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Category: Community
Forum: Hardware Chat Room
Thread: Single channel memory. Does it restrict crunching? |
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Thread Status: Active Total posts in this thread: 44
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thunder7
Senior Cruncher Netherlands Joined: Mar 6, 2013 Post Count: 238 Status: Offline Project Badges: 
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I have selected any available project, including beta.
From my own statistics script I can see I completed only 49 SCC units in the past 4 weeks, compared to about 6500 MCM units, 8000 MIPS units, 43 ARP units and 7500 OPC units. Computing time is about .25 year per day MCM, .16 OPC, and all the rest is a lot less - total computing time is about .41 to .44 years per day, so there's not much left. Unfortunately there seems to be no way to include text in a non-proportional font here, or I could include the output of my own monitoring script. |
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DukeBox
Cruncher Joined: Nov 18, 2004 Post Count: 30 Status: Offline Project Badges: 
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Well, first results seem to indicate a clear change. I exchanged 2x 16 for 8x 4 dimms Are the timings the same ? And what CPU ? |
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thunder7
Senior Cruncher Netherlands Joined: Mar 6, 2013 Post Count: 238 Status: Offline Project Badges:
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Timings were the same, the cpu's are 20 core Xeon V4 Engineering Samples, running at 2.3 GHz on all cores.
----------------------------------------[Edit 1 times, last edit by thunder7 at Sep 30, 2020 7:24:33 PM] |
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adriverhoef
Master Cruncher The Netherlands Joined: Apr 3, 2009 Post Count: 2346 Status: Offline Project Badges:
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Unfortunately there seems to be no way to include text in a non-proportional font here, or I could include the output of my own monitoring script.Unfortunately there seems to be no way to include text in a non-proportional font here, or I could include the output of my own monitoring script.Unfortunately there seems to be no way to include text in a non-proportional font here, or I could include the output of my own monitoring script. Unfortunately there seems to be no way to include text in a non-proportional font here, or I could include the output of my own monitoring script.PS    |
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TonyEllis
Senior Cruncher Australia Joined: Jul 9, 2008 Post Count: 286 Status: Offline Project Badges: 
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You can use "code" tags. Also stops multiple adjacent spaces being changed to a single space
----------------------------------------begin with "open_square_bracket"code"end_close_bracket" your text end with "open_square_bracket"/code"end_close_bracket" "open_square_bracket" is [ "end_close_bracket" is ] System Project Virt Memory Working Set Work Unit ---------- ------- ------------- ----------- ---------------------- alice arp1 811 729 ARP1_0018019_027_0 alice arp1 811 732 ARP1_0022759_027_1 alice opn1 162 76 OPN1_0012174_08949_0 alice opn1 163 77 OPN1_0012145_11507_0 using "code" tags
using "quote" tags System Project Virt Memory Working Set Work Unit ---------- ------- ------------- ----------- ---------------------- alice arp1 811 729 ARP1_0018019_027_0 alice arp1 811 732 ARP1_0022759_027_1 alice opn1 162 76 OPN1_0012174_08949_0 alice opn1 163 77 OPN1_0012145_11507_0
Run Time Stats https://grassmere-productions.no-ip.biz/
----------------------------------------[Edit 3 times, last edit by TonyEllis at Oct 1, 2020 3:55:41 AM] |
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thunder7
Senior Cruncher Netherlands Joined: Mar 6, 2013 Post Count: 238 Status: Offline Project Badges:
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as I said, it doesn't work for wide lines |
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TonyEllis
Senior Cruncher Australia Joined: Jul 9, 2008 Post Count: 286 Status: Offline Project Badges:
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as I said, it doesn't work for wide lines Sorry, didn't see that otherwise would not have posted. In fact, must be blind as cannot see where you indicated that looking back... What date was your post? Sheridon's Chart, at least on this browser, created a horizontal scroll bar. So assume this was an embedded graphic? So a hack would be to create a thin white only one and add to the append to increase its width. Not really practical though. And keeping to the subject, have an AMD system with only two RAM slots. One broke and that really hurts performance now on Windows 10. Memory went to half and either memory stick will work in the 'good' slot. The slow down is from both less memory and half speed access.
Run Time Stats https://grassmere-productions.no-ip.biz/
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DukeBox
Cruncher Joined: Nov 18, 2004 Post Count: 30 Status: Offline Project Badges:
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Timings were the same, the cpu's are 20 core Xeon V4 Engineering Samples, running at 2.3 GHz on all cores. What type of memory ? Registered, Unbuffered ? Single/Dual CPU ? QDI link ? At least a 20 code CPU will probably be a HCC model otherwise you would have been stuck with a single (dual channel) memory controller. There are so many configuration options that one example is just not enough to determine if this will be the case for every other but in most cases (if not all), using the same timings and total amount, a dual-channel setup will perform better. |
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adriverhoef
Master Cruncher The Netherlands Joined: Apr 3, 2009 Post Count: 2346 Status: Offline Project Badges:
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(*=AVERAGE TODAY) (** time 1850) as I said, it doesn't work for wide lines |
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thunder7
Senior Cruncher Netherlands Joined: Mar 6, 2013 Post Count: 238 Status: Offline Project Badges:
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This is an Asus Z10PE-D16 motherboard, 2 cpu's. Is a QDI link a QPI link? In that case, it's at it's default value from the bios.
As I said, the cpu's are ES models - Engineering Samples. Normal V4 xeons with 20 cores are very expensive. I know this is a single datapoint, and I'd be interested to know if someone has data for other systems, perhaps a current desktop cpu? |
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