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Forum: Hardware October 25, 2018, 05:42
Replies: 768
Views: 197,191
Posted By spaceprop
More updates and hardware upgrades. X-axis...

More updates and hardware upgrades.

X-axis is iter/s. The processor(s) and RAM are called out in the graph. All RAM is dual rank, and if faster than max allowed by the processor, it has been...
Forum: Hardware July 25, 2018, 03:55
Replies: 768
Views: 197,191
Posted By spaceprop
so much want, so not enough money

so much want, so not enough money
Forum: Hardware July 13, 2018, 05:40
Replies: 768
Views: 197,191
Posted By spaceprop
Huh...never knew this.

Huh...never knew this.
Forum: Hardware July 13, 2018, 05:39
Replies: 768
Views: 197,191
Posted By spaceprop
Cool, thanks.

Cool, thanks.
Forum: Hardware July 13, 2018, 05:38
Replies: 768
Views: 197,191
Posted By spaceprop
sudo dmidecode -t memory I think that will give...

sudo dmidecode -t memory I think that will give you the part number, which you can then look up.
Forum: Hardware July 13, 2018, 04:35
Replies: 768
Views: 197,191
Posted By spaceprop
I saw you have 16x8GB 2666MHz RAM, but what rank...

I saw you have 16x8GB 2666MHz RAM, but what rank is it? If it's 2R (dual rank), and the 2x 7601 was 1R, that might explain it.



havref: Is your RAM single rank?

I'm curious now, haha
Forum: Hardware July 13, 2018, 04:28
Replies: 768
Views: 197,191
Posted By spaceprop
Agreed. I saw significant performance gains from...

Agreed. I saw significant performance gains from dual rank vs single rank DDR3.



I never considered kernel versions...that's a good point. I make sure the system is idle and I check frequencies...
Forum: Hardware July 12, 2018, 06:53
Replies: 768
Views: 197,191
Posted By spaceprop
It's pretty amazing that 4x EPYC 7351's are...

It's pretty amazing that 4x EPYC 7351's are roughly equivalent to (maybe slightly faster than) my whole cluster, which has 10x 10 core processors and almost perfect node scaling thanks to infiniband....
Forum: Hardware July 12, 2018, 06:48
Replies: 768
Views: 197,191
Posted By spaceprop
Updating my earlier table with more results. ...

Updating my earlier table with more results.

X-axis is iter/s. The processor(s) and RAM are called out in the graph. All OF+v1712, OpenMPI 3.1.0, CentOS 7.5. I applied the following BIOS settings...
Forum: Hardware July 12, 2018, 06:34
Replies: 768
Views: 197,191
Posted By spaceprop
That's faster than the dual 7601's in the main...

That's faster than the dual 7601's in the main chart (data from havref posted earlier in this thread). Can you give some more info about your setup?
Forum: Hardware June 1, 2018, 11:04
Replies: 768
Views: 197,191
Posted By spaceprop
No, I did not. It downclocked to 1600MHz. Same...

No, I did not. It downclocked to 1600MHz. Same with the PC4-19200 (2400MHz); it downclocked to 2133MHz with the e5 v3's.

I edited the post to clarify that.
Forum: Hardware June 1, 2018, 09:52
Replies: 768
Views: 197,191
Posted By spaceprop
My results

Hi,

I've been going through some homelab cluster upgrades, so I had a chance to test a ton of different processor/RAM combinations. Here are my all-core iteration/s results.

The processor(s)...
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