefetch, MMX, SSE, SSE2, SSE4 L1 cache size: 32 KB L2 cache size: 256 KB, L3 cache size: 3 MB L1 cache line size: 64 bytes L2 cache line size: 64 bytes TLBS: 64 Prime95 64-bit version 26.6, RdtscTiming=1 Best time for 768K FFT length: 11.771 ms., avg: 11.796 ms. Best time for 896K FFT length: 14.500 ms., avg: 14.523 ms. Best time for 1024K FFT length: 15.912 ms., avg: 15.938 ms. Best time for 1280K FFT length: 20.677 ms., avg: 20.692 ms. Best time for 1536K FFT length: 25.299 ms., avg: 25.323 ms. Best time for 1792K FFT length: 30.449 ms., avg: 30.471 ms. Best time for 2048K FFT length: 33.537 ms., avg: 33.556 ms. Best time for 2560K FFT length: 43.151 ms., avg: 43.161 ms. Best time for 3072K FFT length: 52.367 ms., avg: 52.384 ms. Best time for 3584K FFT length: 63.243 ms., avg: 63.290 ms. Best time for 4096K FFT length: 70.376 ms., avg: 70.398 ms. Best time for 5120K FFT length: 91.385 ms., avg: 91.410 ms. Best time for 6144K FFT length: 111.428 ms., avg: 111.459 ms. Best time for 7168K FFT length: 136.892 ms., avg: 136.968 ms. Best time for 8192K FFT length: 148.951 ms., avg: 149.047 ms. Timing FFTs using 2 threads. Best time for 768K FFT length: 6.336 ms., avg: 6.359 ms. Best time for 896K FFT length: 7.778 ms., avg: 7.827 ms. Best time for 1024K FFT length: 8.479 ms., avg: 8.515 ms. Best time for 1280K FFT length: 10.831 ms., avg: 10.948 ms. Best time for 1536K FFT length: 13.049 ms., avg: 13.069 ms. Best time for 1792K FFT length: 16.066 ms., avg: 16.089 ms. Best time for 2048K FFT length: 17.947 ms., avg: 17.961 ms. Best time for 2560K FFT length: 22.665 ms., avg: 22.689 ms. Best time for 3072K FFT length: 27.663 ms., avg: 27.783 ms. Best time for 3584K FFT length: 33.524 ms., avg: 33.572 ms. Best time for 4096K FFT length: 36.449 ms., avg: 36.526 ms. Best time for 5120K FFT length: 47.151 ms., avg: 47.301 ms. Best time for 6144K FFT length: 59.534 ms., avg: 59.658 ms. Best time for 7168K FFT length: 77.943 ms., avg: 77.981 ms. Best time for 8192K FFT length: 79.611 ms., avg: 79.806 ms. Best time for 61 bit trial factors: 3.599 ms. Best time for 62 bit trial factors: 3.637 ms. Best time for 63 bit trial factors: 4.083 ms. Best time for 64 bit trial factors: 4.256 ms. Best time for 65 bit trial factors: 4.956 ms. Best time for 66 bit trial factors: 5.815 ms. Best time for 67 bit trial factors: 5.773 ms. Best time for 75 bit trial factors: 5.621 ms. Best time for 76 bit trial factors: 5.610 ms. Best time for 77 bit trial factors: 5.608 ms. Think my benchmarks seem a bit faster than that of the mersenne-aries.sili.net/throughput.php webpage?? Cheers.. ciic

2011-08-28, 15:02	#558
ciic May 2011 FR Germany - Berlin 2·7 Posts	Wikipedia Edits: Prime95 Hi! --------------------------------------------------- Found some new Wikipedia-Edits: * http://en.wikipedia.org/wiki/Prime95 and * http://de.wikipedia.org/wiki/Prime95 Would like some of you to comment - constructively - on them (accuracy, collum/row-titles, physical quatities & units of measurements) or even would like to appeal you for contributional edits - please. Cheers, ciic

2011-12-16, 22:37	#561
Dubslow Basketry That Evening! "Bunslow the Bold" Jun 2011 40<A<43 -89<O<-88 3·29·83 Posts	It still seems that small FFT's do not parallelize well in AVX. (Someone else posted the same in the v27 thread.) Last fiddled with by Dubslow on 2011-12-16 at 22:37

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