20200505, 00:21  #34 
"Alexander"
Nov 2008
The Alamo City
3·307 Posts 
I'd have to imagine adding another layer in the middle would slow it down further,

20200505, 02:01  #35  
Random Account
Aug 2009
Not U. + S.A.
2,539 Posts 
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20200505, 05:09  #36  
"Alexander"
Nov 2008
The Alamo City
3×307 Posts 
Quote:


20200505, 15:02  #37  
Random Account
Aug 2009
Not U. + S.A.
2,539 Posts 
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We have drifted offtopic with this, so it is time to wrap it up. 

20200505, 19:49  #38  
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
7376_{10} Posts 
Quote:
mprime bench results on the i78750h on ubuntu while win10 is running: Code:
Prime95 64bit version 29.8, RdtscTiming=1 Timings for 5120K FFT length (1 core, 1 worker): 127.43 ms. Throughput: 7.85 iter/sec. Timings for 5120K FFT length (1 core hyperthreaded, 1 worker): 66.42 ms. Throughput: 15.06 iter/sec. Timings for 5120K FFT length (2 cores, 1 worker): 67.16 ms. Throughput: 14.89 iter/sec. Timings for 5120K FFT length (2 cores hyperthreaded, 1 worker): 30.84 ms. Throughput: 32.42 iter/sec. Timings for 5120K FFT length (3 cores, 1 worker): 39.07 ms. Throughput: 25.60 iter/sec. Timings for 5120K FFT length (3 cores hyperthreaded, 1 worker): 20.89 ms. Throughput: 47.88 iter/sec. Timings for 5120K FFT length (6 cores, 1 worker): 21.50 ms. Throughput: 46.50 iter/sec. Timings for 5120K FFT length (6 cores hyperthreaded, 1 worker): 15.69 ms. Throughput: 63.75 iter/sec. Timings for 5376K FFT length (1 core, 1 worker): 135.43 ms. Throughput: 7.38 iter/sec. Timings for 5376K FFT length (1 core hyperthreaded, 1 worker): 66.47 ms. Throughput: 15.04 iter/sec. Timings for 5376K FFT length (2 cores, 1 worker): 63.31 ms. Throughput: 15.79 iter/sec. Timings for 5376K FFT length (2 cores hyperthreaded, 1 worker): 32.17 ms. Throughput: 31.08 iter/sec. Timings for 5376K FFT length (3 cores, 1 worker): 42.50 ms. Throughput: 23.53 iter/sec. Timings for 5376K FFT length (3 cores hyperthreaded, 1 worker): 23.16 ms. Throughput: 43.17 iter/sec. Timings for 5376K FFT length (6 cores, 1 worker): 23.65 ms. Throughput: 42.28 iter/sec. Timings for 5376K FFT length (6 cores hyperthreaded, 1 worker): 17.02 ms. Throughput: 58.77 iter/sec. Code:
[Wed Jan 29 14:15:56 2020] FFTlen=5120K, Type=3, Arch=4, Pass1=256, Pass2=20480, clm=4 (6 cores, 1 worker): 18.36 ms. Throughput: 54.47 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=256, Pass2=20480, clm=2 (6 cores, 1 worker): 15.56 ms. Throughput: 64.28 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=256, Pass2=20480, clm=1 (6 cores, 1 worker): 19.77 ms. Throughput: 50.58 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=320, Pass2=16384, clm=4 (6 cores, 1 worker): 13.77 ms. Throughput: 72.61 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=320, Pass2=16384, clm=2 (6 cores, 1 worker): 18.71 ms. Throughput: 53.44 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=320, Pass2=16384, clm=1 (6 cores, 1 worker): 14.32 ms. Throughput: 69.83 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=512, Pass2=10240, clm=4 (6 cores, 1 worker): 17.60 ms. Throughput: 56.81 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=512, Pass2=10240, clm=2 (6 cores, 1 worker): 17.61 ms. Throughput: 56.80 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=512, Pass2=10240, clm=1 (6 cores, 1 worker): 12.61 ms. Throughput: 79.29 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=640, Pass2=8192, clm=4 (6 cores, 1 worker): 17.27 ms. Throughput: 57.92 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=640, Pass2=8192, clm=2 (6 cores, 1 worker): 22.27 ms. Throughput: 44.91 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=640, Pass2=8192, clm=1 (6 cores, 1 worker): 12.68 ms. Throughput: 78.89 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=1024, Pass2=5120, clm=4 (6 cores, 1 worker): 19.36 ms. Throughput: 51.65 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=1024, Pass2=5120, clm=2 (6 cores, 1 worker): 13.52 ms. Throughput: 73.97 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=1024, Pass2=5120, clm=1 (6 cores, 1 worker): 16.59 ms. Throughput: 60.29 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=1280, Pass2=4096, clm=4 (6 cores, 1 worker): 19.69 ms. Throughput: 50.78 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=1280, Pass2=4096, clm=2 (6 cores, 1 worker): 12.48 ms. Throughput: 80.10 iter/sec. FFTlen=5120K, Type=3, Arch=4, Pass1=1280, Pass2=4096, clm=1 (6 cores, 1 worker): 17.95 ms. Throughput: 55.72 iter/sec. Last fiddled with by kriesel on 20200505 at 19:52 

20200506, 01:25  #39  
Random Account
Aug 2009
Not U. + S.A.
2,539 Posts 
Quote:
I have a much older laptop. It has a dual core i5 which runs Windows 7 Pro x64. I say dual core but it shows as four threads in the performance section of the Task Manager. It would be two physical and two logical. I have a widget that sits in the upperright corner of the screen which displays the core temperatures. Window's 7 is really sluggish on it. I wonder if it could run Ubuntu? It has a WiFi internet connection. That might make the setup problematic without the driver available at the beginning. 

20200506, 13:05  #40  
"Jacob"
Sep 2006
Brussels, Belgium
1,907 Posts 
Quote:
In general hyperthreading is not beneficial for Prime95 but in some cases using two threads per core can be beneficial, it depends on FFT size, processor, cache and memory. One notable example is the benchmark Kriesel just posted. This means that one should benchmark the different threads per core combinations to make an informed choice (that choice can also be influenced by the energy costs and the accompanying necessary thermal dissipation, but those must be measured while the benchmark is running since the benchmark does not provide them.) Jacob 

20200506, 15:12  #41  
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Aug 2009
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20200506, 16:37  #42  
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
2^{4}×461 Posts 
Quote:
I also have a Win7 x64 i3370M (2core & HT) laptop, 10 years old, recently replaced the HD. It used to run both cores at 100% but eventually deteriorated to 1 core 25%. After a good compressedair cleaning it's now capable of 2 core 80% up to about 30C ambient. This system is rated at about 35 watts total, 25 cpu package, but of course it's much slower than the i78750h; months to do a PRP DC at ~80M It looks like WSL on Win7 is not possible, but there are alternatives. https://github.com/Microsoft/WSL/issues/13 

20200506, 19:15  #43 
"Oliver"
Sep 2017
Porta Westfalica, DE
2×11×61 Posts 

20200506, 22:19  #44  
Random Account
Aug 2009
Not U. + S.A.
2,539 Posts 
Quote:
Quote:


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