Lower speeds after upgrading the cpu.

wagner85 · 2020-11-17, 04:56

Hey guys I upgraded one of my dual cpu servers from 2 x E5-2620 v0 to 2 x 2690 v0.
I am having higher speeds on the Xeons 2620 than in the 2690.
And I am interested to know why I Apparently had no gains in doing this upgrade.
The specs are very different and I was expecting to improve my speeds by a lot.
Anyone has any idea why my time/interactions did not improve as I expected?

2620:
base freq. 2Ghz
Turbo: 2.5
Cores: 6

2690
base freq. 2.9 Ghz
Turbo: 3.8
Cores: 8

All cores are being used in both machines.

wagner85 · 2020-11-17, 04:57

3:55
[Worker #2 Nov 16 22:45] Iteration: 5800000 / 108897011 [5.32%], ms/iter: 15.848, ETA: 18d 21:51
[Worker #1 Nov 16 22:47] Iteration: 54890000 / 112583063 [48.75%], ms/iter: 13.131, ETA: 8d 18:26
[Worker #2 Nov 16 22:48] Iteration: 5810000 / 108897011 [5.33%], ms/iter: 15.728, ETA: 18d 18:21
[Worker #1 Nov 16 22:49] Iteration: 54900000 / 112583063 [48.76%], ms/iter: 12.977, ETA: 8d 15:55
[Worker #2 Nov 16 22:50] Iteration: 5820000 / 108897011 [5.34%], ms/iter: 15.709, ETA: 18d 17:46
[Worker #1 Nov 16 22:51] Iteration: 54910000 / 112583063 [48.77%], ms/iter: 13.160, ETA: 8d 18:49
[Worker #2 Nov 16 22:53] Iteration: 5830000 / 108897011 [5.35%], ms/iter: 15.685, ETA: 18d 17:04
[Worker #1 Nov 16 22:54] Iteration: 54920000 / 112583063 [48.78%], ms/iter: 12.808, ETA: 8d 13:08
[Worker #2 Nov 16 22:56] Iteration: 5840000 / 108897011 [5.36%], ms/iter: 15.683, ETA: 18d 16:57
[Worker #1 Nov 16 22:56] Iteration: 54930000 / 112583063 [48.79%], ms/iter: 12.929, ETA: 8d 15:03

wagner85 · 2020-11-17, 04:58

57
[Worker #2 Nov 16 22:50] Iteration: 22040000 / 108896783 [20.23%], ms/iter: 11.274, ETA: 11d 07:59
[Worker #1 Nov 16 22:51] Iteration: 21840000 / 108896377 [20.05%], ms/iter: 11.287, ETA: 11d 08:56
[Worker #2 Nov 16 22:52] Iteration: 22050000 / 108896783 [20.24%], ms/iter: 11.272, ETA: 11d 07:55
[Worker #1 Nov 16 22:53] Iteration: 21850000 / 108896377 [20.06%], ms/iter: 11.286, ETA: 11d 08:54
[Worker #2 Nov 16 22:54] Iteration: 22060000 / 108896783 [20.25%], ms/iter: 11.274, ETA: 11d 07:56
[Worker #1 Nov 16 22:54] Iteration: 21860000 / 108896377 [20.07%], ms/iter: 11.290, ETA: 11d 08:57
[Worker #2 Nov 16 22:56] Iteration: 22070000 / 108896783 [20.26%], ms/iter: 11.275, ETA: 11d 07:55
[Worker #1 Nov 16 22:56] Iteration: 21870000 / 108896377 [20.08%], ms/iter: 11.296, ETA: 11d 09:04

VBCurtis · 2020-11-17, 06:39

1. How is going from 15.6ms to 11.2 "no gains"?
2. You now have a grasp of the concept of memory saturation. Prime95 on many architectures is limited by memory transfer speed rather than CPU speed. I bet you'll find that 6 cores of the new CPU will be nearly as fast as 8 for Prime95 workers, and if you run 6 you have 2 cores on each socket left over for tasks that are more CPU intensive but less memory intensive.
That is, 6 cores is likely enough to use up all the memory bandwidth. Try some experiments (benchmarks), and see for yourself.

phillipsjk · 2020-11-17, 07:07

I think you will find the fast CPU has a lower memory clock.

You may also be power limited. Try running with 6 cores on the 8 core CPU.

Edit: decided to look up the chips

On paper the newer chip has a faster memory interface and larger power envelope. `\_o_/'

Edit2: are your temperatures as expected? The new CPU has a lower max T[CASE]. You may have to set more aggressive fan curves in the BIOS.

axn · 2020-11-17, 08:25

Quote:

Originally Posted by VBCurtis

1. How is going from 15.6ms to 11.2 "no gains"?

The problem is that the supposedly-slower 2620 is the one with the better timing.

To OP: What is your memory config (speed / size / # of sticks)? What is your P95 worker settings?

wagner85 · 2020-11-17, 12:18

Quote:

Originally Posted by VBCurtis

1. How is going from 15.6ms to 11.2 "no gains"?
2. You now have a grasp of the concept of memory saturation. Prime95 on many architectures is limited by memory transfer speed rather than CPU speed. I bet you'll find that 6 cores of the new CPU will be nearly as fast as 8 for Prime95 workers, and if you run 6 you have 2 cores on each socket left over for tasks that are more CPU intensive but less memory intensive.
That is, 6 cores is likely enough to use up all the memory bandwidth. Try some experiments (benchmarks), and see for yourself.

Actually the old CPU 2620 is faster than the new one 2690.
I will run more tests tonight.

wagner85 · 2020-11-17, 12:22

Quote:

Originally Posted by axn

The problem is that the supposedly-slower 2620 is the one with the better timing.

To OP: What is your memory config (speed / size / # of sticks)? What is your P95 worker settings?

These systems are identically the same.
The only difference is de cpu.
Here I have a quad channel memory.
8 sticks of 4gb of 1333mhz.

Prime work setting is set to run 2 workers (1 per physical cpu) on the machine with those 2690.
And 2 workers (1 per physical cpu) on the machine with 2620.

wagner85 · 2020-11-17, 12:28

PSSC Labs Z9PR-D12 Series

Geekbench 5 Score

771
Single-Core Score

10557
Multi-Core Score

Geekbench 5.2.3 Tryout for Linux x86 (64-bit)
Result Information
User w4s0r1
Upload Date November 8th 2020, 5:24pm
Views 7
System Information
System Information
Operating System Ubuntu 20.04.1 LTS 5.4.0-52-generic x86_64
Model PSSC Labs Z9PR-D12 Series
Motherboard ASUSTeK Computer INC. Z9PR-D12 Series
Processor Information
Name Intel Xeon E5-2690
Topology 2 Processors, 16 Cores, 32 Threads
Identifier GenuineIntel Family 6 Model 45 Stepping 7
Base Frequency 3.80 GHz
L1 Instruction Cache 32.0 KB x 8
L1 Data Cache 32.0 KB x 8
L2 Cache 256 KB x 8
L3 Cache 20.0 MB x 1
Memory Information
Size 31.35 GB
Type
Single-Core Performance
Single-Core Score 771
Crypto Score 858
Integer Score 721
Floating Point Score 864
AES-XTS
858
1.46 GB/sec
Text Compression
986
4.99 MB/sec
Image Compression
754
35.7 Mpixels/sec
Navigation
860
2.43 MTE/sec
HTML5
589
691.2 KElements/sec
SQLite
637
199.6 Krows/sec
PDF Rendering
695
37.7 Mpixels/sec
Text Rendering
577
183.8 KB/sec
Clang
715
5.57 Klines/sec
Camera
767
8.89 images/sec
N-Body Physics
843
1.05 Mpairs/sec
Rigid Body Physics
893
5535.5 FPS
Gaussian Blur
710
39.0 Mpixels/sec
Face Detection
724
5.58 images/sec
Horizon Detection
814
20.1 Mpixels/sec
Image Inpainting
1488
73.0 Mpixels/sec
HDR
1503
20.5 Mpixels/sec
Ray Tracing
1043
837.4 Kpixels/sec
Structure from Motion
583
5.23 Kpixels/sec
Speech Recognition
973
31.1 Words/sec
Machine Learning
483
18.7 images/sec
Multi-Core Performance
Multi-Core Score 10557
Crypto Score 7271
Integer Score 10717
Floating Point Score 10758
AES-XTS
7271
12.4 GB/sec
Text Compression
14618
73.9 MB/sec
Image Compression
13207
624.8 Mpixels/sec
Navigation
6796
19.2 MTE/sec
HTML5
10892
12.8 MElements/sec
SQLite
12811
4.01 Mrows/sec
PDF Rendering
11919
646.9 Mpixels/sec
Text Rendering
7397
2.30 MB/sec
Clang
12171
94.8 Klines/sec
Camera
9495
110.1 images/sec
N-Body Physics
6526
8.16 Mpairs/sec
Rigid Body Physics
16528
102397.5 FPS
Gaussian Blur
10566
580.8 Mpixels/sec
Face Detection
13150
101.2 images/sec
Horizon Detection
12953
319.3 Mpixels/sec
Image Inpainting
16088
789.2 Mpixels/sec
HDR
21069
287.1 Mpixels/sec
Ray Tracing
13026
10.5 Mpixels/sec
Structure from Motion
8877
79.5 Kpixels/sec
Speech Recognition
8295
265.2 Words/sec
Machine Learning
3539
136.7 imagesI

wagner85 · 2020-11-17, 12:31

PSSC Labs Z9PR-D12 Series

Geekbench 5 Score

441
Single-Core Score

5434
Multi-Core Score

Geekbench 5.2.3 Tryout for Linux x86 (64-bit)
Result Information
User w4s0r1
Upload Date September 5th 2020, 11:44am
Views 24
System Information
System Information
Operating System Ubuntu 20.04.1 LTS 5.4.0-45-generic x86_64
Model PSSC Labs Z9PR-D12 Series
Motherboard ASUSTeK Computer INC. Z9PR-D12 Series
Processor Information
Name Intel Xeon E5-2620
Topology 2 Processors, 12 Cores, 24 Threads
Identifier GenuineIntel Family 6 Model 45 Stepping 7
Base Frequency 2.50 GHz
L1 Instruction Cache 32.0 KB x 6
L1 Data Cache 32.0 KB x 6
L2 Cache 256 KB x 6
L3 Cache 15.0 MB x 1
Memory Information
Size 31.36 GB
Type
Single-Core Performance
Single-Core Score 441
Crypto Score 474
Integer Score 423
Floating Point Score 473
AES-XTS
474
827.5 MB/sec
Text Compression
538
2.72 MB/sec
Image Compression
421
19.9 Mpixels/sec
Navigation
472
1.33 MTE/sec
HTML5
401
471.2 KElements/sec
SQLite
411
128.9 Krows/sec
PDF Rendering
397
21.5 Mpixels/sec
Text Rendering
383
121.9 KB/sec
Clang
411
3.20 Klines/sec
Camera
390
4.52 images/sec
N-Body Physics
436
545.7 Kpairs/sec
Rigid Body Physics
475
2942.3 FPS
Gaussian Blur
360
19.8 Mpixels/sec
Face Detection
443
3.41 images/sec
Horizon Detection
465
11.5 Mpixels/sec
Image Inpainting
710
34.8 Mpixels/sec
HDR
782
10.7 Mpixels/sec
Ray Tracing
532
427.6 Kpixels/sec
Structure from Motion
320
2.87 Kpixels/sec
Speech Recognition
586
18.7 Words/sec
Machine Learning
314
12.1 images/sec
Multi-Core Performance
Multi-Core Score 5434
Crypto Score 5764
Integer Score 5263
Floating Point Score 5748
AES-XTS
5764
9.83 GB/sec
Text Compression
6763
34.2 MB/sec
Image Compression
6153
291.1 Mpixels/sec
Navigation
5298
14.9 MTE/sec
HTML5
4803
5.64 MElements/sec
SQLite
5673
1.78 Mrows/sec
PDF Rendering
5375
291.7 Mpixels/sec
Text Rendering
4411
1.37 MB/sec
Clang
5659
44.1 Klines/sec
Camera
3847
44.6 images/sec
N-Body Physics
3978
4.98 Mpairs/sec
Rigid Body Physics
7338
45459.2 FPS
Gaussian Blur
5627
309.3 Mpixels/sec
Face Detection
5784
44.5 images/sec
Horizon Detection
5555
136.9 Mpixels/sec
Image Inpainting
8589
421.3 Mpixels/sec
HDR
10903
148.6 Mpixels/sec
Ray Tracing
7280
5.85 Mpixels/sec
Structure from Motion
4366
39.1 Kpixels/sec
Speech Recognition
5163
165.1 Words/sec
Machine Learning
2790
107.8 images/s

axn · 2020-11-17, 12:36

Quote:

Originally Posted by wagner85

Prime work setting is set to run 2 workers (1 per physical cpu) on the machine with those 2690.
And 2 workers (1 per physical cpu) on the machine with 2620.

Can you post your prime.txt & local.txt from both machines? I'm just wondering if there are any wrong affinity settings.

If not, it could be thermal issues - especially since the 2690 is showing very diffferent iteration times on the two workers.

2020-11-17, 04:58	#3
wagner85 Aug 2020 5² Posts	Xeons 2620 v0 57 [Worker #2 Nov 16 22:50] Iteration: 22040000 / 108896783 [20.23%], ms/iter: 11.274, ETA: 11d 07:59 [Worker #1 Nov 16 22:51] Iteration: 21840000 / 108896377 [20.05%], ms/iter: 11.287, ETA: 11d 08:56 [Worker #2 Nov 16 22:52] Iteration: 22050000 / 108896783 [20.24%], ms/iter: 11.272, ETA: 11d 07:55 [Worker #1 Nov 16 22:53] Iteration: 21850000 / 108896377 [20.06%], ms/iter: 11.286, ETA: 11d 08:54 [Worker #2 Nov 16 22:54] Iteration: 22060000 / 108896783 [20.25%], ms/iter: 11.274, ETA: 11d 07:56 [Worker #1 Nov 16 22:54] Iteration: 21860000 / 108896377 [20.07%], ms/iter: 11.290, ETA: 11d 08:57 [Worker #2 Nov 16 22:56] Iteration: 22070000 / 108896783 [20.26%], ms/iter: 11.275, ETA: 11d 07:55 [Worker #1 Nov 16 22:56] Iteration: 21870000 / 108896377 [20.08%], ms/iter: 11.296, ETA: 11d 09:04

2020-11-17, 07:07	#5
phillipsjk Nov 2019 2·5·7 Posts	I think you will find the fast CPU has a lower memory clock. You may also be power limited. Try running with 6 cores on the 8 core CPU. Edit: decided to look up the chips On paper the newer chip has a faster memory interface and larger power envelope. `\_o_/' Edit2: are your temperatures as expected? The new CPU has a lower max T[CASE]. You may have to set more aggressive fan curves in the BIOS. Last fiddled with by phillipsjk on 2020-11-17 at 07:16

2020-11-17, 12:28	#9
wagner85 Aug 2020 5² Posts	2690 v0 PSSC Labs Z9PR-D12 Series Geekbench 5 Score 771 Single-Core Score 10557 Multi-Core Score Geekbench 5.2.3 Tryout for Linux x86 (64-bit) Result Information User w4s0r1 Upload Date November 8th 2020, 5:24pm Views 7 System Information System Information Operating System Ubuntu 20.04.1 LTS 5.4.0-52-generic x86_64 Model PSSC Labs Z9PR-D12 Series Motherboard ASUSTeK Computer INC. Z9PR-D12 Series Processor Information Name Intel Xeon E5-2690 Topology 2 Processors, 16 Cores, 32 Threads Identifier GenuineIntel Family 6 Model 45 Stepping 7 Base Frequency 3.80 GHz L1 Instruction Cache 32.0 KB x 8 L1 Data Cache 32.0 KB x 8 L2 Cache 256 KB x 8 L3 Cache 20.0 MB x 1 Memory Information Size 31.35 GB Type Single-Core Performance Single-Core Score 771 Crypto Score 858 Integer Score 721 Floating Point Score 864 AES-XTS 858 1.46 GB/sec Text Compression 986 4.99 MB/sec Image Compression 754 35.7 Mpixels/sec Navigation 860 2.43 MTE/sec HTML5 589 691.2 KElements/sec SQLite 637 199.6 Krows/sec PDF Rendering 695 37.7 Mpixels/sec Text Rendering 577 183.8 KB/sec Clang 715 5.57 Klines/sec Camera 767 8.89 images/sec N-Body Physics 843 1.05 Mpairs/sec Rigid Body Physics 893 5535.5 FPS Gaussian Blur 710 39.0 Mpixels/sec Face Detection 724 5.58 images/sec Horizon Detection 814 20.1 Mpixels/sec Image Inpainting 1488 73.0 Mpixels/sec HDR 1503 20.5 Mpixels/sec Ray Tracing 1043 837.4 Kpixels/sec Structure from Motion 583 5.23 Kpixels/sec Speech Recognition 973 31.1 Words/sec Machine Learning 483 18.7 images/sec Multi-Core Performance Multi-Core Score 10557 Crypto Score 7271 Integer Score 10717 Floating Point Score 10758 AES-XTS 7271 12.4 GB/sec Text Compression 14618 73.9 MB/sec Image Compression 13207 624.8 Mpixels/sec Navigation 6796 19.2 MTE/sec HTML5 10892 12.8 MElements/sec SQLite 12811 4.01 Mrows/sec PDF Rendering 11919 646.9 Mpixels/sec Text Rendering 7397 2.30 MB/sec Clang 12171 94.8 Klines/sec Camera 9495 110.1 images/sec N-Body Physics 6526 8.16 Mpairs/sec Rigid Body Physics 16528 102397.5 FPS Gaussian Blur 10566 580.8 Mpixels/sec Face Detection 13150 101.2 images/sec Horizon Detection 12953 319.3 Mpixels/sec Image Inpainting 16088 789.2 Mpixels/sec HDR 21069 287.1 Mpixels/sec Ray Tracing 13026 10.5 Mpixels/sec Structure from Motion 8877 79.5 Kpixels/sec Speech Recognition 8295 265.2 Words/sec Machine Learning 3539 136.7 imagesI

2020-11-17, 12:31	#10
wagner85 Aug 2020 5² Posts	2620 PSSC Labs Z9PR-D12 Series Geekbench 5 Score 441 Single-Core Score 5434 Multi-Core Score Geekbench 5.2.3 Tryout for Linux x86 (64-bit) Result Information User w4s0r1 Upload Date September 5th 2020, 11:44am Views 24 System Information System Information Operating System Ubuntu 20.04.1 LTS 5.4.0-45-generic x86_64 Model PSSC Labs Z9PR-D12 Series Motherboard ASUSTeK Computer INC. Z9PR-D12 Series Processor Information Name Intel Xeon E5-2620 Topology 2 Processors, 12 Cores, 24 Threads Identifier GenuineIntel Family 6 Model 45 Stepping 7 Base Frequency 2.50 GHz L1 Instruction Cache 32.0 KB x 6 L1 Data Cache 32.0 KB x 6 L2 Cache 256 KB x 6 L3 Cache 15.0 MB x 1 Memory Information Size 31.36 GB Type Single-Core Performance Single-Core Score 441 Crypto Score 474 Integer Score 423 Floating Point Score 473 AES-XTS 474 827.5 MB/sec Text Compression 538 2.72 MB/sec Image Compression 421 19.9 Mpixels/sec Navigation 472 1.33 MTE/sec HTML5 401 471.2 KElements/sec SQLite 411 128.9 Krows/sec PDF Rendering 397 21.5 Mpixels/sec Text Rendering 383 121.9 KB/sec Clang 411 3.20 Klines/sec Camera 390 4.52 images/sec N-Body Physics 436 545.7 Kpairs/sec Rigid Body Physics 475 2942.3 FPS Gaussian Blur 360 19.8 Mpixels/sec Face Detection 443 3.41 images/sec Horizon Detection 465 11.5 Mpixels/sec Image Inpainting 710 34.8 Mpixels/sec HDR 782 10.7 Mpixels/sec Ray Tracing 532 427.6 Kpixels/sec Structure from Motion 320 2.87 Kpixels/sec Speech Recognition 586 18.7 Words/sec Machine Learning 314 12.1 images/sec Multi-Core Performance Multi-Core Score 5434 Crypto Score 5764 Integer Score 5263 Floating Point Score 5748 AES-XTS 5764 9.83 GB/sec Text Compression 6763 34.2 MB/sec Image Compression 6153 291.1 Mpixels/sec Navigation 5298 14.9 MTE/sec HTML5 4803 5.64 MElements/sec SQLite 5673 1.78 Mrows/sec PDF Rendering 5375 291.7 Mpixels/sec Text Rendering 4411 1.37 MB/sec Clang 5659 44.1 Klines/sec Camera 3847 44.6 images/sec N-Body Physics 3978 4.98 Mpairs/sec Rigid Body Physics 7338 45459.2 FPS Gaussian Blur 5627 309.3 Mpixels/sec Face Detection 5784 44.5 images/sec Horizon Detection 5555 136.9 Mpixels/sec Image Inpainting 8589 421.3 Mpixels/sec HDR 10903 148.6 Mpixels/sec Ray Tracing 7280 5.85 Mpixels/sec Structure from Motion 4366 39.1 Kpixels/sec Speech Recognition 5163 165.1 Words/sec Machine Learning 2790 107.8 images/s

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2020-11-17, 04:56	#1
wagner85 Aug 2020 5² Posts	Lower speeds after upgrading the cpu. Hey guys I upgraded one of my dual cpu servers from 2 x E5-2620 v0 to 2 x 2690 v0. I am having higher speeds on the Xeons 2620 than in the 2690. And I am interested to know why I Apparently had no gains in doing this upgrade. The specs are very different and I was expecting to improve my speeds by a lot. Anyone has any idea why my time/interactions did not improve as I expected? 2620: base freq. 2Ghz Turbo: 2.5 Cores: 6 2690 base freq. 2.9 Ghz Turbo: 3.8 Cores: 8 All cores are being used in both machines. Last fiddled with by wagner85 on 2020-11-17 at 05:00

2020-11-17, 04:57	#2
wagner85 Aug 2020 5² Posts	Xeons 2690 v0 3:55 [Worker #2 Nov 16 22:45] Iteration: 5800000 / 108897011 [5.32%], ms/iter: 15.848, ETA: 18d 21:51 [Worker #1 Nov 16 22:47] Iteration: 54890000 / 112583063 [48.75%], ms/iter: 13.131, ETA: 8d 18:26 [Worker #2 Nov 16 22:48] Iteration: 5810000 / 108897011 [5.33%], ms/iter: 15.728, ETA: 18d 18:21 [Worker #1 Nov 16 22:49] Iteration: 54900000 / 112583063 [48.76%], ms/iter: 12.977, ETA: 8d 15:55 [Worker #2 Nov 16 22:50] Iteration: 5820000 / 108897011 [5.34%], ms/iter: 15.709, ETA: 18d 17:46 [Worker #1 Nov 16 22:51] Iteration: 54910000 / 112583063 [48.77%], ms/iter: 13.160, ETA: 8d 18:49 [Worker #2 Nov 16 22:53] Iteration: 5830000 / 108897011 [5.35%], ms/iter: 15.685, ETA: 18d 17:04 [Worker #1 Nov 16 22:54] Iteration: 54920000 / 112583063 [48.78%], ms/iter: 12.808, ETA: 8d 13:08 [Worker #2 Nov 16 22:56] Iteration: 5840000 / 108897011 [5.36%], ms/iter: 15.683, ETA: 18d 16:57 [Worker #1 Nov 16 22:56] Iteration: 54930000 / 112583063 [48.79%], ms/iter: 12.929, ETA: 8d 15:03

2020-11-17, 06:39	#4
VBCurtis "Curtis" Feb 2005 Riverside, CA 11172₈ Posts	1. How is going from 15.6ms to 11.2 "no gains"? 2. You now have a grasp of the concept of memory saturation. Prime95 on many architectures is limited by memory transfer speed rather than CPU speed. I bet you'll find that 6 cores of the new CPU will be nearly as fast as 8 for Prime95 workers, and if you run 6 you have 2 cores on each socket left over for tasks that are more CPU intensive but less memory intensive. That is, 6 cores is likely enough to use up all the memory bandwidth. Try some experiments (benchmarks), and see for yourself.