PrimeGrid
Please visit donation page to help the project cover running costs for this month

Toggle Menu

Join PrimeGrid

Returning Participants

Community

Leader Boards

Results

Other

drummers-lowrise
1) Message boards : Number crunching : New computer running slow? (Message 134363)
Posted 80 days ago by Arjant2Project donor
Ok didnt now that.
Will try with mt on 6 cores then.
Thanks.
2) Message boards : Number crunching : New computer running slow? (Message 134361)
Posted 80 days ago by Arjant2Project donor
I just installed some new hardware at the office.

Intel i7-9700
16GB RAM (DDR 2400)

Currently testing 321 LLR, 6 tasks (so 2 cores are kept idle for other purposes), no HT. The estimated time is more than 2 days for each unit. Which concurs with the calculation done after 30 minutes (not even 1% per unit finished).

Temperatures are around 70 degrees Celcius, cores are running at 3800Mhz.
Any ideas what might be wrong? I think each unit should be done in less than 24 hours on this specs?
I know it is not the fastest memory, but that can't be responsible for twice the processing time.
3) Message boards : Number crunching : World Maths Day Challenge (Message 133924)
Posted 95 days ago by Arjant2Project donor
thanks for the fun and good results!
4) Message boards : Number crunching : World Maths Day Challenge (Message 133684)
Posted 100 days ago by Arjant2Project donor
I run 12 units, with smt switched off, 1 core per task with an average time of 3283 seconds per task. That seems a big improvement over a Ryzen 7 Pro 1700X which does 8 tasks in 6.593. No clue what a recent Intel does.
I have to find out what kind of effect has when doing more cores per task.


This is just a guess but I'm pretty sure that the herd was always breathing the dust from the horde regardless of the cpu :)

Cheers

AtP :)


Hehe are you trying to get a reaction from the Cows? ;)
I will try to get some cows interested. But these days they are all scattered around the boinc projects but I will try


Time to round them up then, maybe ring the dinner bell and they will all come running? My own Team is scattered far and wide as well but they are beyond communication range.

Working on it! The real herd is only reachable by a front post on our website but that is impossible to arrange for just a challenge.
That is only done for our annual stampede, that would really rally all the cows.
But posting it on our community forum will at least attract the regular cows I hope.
5) Message boards : Number crunching : World Maths Day Challenge (Message 133660)
Posted 101 days ago by Arjant2Project donor
I run 12 units, with smt switched off, 1 core per task with an average time of 3283 seconds per task. That seems a big improvement over a Ryzen 7 Pro 1700X which does 8 tasks in 6.593. No clue what a recent Intel does.
I have to find out what kind of effect has when doing more cores per task.


This is just a guess but I'm pretty sure that the herd was always breathing the dust from the horde regardless of the cpu :)

Cheers

AtP :)

Hehe are you trying to get a reaction from the Cows? ;)
I will try to get some cows interested. But these days they are all scattered around the boinc projects but I will try
6) Message boards : Number crunching : World Maths Day Challenge (Message 133590)
Posted 103 days ago by Arjant2Project donor
That is why I said Avx512 etc because I didnt know which app exactly is working for the AMD 3900X ;)
So the client automaticly uses the right app, that is the answer I was looking for ;)


There's just one app, regardless of the type of CPU you have. (Technically, there's 6 -- a 32 and 64 bit app for each of Windows, Linux, and MacOS -- but you're asking about CPU abilities, not OS platforms. The same app handles all CPU types.)



There used to be a time when you had to manually download the different AVX types, that is why i was asking. (maybe I am wrong and it was at another project which uses those different types)

I run 12 units, with smt switched off, 1 core per task with an average time of 3283 seconds per task. That seems a big improvement over a Ryzen 7 Pro 1700X which does 8 tasks in 6.593. No clue what a recent Intel does.
I have to find out what kind of effect has when doing more cores per task.
7) Message boards : Number crunching : World Maths Day Challenge (Message 133588)
Posted 103 days ago by Arjant2Project donor
That is why I said Avx512 etc because I didnt know which app exactly is working for the AMD 3900X ;)
So the client automaticly uses the right app, that is the answer I was looking for ;)
Ofcourse I know sieving on CPU and GPU is possible, i have been doing that a lot on the GPU because on the CPU is just not effective.

I will do some test runs to see if it competative. I will let you know the results.
Thanks Michael.

Ps with compatative I mean effective. The 3900X is the top of the line for AMD and if the LLR tasks are calculated way faster on a 9900K for example it means for me that it is not worth the power consumption to put my 3900X to work on LLR. I want to donate my cpu power but I do want it to be effective. By thr way Emptying my wallet is already what I have done when building this system. But not with PG primarely in my mind, that is just an extra.
8) Message boards : Number crunching : World Maths Day Challenge (Message 133580)
Posted 103 days ago by Arjant2Project donor
Ok but not going to run an expensive cpu which uses a lot of power if it is not compatitive (efficient). There are projects where AMDs processors are working fine (most projects), so not wasting money here than.
Rather be on a project where the AMD is running efficiently and leave PG up to Intel cpus.

Although your comparison is not really fair since SMT on the AMD causes a major performance hit which is about 40% compared to SMT off (tested on a ryzen 7 pro 1700X by one of the cows on our own forum).
But I dont know what a 3900X does compared to a 9900K.
The 3900X is in most cases the faster CPU but if it is not efficient in PG it seems a waist of the powerconsumption.
9) Message boards : Number crunching : World Maths Day Challenge (Message 133577)
Posted 103 days ago by Arjant2Project donor
It has been a long time since I did LLR tasks in a challenge.
Do you need any special apps for avx512 etc or does the client automaticaly use the right version?
In the past you had to download the right version to speed up the calculations.
Going to use a 3900X btw.
Thanks.


You need to download an Intel CPU. :)

(A very high-end Intel CPU at that.)

AMD doesn't support AVX-512.

Hehe i know but that was just an example. I dont know which AMD uses. Does not answer the question... that is why I am asking...

Unless you say an AMD is useless compared to Intel than never mind and I will put my computer to work at another project.
10) Message boards : Number crunching : World Maths Day Challenge (Message 133575)
Posted 104 days ago by Arjant2Project donor
It has been a long time since I did LLR tasks in a challenge.
Do you need any special apps for avx512 etc or does the client automaticaly use the right version?
In the past you had to download the right version to speed up the calculations.
Going to use a 3900X btw.
Thanks.


Next 10 posts
[Return to PrimeGrid main page]
DNS Powered by DNSEXIT.COM
Copyright © 2005 - 2020 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 1.65, 1.73, 1.82
Generated 19 Jan 2020 | 7:03:11 UTC