Prime95 version 27.3 - Page 4

James Heinrich · 2012-02-17, 18:01

Quote:

Originally Posted by Ralf Recker

What is your mainboard type / BIOS version?

Asus P9X79 PRO, BIOS v0802

Quote:

Originally Posted by Ralf Recker

If you post your CPUID (you can look it up with CPU-Z or a similar tool) George might be able to use the information to improve the CPU detection.

CPU-Z screenshot attached.

Quote:

Originally Posted by Zero

JH, it would be interesting to see your results with HT disabled.

Faster:

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: 4425.82 MHz, 6 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 27.3, RdtscTiming=1
Best time for 768K FFT length: 3.489 ms., avg: 3.518 ms.
Best time for 896K FFT length: 4.176 ms., avg: 4.653 ms.
Best time for 1024K FFT length: 4.750 ms., avg: 4.867 ms.
Best time for 1280K FFT length: 6.127 ms., avg: 6.862 ms.
Best time for 1536K FFT length: 7.589 ms., avg: 8.131 ms.
Best time for 1792K FFT length: 9.277 ms., avg: 9.828 ms.
Best time for 2048K FFT length: 10.422 ms., avg: 10.728 ms.
Best time for 2560K FFT length: 13.317 ms., avg: 14.179 ms.
Best time for 3072K FFT length: 16.633 ms., avg: 17.080 ms.
Best time for 3584K FFT length: 20.201 ms., avg: 20.543 ms.
Best time for 4096K FFT length: 22.846 ms., avg: 23.072 ms.
Best time for 5120K FFT length: 30.047 ms., avg: 31.448 ms.
Best time for 6144K FFT length: 36.142 ms., avg: 38.056 ms.
Best time for 7168K FFT length: 43.865 ms., avg: 44.438 ms.
Best time for 8192K FFT length: 50.945 ms., avg: 51.268 ms.
Timing FFTs using 2 threads.
Best time for 768K FFT length: 1.964 ms., avg: 2.017 ms.
Best time for 896K FFT length: 2.268 ms., avg: 2.521 ms.
Best time for 1024K FFT length: 2.570 ms., avg: 2.840 ms.
Best time for 1280K FFT length: 3.346 ms., avg: 3.861 ms.
Best time for 1536K FFT length: 4.126 ms., avg: 4.513 ms.
Best time for 1792K FFT length: 4.986 ms., avg: 5.269 ms.
Best time for 2048K FFT length: 5.590 ms., avg: 5.960 ms.
Best time for 2560K FFT length: 7.147 ms., avg: 7.247 ms.
Best time for 3072K FFT length: 8.904 ms., avg: 10.948 ms.
Best time for 3584K FFT length: 10.938 ms., avg: 11.665 ms.
Best time for 4096K FFT length: 12.223 ms., avg: 12.343 ms.
Best time for 5120K FFT length: 15.972 ms., avg: 17.223 ms.
Best time for 6144K FFT length: 19.084 ms., avg: 19.621 ms.
Best time for 7168K FFT length: 23.257 ms., avg: 23.906 ms.
Best time for 8192K FFT length: 27.104 ms., avg: 27.206 ms.
Timing FFTs using 3 threads.
Best time for 768K FFT length: 1.356 ms., avg: 1.397 ms.
Best time for 896K FFT length: 1.585 ms., avg: 1.637 ms.
Best time for 1024K FFT length: 1.781 ms., avg: 1.871 ms.
Best time for 1280K FFT length: 2.300 ms., avg: 2.585 ms.
Best time for 1536K FFT length: 2.898 ms., avg: 3.237 ms.
Best time for 1792K FFT length: 3.532 ms., avg: 4.807 ms.
Best time for 2048K FFT length: 3.944 ms., avg: 5.175 ms.
Best time for 2560K FFT length: 4.980 ms., avg: 8.678 ms.
Best time for 3072K FFT length: 6.210 ms., avg: 7.212 ms.
Best time for 3584K FFT length: 7.864 ms., avg: 8.434 ms.
Best time for 4096K FFT length: 8.591 ms., avg: 9.051 ms.
Best time for 5120K FFT length: 11.160 ms., avg: 12.002 ms.
Best time for 6144K FFT length: 13.168 ms., avg: 14.839 ms.
Best time for 7168K FFT length: 15.991 ms., avg: 16.532 ms.
Best time for 8192K FFT length: 18.811 ms., avg: 20.220 ms.
Timing FFTs using 4 threads.
Best time for 768K FFT length: 1.289 ms., avg: 1.306 ms.
Best time for 896K FFT length: 1.517 ms., avg: 1.603 ms.
Best time for 1024K FFT length: 1.697 ms., avg: 1.795 ms.
Best time for 1280K FFT length: 2.191 ms., avg: 2.825 ms.
Best time for 1536K FFT length: 2.660 ms., avg: 3.394 ms.
Best time for 1792K FFT length: 3.196 ms., avg: 3.266 ms.
Best time for 2048K FFT length: 3.531 ms., avg: 3.884 ms.
Best time for 2560K FFT length: 4.483 ms., avg: 4.571 ms.
Best time for 3072K FFT length: 5.494 ms., avg: 6.034 ms.
Best time for 3584K FFT length: 6.751 ms., avg: 7.105 ms.
Best time for 4096K FFT length: 7.544 ms., avg: 9.167 ms.
Best time for 5120K FFT length: 8.947 ms., avg: 9.108 ms.
Best time for 6144K FFT length: 10.688 ms., avg: 12.479 ms.
Best time for 7168K FFT length: 12.787 ms., avg: 13.099 ms.
Best time for 8192K FFT length: 16.064 ms., avg: 18.325 ms.
Timing FFTs using 5 threads.
Best time for 768K FFT length: 1.201 ms., avg: 1.218 ms.
Best time for 896K FFT length: 1.457 ms., avg: 1.708 ms.
Best time for 1024K FFT length: 1.615 ms., avg: 1.642 ms.
Best time for 1280K FFT length: 2.070 ms., avg: 2.183 ms.
Best time for 1536K FFT length: 2.499 ms., avg: 2.537 ms.
Best time for 1792K FFT length: 3.035 ms., avg: 3.092 ms.
Best time for 2048K FFT length: 3.354 ms., avg: 3.414 ms.
Best time for 2560K FFT length: 4.285 ms., avg: 4.558 ms.
Best time for 3072K FFT length: 5.231 ms., avg: 5.284 ms.
Best time for 3584K FFT length: 6.474 ms., avg: 6.568 ms.
Best time for 4096K FFT length: 7.195 ms., avg: 7.287 ms.
Best time for 5120K FFT length: 8.379 ms., avg: 10.145 ms.
Best time for 6144K FFT length: 9.583 ms., avg: 10.677 ms.
Best time for 7168K FFT length: 11.155 ms., avg: 12.152 ms.
Best time for 8192K FFT length: 15.262 ms., avg: 17.920 ms.
Timing FFTs using 6 threads.
Best time for 768K FFT length: 1.145 ms., avg: 1.161 ms.
Best time for 896K FFT length: 1.383 ms., avg: 1.403 ms.
Best time for 1024K FFT length: 1.538 ms., avg: 1.562 ms.
Best time for 1280K FFT length: 1.965 ms., avg: 1.998 ms.
Best time for 1536K FFT length: 2.390 ms., avg: 2.445 ms.
Best time for 1792K FFT length: 2.918 ms., avg: 3.389 ms.
Best time for 2048K FFT length: 3.234 ms., avg: 3.581 ms.
Best time for 2560K FFT length: 4.163 ms., avg: 4.245 ms.
Best time for 3072K FFT length: 5.088 ms., avg: 5.615 ms.
Best time for 3584K FFT length: 6.297 ms., avg: 6.394 ms.
Best time for 4096K FFT length: 6.991 ms., avg: 7.393 ms.
Best time for 5120K FFT length: 8.213 ms., avg: 8.400 ms.
Best time for 6144K FFT length: 9.420 ms., avg: 10.439 ms.
Best time for 7168K FFT length: 10.742 ms., avg: 11.658 ms.
Best time for 8192K FFT length: 14.644 ms., avg: 17.097 ms.
Best time for 61 bit trial factors: 1.716 ms.
Best time for 62 bit trial factors: 1.718 ms.
Best time for 63 bit trial factors: 1.958 ms.
Best time for 64 bit trial factors: 2.031 ms.
Best time for 65 bit trial factors: 2.371 ms.
Best time for 66 bit trial factors: 2.808 ms.
Best time for 67 bit trial factors: 2.777 ms.
Best time for 75 bit trial factors: 2.701 ms.
Best time for 76 bit trial factors: 2.701 ms.
Best time for 77 bit trial factors: 2.707 ms.

James Heinrich · 2012-02-17, 18:15

Quote:

Originally Posted by Prime95

That is correct. James, try adding "TimingOutput=4" to prime.txt. Restart aand run just one worker. Note the per-iteration times. Now start the second worker, note times, etc.. Do the workers slow down a lot?

On my machine (all workers running 2400K FFTs), I get times of 1 worker - 13.7ms, 2 workers - 13.9ms, 3 workers - 14.5ms, 4 workers - 16.6ms.

With hyperthreading disabled:

Quote:

Resuming primality test of M44789989 using AVX Core2 type-3 FFT length 2400K, Pass1=384, Pass2=6400

1: 12.8ms
2: 13.2ms
3: 13.6ms
4: 14.8ms
5: 16.7ms
6: ~19ms (ranges from 18.3 to 21.1 in different workers)

flashjh · 2012-02-17, 18:22

Quote:

Originally Posted by Prime95

Grrrr. Does Options/CPU identify the chip as supporting AVX?

If not, can you add the line "CpuSupportsAVX=1" to local.ini and let me know if your benchmarks indicate prime95 runs faster with AVX vs. v26 using SSE2? Thanks.

I have a dual Opteron 6272 (Bulldozer) system. Doesn't work. Here is what happens with benchmark:

Code:

 
[Feb 17 11:17] Worker starting
[Feb 17 11:17] Your timings will be written to the results.txt file.
[Feb 17 11:17] Compare your results to other computers at http://www.mersenne.org/report_benchmarks
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 2 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 3 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 4 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 5 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 6 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 7 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 8 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 9 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 10 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 11 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 12 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 13 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 14 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 15 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 16 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 17 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 18 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 19 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 20 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 21 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 22 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 23 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 24 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 25 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 26 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 27 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 28 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 29 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 30 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 31 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing FFTs using 32 threads.
[Feb 17 11:17] Cannot initialize FFT code, errcode=1002
[Feb 17 11:17] Number sent to gwsetup is too large for the FFTs to handle.
[Feb 17 11:17] Timing trial factoring of M35000011 with 61 bit length factors.  Best time: 6.404 ms.
[Feb 17 11:17] Timing trial factoring of M35000011 with 62 bit length factors.  Best time: 6.428 ms.
[Feb 17 11:17] Timing trial factoring of M35000011 with 63 bit length factors.  Best time: 12.623 ms.
[Feb 17 11:17] Timing trial factoring of M35000011 with 64 bit length factors.  Best time: 12.646 ms.
[Feb 17 11:17] Timing trial factoring of M35000011 with 65 bit length factors.  Best time: 10.620 ms.
[Feb 17 11:17] Timing trial factoring of M35000011 with 66 bit length factors.  Best time: 10.568 ms.
[Feb 17 11:17] Timing trial factoring of M35000011 with 67 bit length factors.  Best time: 10.608 ms.
[Feb 17 11:17] Timing trial factoring of M35000011 with 75 bit length factors.  Best time: 10.851 ms.
[Feb 17 11:17] Timing trial factoring of M35000011 with 76 bit length factors.  Best time: 10.865 ms.
[Feb 17 11:17] Timing trial factoring of M35000011 with 77 bit length factors.  Best time: 10.838 ms.
[Feb 17 11:17] Benchmark complete.
[Feb 17 11:17] Worker stopped.

The screen shot of what it detected at startup. Note that is sees AVX but the L3 cache size should be 16MB. Also, the CPU cores run @ 2.1GHz each.

Robert_47 · 2012-02-17, 18:39

Quote:

Originally Posted by Prime95

Grrrr. Does Options/CPU identify the chip as supporting AVX?

If not, can you add the line "CpuSupportsAVX=1" to local.ini and let me know if your benchmarks indicate prime95 runs faster with AVX vs. v26 using SSE2? Thanks.

It does indicate AVX support, and adding CpuSupportsAVX=1 does nothing. Adding CpuArchitecture=5 does work, with the following results.

Code:

[Fri Feb 17 11:10:00 2012]
Compare your results to other computers at http://www.mersenne.org/report_benchmarks
AMD FX(tm)-4100 Quad-Core Processor            
CPU speed: 7145.40 MHz, 4 cores
CPU features: Prefetch, MMX, SSE, SSE2, SSE4, AVX
L1 cache size: 16 KB
L2 cache size: 2 MB, L3 cache size: 8 MB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 1024
Prime95 64-bit version 27.3, RdtscTiming=1
Best time for 768K FFT length: 16.035 ms., avg: 16.180 ms.
Best time for 896K FFT length: 18.598 ms., avg: 18.746 ms.
Best time for 1024K FFT length: 21.362 ms., avg: 21.603 ms.
Best time for 1280K FFT length: 27.315 ms., avg: 27.488 ms.
Best time for 1536K FFT length: 34.157 ms., avg: 34.386 ms.
Best time for 1792K FFT length: 38.610 ms., avg: 39.915 ms.
Best time for 2048K FFT length: 45.505 ms., avg: 45.838 ms.
Best time for 2560K FFT length: 58.154 ms., avg: 58.291 ms.
Best time for 3072K FFT length: 72.854 ms., avg: 73.033 ms.
Best time for 3584K FFT length: 87.523 ms., avg: 88.185 ms.
Best time for 4096K FFT length: 101.059 ms., avg: 101.255 ms.
Best time for 5120K FFT length: 126.274 ms., avg: 126.459 ms.
Best time for 6144K FFT length: 154.792 ms., avg: 155.017 ms.
Best time for 7168K FFT length: 180.377 ms., avg: 180.638 ms.
Best time for 8192K FFT length: 228.028 ms., avg: 229.531 ms.
Timing FFTs using 2 threads.
Best time for 768K FFT length: 10.198 ms., avg: 10.450 ms.
Best time for 896K FFT length: 12.109 ms., avg: 12.195 ms.
Best time for 1024K FFT length: 13.813 ms., avg: 14.111 ms.
Best time for 1280K FFT length: 17.648 ms., avg: 17.932 ms.
Best time for 1536K FFT length: 22.396 ms., avg: 22.549 ms.
Best time for 1792K FFT length: 26.009 ms., avg: 26.172 ms.
Best time for 2048K FFT length: 29.854 ms., avg: 30.128 ms.
Best time for 2560K FFT length: 38.316 ms., avg: 38.867 ms.
Best time for 3072K FFT length: 47.161 ms., avg: 47.609 ms.
Best time for 3584K FFT length: 56.724 ms., avg: 56.919 ms.
Best time for 4096K FFT length: 64.791 ms., avg: 65.295 ms.
Best time for 5120K FFT length: 81.092 ms., avg: 81.646 ms.
Best time for 6144K FFT length: 101.216 ms., avg: 102.067 ms.
Best time for 7168K FFT length: 119.703 ms., avg: 120.206 ms.
Best time for 8192K FFT length: 147.991 ms., avg: 148.265 ms.
Timing FFTs using 3 threads.
Best time for 768K FFT length: 7.077 ms., avg: 7.567 ms.
Best time for 896K FFT length: 8.158 ms., avg: 8.368 ms.
Best time for 1024K FFT length: 9.247 ms., avg: 9.802 ms.
Best time for 1280K FFT length: 12.015 ms., avg: 12.205 ms.
Best time for 1536K FFT length: 14.970 ms., avg: 15.260 ms.
Best time for 1792K FFT length: 17.418 ms., avg: 17.661 ms.
Best time for 2048K FFT length: 20.051 ms., avg: 20.346 ms.
Best time for 2560K FFT length: 25.626 ms., avg: 26.019 ms.
Best time for 3072K FFT length: 31.602 ms., avg: 32.133 ms.
Best time for 3584K FFT length: 37.741 ms., avg: 38.158 ms.
Best time for 4096K FFT length: 43.382 ms., avg: 43.971 ms.
Best time for 5120K FFT length: 54.130 ms., avg: 54.678 ms.
Best time for 6144K FFT length: 67.366 ms., avg: 68.239 ms.
Best time for 7168K FFT length: 78.552 ms., avg: 79.195 ms.
Best time for 8192K FFT length: 97.640 ms., avg: 98.646 ms.
Timing FFTs using 4 threads.
Best time for 768K FFT length: 5.554 ms., avg: 5.650 ms.
Best time for 896K FFT length: 6.334 ms., avg: 6.482 ms.
Best time for 1024K FFT length: 7.213 ms., avg: 7.749 ms.
Best time for 1280K FFT length: 9.412 ms., avg: 9.538 ms.
Best time for 1536K FFT length: 11.761 ms., avg: 12.036 ms.
Best time for 1792K FFT length: 13.605 ms., avg: 13.865 ms.
Best time for 2048K FFT length: 15.838 ms., avg: 16.180 ms.
Best time for 2560K FFT length: 20.355 ms., avg: 20.613 ms.
Best time for 3072K FFT length: 24.890 ms., avg: 25.225 ms.
Best time for 3584K FFT length: 29.366 ms., avg: 29.775 ms.
Best time for 4096K FFT length: 34.192 ms., avg: 34.332 ms.
Best time for 5120K FFT length: 42.279 ms., avg: 42.504 ms.
Best time for 6144K FFT length: 53.200 ms., avg: 53.802 ms.
[Fri Feb 17 11:15:03 2012]
Best time for 7168K FFT length: 61.309 ms., avg: 61.941 ms.
Best time for 8192K FFT length: 77.664 ms., avg: 78.375 ms.
Best time for 61 bit trial factors: 2.898 ms.
Best time for 62 bit trial factors: 2.935 ms.
Best time for 63 bit trial factors: 3.331 ms.
Best time for 64 bit trial factors: 3.821 ms.
Best time for 65 bit trial factors: 4.922 ms.
Best time for 66 bit trial factors: 7.235 ms.
Best time for 67 bit trial factors: 7.068 ms.
Best time for 75 bit trial factors: 5.679 ms.
Best time for 76 bit trial factors: 5.657 ms.
Best time for 77 bit trial factors: 5.664 ms.

The 26.6 benchmarks:

Code:

[Fri Feb 17 11:16:31 2012]
Compare your results to other computers at http://www.mersenne.org/report_benchmarks
AMD FX(tm)-4100 Quad-Core Processor            
CPU speed: 7145.37 MHz, 4 cores
CPU features: Prefetch, MMX, SSE, SSE2, SSE4, AVX
L1 cache size: 16 KB
L2 cache size: 2 MB, L3 cache size: 8 MB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
L1 TLBS: 32
L2 TLBS: 1024
Prime95 64-bit version 26.6, RdtscTiming=1
Best time for 768K FFT length: 12.699 ms., avg: 13.011 ms.
Best time for 896K FFT length: 14.730 ms., avg: 15.182 ms.
Best time for 1024K FFT length: 16.543 ms., avg: 16.850 ms.
Best time for 1280K FFT length: 21.618 ms., avg: 22.041 ms.
Best time for 1536K FFT length: 27.136 ms., avg: 27.453 ms.
Best time for 1792K FFT length: 32.042 ms., avg: 32.217 ms.
Best time for 2048K FFT length: 35.837 ms., avg: 36.206 ms.
Best time for 2560K FFT length: 44.669 ms., avg: 45.025 ms.
Best time for 3072K FFT length: 55.582 ms., avg: 55.973 ms.
Best time for 3584K FFT length: 70.664 ms., avg: 70.783 ms.
Best time for 4096K FFT length: 72.125 ms., avg: 73.739 ms.
Best time for 5120K FFT length: 95.987 ms., avg: 96.159 ms.
Best time for 6144K FFT length: 118.114 ms., avg: 118.218 ms.
Best time for 7168K FFT length: 145.150 ms., avg: 145.459 ms.
Best time for 8192K FFT length: 160.341 ms., avg: 160.421 ms.
Timing FFTs using 2 threads.
Best time for 768K FFT length: 8.115 ms., avg: 8.359 ms.
Best time for 896K FFT length: 9.243 ms., avg: 9.315 ms.
Best time for 1024K FFT length: 10.619 ms., avg: 10.959 ms.
Best time for 1280K FFT length: 13.965 ms., avg: 14.182 ms.
Best time for 1536K FFT length: 17.407 ms., avg: 17.531 ms.
Best time for 1792K FFT length: 19.832 ms., avg: 20.011 ms.
Best time for 2048K FFT length: 23.235 ms., avg: 23.496 ms.
Best time for 2560K FFT length: 28.494 ms., avg: 28.726 ms.
Best time for 3072K FFT length: 35.235 ms., avg: 35.437 ms.
Best time for 3584K FFT length: 47.298 ms., avg: 47.841 ms.
Best time for 4096K FFT length: 47.045 ms., avg: 47.491 ms.
Best time for 5120K FFT length: 60.316 ms., avg: 60.747 ms.
Best time for 6144K FFT length: 74.983 ms., avg: 75.628 ms.
Best time for 7168K FFT length: 91.288 ms., avg: 91.763 ms.
Best time for 8192K FFT length: 105.784 ms., avg: 106.304 ms.
Timing FFTs using 3 threads.
Best time for 768K FFT length: 5.506 ms., avg: 5.592 ms.
Best time for 896K FFT length: 6.490 ms., avg: 6.588 ms.
Best time for 1024K FFT length: 7.328 ms., avg: 7.850 ms.
Best time for 1280K FFT length: 9.430 ms., avg: 9.531 ms.
Best time for 1536K FFT length: 11.618 ms., avg: 11.750 ms.
Best time for 1792K FFT length: 13.882 ms., avg: 14.021 ms.
Best time for 2048K FFT length: 15.552 ms., avg: 15.774 ms.
Best time for 2560K FFT length: 19.449 ms., avg: 19.657 ms.
Best time for 3072K FFT length: 23.973 ms., avg: 24.064 ms.
Best time for 3584K FFT length: 32.700 ms., avg: 33.082 ms.
Best time for 4096K FFT length: 31.916 ms., avg: 31.972 ms.
Best time for 5120K FFT length: 41.108 ms., avg: 41.458 ms.
Best time for 6144K FFT length: 50.510 ms., avg: 51.064 ms.
Best time for 7168K FFT length: 61.613 ms., avg: 62.130 ms.
Best time for 8192K FFT length: 69.090 ms., avg: 69.676 ms.
Timing FFTs using 4 threads.
Best time for 768K FFT length: 4.364 ms., avg: 4.425 ms.
Best time for 896K FFT length: 5.044 ms., avg: 5.093 ms.
Best time for 1024K FFT length: 5.716 ms., avg: 6.188 ms.
Best time for 1280K FFT length: 7.491 ms., avg: 7.534 ms.
Best time for 1536K FFT length: 9.245 ms., avg: 9.304 ms.
Best time for 1792K FFT length: 10.880 ms., avg: 11.000 ms.
Best time for 2048K FFT length: 12.416 ms., avg: 12.567 ms.
Best time for 2560K FFT length: 15.492 ms., avg: 15.610 ms.
Best time for 3072K FFT length: 19.008 ms., avg: 19.299 ms.
Best time for 3584K FFT length: 25.681 ms., avg: 25.914 ms.
Best time for 4096K FFT length: 25.362 ms., avg: 25.521 ms.
Best time for 5120K FFT length: 32.789 ms., avg: 32.869 ms.
Best time for 6144K FFT length: 40.238 ms., avg: 40.991 ms.
Best time for 7168K FFT length: 48.517 ms., avg: 48.870 ms.
Best time for 8192K FFT length: 56.353 ms., avg: 57.335 ms.
Best time for 61 bit trial factors: 2.898 ms.
Best time for 62 bit trial factors: 2.935 ms.
Best time for 63 bit trial factors: 3.327 ms.
Best time for 64 bit trial factors: 3.822 ms.
Best time for 65 bit trial factors: 4.925 ms.
Best time for 66 bit trial factors: 5.845 ms.
Best time for 67 bit trial factors: 5.814 ms.
Best time for 75 bit trial factors: 5.674 ms.
Best time for 76 bit trial factors: 5.656 ms.
Best time for 77 bit trial factors: 5.659 ms.

Both benchmarks were 64 bits. The actual CPU speed was 3800MHz.

Prime95 · 2012-02-17, 19:30

Quote:

Originally Posted by James Heinrich

With hyperthreading disabled:1: 12.8ms
2: 13.2ms
3: 13.6ms
4: 14.8ms
5: 16.7ms
6: ~19ms (ranges from 18.3 to 21.1 in different workers)

Interesting - worse than I would have expected (I assume all 4 memory channels are populated). Perhaps contention for the L3 cache is the culprit. If I understand correctly, your L3 cache has to feed all 6 cores.

Prime95 · 2012-02-17, 19:34

Quote:

Originally Posted by Robert_47

It does indicate AVX support, and adding CpuSupportsAVX=1 does nothing. Adding CpuArchitecture=5 does work, with the following results.

Pretty grim.

Until I write a version that supports FMA, it looks like I need to steer Bulldozer down the SSE2 path. The way AMD implemented AVX on Bulldozer, SSE2 and AVX have the same theoretical throughput unless you use FMA.

Jwb52z · 2012-02-17, 19:41

How many more interim versions do you think there will be before non-Sandy Bridge CPUs can utilize version 27?

Robert_47 · 2012-02-17, 19:46

Quote:

Originally Posted by Lennart

What software did you use ?

Lennart

Prime95, and Rebirther's newest llr and pfgw. All three have the same problems for both 32 bit and 64 bit.

James Heinrich · 2012-02-17, 19:50

Quote:

Originally Posted by Prime95

Interesting - worse than I would have expected (I assume all 4 memory channels are populated). Perhaps contention for the L3 cache is the culprit. If I understand correctly, your L3 cache has to feed all 6 cores.

All 4 channels are populated, but the RAM is running at 1333MHz, so performance may be better with faster RAM.

aketilander · 2012-02-17, 20:11

Well, when I changed from version 26.6 to version 27.3 on my Intel Core i7-3930K @ 3.20GHz the per iteration time changed from 0.033 to 0.021 on all six cores under Windows ultimate 64-bit. Alla six cores report that they are using AVX.

So there seems to be a VERY large improvement!

Prime95 · 2012-02-17, 20:12

Quote:

Originally Posted by Jwb52z

How many more interim versions do you think there will be before non-Sandy Bridge CPUs can utilize version 27?

I don't know when we will have a final v27 release. This version will work on a non-Sandy Bridge CPU, but it won't be any faster than v26.6.

2012-02-17, 20:11	#43
aketilander "Åke Tilander" Apr 2011 Sandviken, Sweden 1000110110₂ Posts	Intel Core i7-3930K @ 3.20GHz Well, when I changed from version 26.6 to version 27.3 on my Intel Core i7-3930K @ 3.20GHz the per iteration time changed from 0.033 to 0.021 on all six cores under Windows ultimate 64-bit. Alla six cores report that they are using AVX. So there seems to be a VERY large improvement!

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2012-02-17, 19:41	#40
Jwb52z Sep 2002 17·47 Posts	How many more interim versions do you think there will be before non-Sandy Bridge CPUs can utilize version 27?