Posts by [AF>Amis des Lapins] Jean-Luc
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1) Message boards : News : New work for TF added (Message 6672)
Posted 1 Aug 2020 by [AF>Amis des Lapins] Jean-Luc
Okay, got it.
Thank you.
I can't wait to double my workload for TF !
2) Message boards : News : New work for TF added (Message 6670)
Posted 1 Aug 2020 by [AF>Amis des Lapins] Jean-Luc
Hello,
Do you have any news ?
Will it soon be possible to compute TF WUs with two GPUs simultaneously on a single computer ?
3) Message boards : Number crunching : Trial Factoring (Message 6549)
Posted 1 Jun 2020 by [AF>Amis des Lapins] Jean-Luc
Thank you very much for the idea !
I just gave it a try.
- 1 WU per GPU: 12-13 seconds, GPU Load: 95%.
- 2 WUs per GPU: 18-19 seconds, GPU Load: 100%.
I'm going to leave it running to see if it doesn't make mistakes...
So the RTX 2080 Ti GPU can produce even more !

To do this, you have to enter these parameters in an app_config.xml :

<app_config> <app> <name>TF</name> <gpu_versions> <gpu_usage>0.5</gpu_usage> <cpu_usage>0.5</cpu_usage> </gpu_versions> </app> </app_config>
4) Message boards : Number crunching : Trial Factoring (Message 6545)
Posted 1 Jun 2020 by [AF>Amis des Lapins] Jean-Luc

In all honesty, you really should consider upping the limit from 20 to a higher value because those of us with fast GPU's burn through 20 WU's very quickly. My 2080's and 2080 Supers running at 135W power limit are currently completing the latest WU's in ~31 seconds, while running 2 per GPU. That means I finish 20 WU's in just over 5 minutes. Maybe up the limit to 100, at least?


I agree with this request 100%.
I would even set the limit at 1000, rather than 100 !
At least as long as we're working on the 70-72 bits...
After that, when the number of bits increases to 73-75, you could lower the limit to 100 again.
Honestly, everyone would want at least 6 to 10 hours of work reserve ! That's a minimum on BOINC...
That way, while the server is under maintenance, we can continue the calculations.
Otherwise, we have to download WUs from another project in the meantime, so as not to leave the GPU idle.
5) Message boards : Number crunching : Trial Factoring (Message 6519)
Posted 29 May 2020 by [AF>Amis des Lapins] Jean-Luc
Personally, I don't mind having long WUs to compute, because I have a very powerful GPU.
Short WUs to compute also suit me.
But if you need to test for 78 or 80 bits, I'm willing !
Otherwise, I take what comes...
It all depends on what GIMPS needs in priority.
6) Message boards : Number crunching : Trial Factoring (Message 6508)
Posted 28 May 2020 by [AF>Amis des Lapins] Jean-Luc
For better understanding the next batch will have a better name with current range max. The current batch reached 438M of 1000M max.


Thanks for the "better name with current range max" !
That way we know where we are !

;-)
7) Message boards : Number crunching : Trial Factoring (Message 6498)
Posted 23 May 2020 by [AF>Amis des Lapins] Jean-Luc
Thanks for everything !
I literally took a passion for this project !

;-)
8) Message boards : Number crunching : Trial Factoring (Message 6496)
Posted 23 May 2020 by [AF>Amis des Lapins] Jean-Luc
And ECM factoring methods are not efficient for factoring such large numbers ?

(Because for factoring numbers of 100 or 150 digits, which I do very often, one switches to ECM methods much faster. We don't test such huge trivial factors.)
9) Message boards : Number crunching : Trial Factoring (Message 6494)
Posted 23 May 2020 by [AF>Amis des Lapins] Jean-Luc
I think you're right about the yellow cells !
Thank you for your explanations and for your very informative links !
10) Message boards : Number crunching : Trial Factoring (Message 6492)
Posted 23 May 2020 by [AF>Amis des Lapins] Jean-Luc
What about adding more details on SRBase progress on GIMPS trial factoring?

Looking at these stats as a matrix (line, column) where line is the range and column the bit depth: https://www.mersenne.ca/status/tf/0/0/1/10000

Priority to clean all ranges to 71 bits, on the above link is the 70 bits column.
Right now SRBase is cleaning the position (300M,70 bits) and will go down up to (700M,70bits). Already in the server queue some (400M,70 bits) work. As can be seen 5.1M wus to clean to 71 bits for n range up to 999M.

On a daily basis it is fantastic to see projects progress. Keep an eye on the 70 column and you will see the figures changing, or moving to the right column, or getting out, when a factor is found.



Thank you for the explanation.
Now I understand the meaning of the numbers in this table.

And why are some of the cells yellow ?
11) Message boards : News : server outage / db crash again (Message 6411)
Posted 17 May 2020 by [AF>Amis des Lapins] Jean-Luc
I hope you're keeping your spirits up in the wake of this disaster ! I support you 100%. I wish you good luck to ensure the continuity of this extraordinary project!

As far as I'm concerned, I would prefer that you don't add the missing credits to me. I prefer to receive credits only for calculations that have been used for something. So I don't want to receive credits for lost calculations.

Can we continue the calculations right away or do we have to wait a few hours or a few days ?
12) Message boards : News : New work for TF added (Message 6384)
Posted 9 May 2020 by [AF>Amis des Lapins] Jean-Luc
Thank you very much, I understand much better !
Now I can even calculate myself the kmin and kmax depending on the exponent n and the number of bits...
I have no more questions !

For your information: in 8-9 days, my RTX 2080 Ti calculated about 30,000 tasks (so I discovered 430 factors !) and the calculation time of a task went from 23-24 seconds to 20-21 for 70-71 bits !

I hope I will soon be able to do the calculations with both GPUs together !
13) Message boards : News : New work for TF added (Message 6382)
Posted 9 May 2020 by [AF>Amis des Lapins] Jean-Luc
Thank you very much for these valuable explanations.
My understanding is getting better and better and I will almost be able to answer all the questions about TF for SRBase on the Alliance francophone forum.

I still have one last question, if it's not too complicated to answer here:
I don't understand why the task calculation time is shorter for larger exponents?
For example:
n=250M testingtime is 40 seconds
n=500M testingtime is 20 seconds
n=1000M testingtime is 10 seconds
14) Message boards : News : New work for TF added (Message 6377)
Posted 8 May 2020 by [AF>Amis des Lapins] Jean-Luc
Thank you for your answer !
15) Message boards : News : New work for TF added (Message 6375)
Posted 8 May 2020 by [AF>Amis des Lapins] Jean-Luc
All right, thank you !

I assume the number in the "Successes" column is the number of trivial factors found by each person ?

But if we calculate with SRBase on BOINC, can't we see our name separated from all the others, with "Attempts" and "successes" columns ?
16) Message boards : News : New work for TF added (Message 6373)
Posted 8 May 2020 by [AF>Amis des Lapins] Jean-Luc
Can we know if we have found prime factors and if so, how many ?
17) Message boards : News : New work for TF added (Message 6369)
Posted 29 Apr 2020 by [AF>Amis des Lapins] Jean-Luc
OK, thanks for the detailed explanations !
I'll get right down to the calculations.
18) Message boards : News : New work for TF added (Message 6363)
Posted 28 Apr 2020 by [AF>Amis des Lapins] Jean-Luc
OK !
Thank you for your answer.

I'm finishing some WUs from another BOINC project and tomorrow, I start calculations with a RTX 2080 Ti.
I tried to calculate some TN WUs today.
The calculation time of a WU is 22-23 seconds.
That will make a very large number of WUs per day.
I had never seen such a short calculation time for a WU for GPU on BOINC before !
19) Message boards : News : New work for TF added (Message 6360)
Posted 28 Apr 2020 by [AF>Amis des Lapins] Jean-Luc
For GPU72, it was not recommended to compute two WUs together on two GPUs installed on the same computer.

Is this still the case for TN ?
Or can I run TN calculations on each of my two GPUs on the same computer ?




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