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drummers-lowrise
1) Message boards : Number crunching : Badges III (Message 130871)
Posted 52 days ago by Profile FishFryProject donor


These little guys took a while :)
2) Message boards : Number crunching : 2019 Tour de Primes (Message 127526)
Posted 177 days ago by Profile FishFryProject donor
I apologize if this is a dead horse, but I haven't found a direct answer after poring over past threads. Any insight from the team?


Thank you for the responses. Very helpful. Contending with leaving an open thread for GPUs, but I now have a better foundation with which to start!
3) Message boards : Number crunching : 2019 Tour de Primes (Message 127511)
Posted 178 days ago by Profile FishFryProject donor
With a another TdP and month under our belt (shortly), I wonder if anyone else has shared my observation.

I have not been able to limit tasks waiting in the queue. The only common trend I see is Boinc Manager likes to load additional tasks that match the number of processing cores the machine has. Limiting CPU usage helps, but it will not eliminate additional tasks. Based on what I saw, the higher number of cores, the harder it is to limit additional tasks in the queue.

Part of the fun for the competition is to be first. Outside of the competition, I'm just as happy to be DC. Maybe that's the competitive edge: Knowing how to limit queued tasks. ;)

A few weeks back, I saw a post by DeleteNull who mentioned that configuring cc_config.xml can limit queued tasks (understanding Boinc Manager will always pull down new tasks while the active tasks are close to completion). I also read on posts the cc_config.xml has no impact on Boinc Manager for PrimeGrid?

I apologize if this is a dead horse, but I haven't found a direct answer after poring over past threads. Any insight from the team?

Congrats to all this year's winners!
4) Message boards : Number crunching : 2019 Tour de Primes (Message 126689)
Posted 194 days ago by Profile FishFryProject donor

<app>
<name>llrPPSE</name>
<fraction_done_exact/>
<report_results_immediately/>
<max_concurrent>4</max_concurrent>
</app>
<app_version>
<app_name>llrPPSE</app_name>
<cmdline>-t 2</cmdline>
<avg_ncpus>2</avg_ncpus>
<max_ncpus>2</max_ncpus>
</app_version>


Yes I have HT turned off.


If you set CPU usage to 50% (in essence turning off hyper-threading), then you should see only two tasks running per two threads. If your machine still runs more, try <max_concurrent>2</max_concurrent>. On Windows 10, you'll just need to restart BOINC Manager for the app_config.xml to take effect.

As I just saw Scott write, single-threading four tasks on that CPU will probably still beat most of your wingmen! :)
5) Message boards : Number crunching : Conjunction of Venus & Jupiter Challenge (Message 125239)
Posted 215 days ago by Profile FishFryProject donor
Speaking of cleanup - did 'we' just send SoB tasks to ALL? I have a V crappy laptop that is preferenced to only choose GCW Sieve or SGS tasks and it just received a Sob WU that may not have finished in 7 months!!!!


Is it possible your laptop is pointing to a preference configuration set to SoB during the challenge? I noticed with older laptops (curious just laptops), they only pick up preference changes after a reboot. Updating the project retrieves preference updates without restarting BOINC on my desktop computers.

Sometimes I need to reboot laptops for app_config updates as well.
6) Message boards : Number crunching : Conjunction of Venus & Jupiter Challenge (Message 124391)
Posted 230 days ago by Profile FishFryProject donor

1.) There is only a single task for the i5 in the sample. Remember that there is a considerable variation in size of the tasks that were in circulation during the last 60 days.
2.) We don't know what the i7 owners ran concurrently with the 4-threaded SoB tasks. For all we know, they had GPU tasks going in addition.
So the answer is: We cannot conclude anything at all from the two records which you quoted.

But yes, memory performance does have effect on SoB-LLR performance. I tested with different RAM configs, but this was long ago with the v7 application.

--------
(edit)
And remember: If the boinc client fetched more than one task in a single request for more work, then the run time of multithreaded tasks which gets recorded at the server when finished gets semi-randomly corrupted.


Good points to consider. Thank you for adding some more color to the charts.

Good luck, all!
7) Message boards : Number crunching : Conjunction of Venus & Jupiter Challenge (Message 124350)
Posted 231 days ago by Profile FishFryProject donor
In each chart below...


Thank you, Michael!

This is so helpful as most of us have varied CPUs crunching. Could Kaby Lake be that more efficient on a slower CPU? I wonder if the memory configuration influenced these samples:

| 4 | Intel(R) Core(TM) i5-7400 CPU @ 3.00GHz [Family 6 Model 158 Stepping 9] | 1 | 30.335277777777776 | 30.335277777777776 |
| 4 | Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz [Family 6 Model 158 Stepping 9] | 11 | 30.432777777777776 | 101.5621571111111 |


Regardless, very useful benchmarks and your efforts are tremendously appreciated!

8) Message boards : Number crunching : Winter Solstice Challenge (Message 123931)
Posted 245 days ago by Profile FishFryProject donor
Guys - we're all nuts! ^^

Couldn't be happier to be part of the insane asylum :)

Really impressed by all that hardware pointed at GFN-21 and the advancement made. Top 10 results are just astounding. Congrats to all those who cracked 20MM+ !
9) Message boards : Number crunching : PrimeGrid is Moving!!! (Message 122848)
Posted 274 days ago by Profile FishFryProject donor
Well done to the team. 4.5 hours with all that data meant a lot of foresight. Kudos!
10) Message boards : Number crunching : 2019 Challenge Voting (Message 122774)
Posted 277 days ago by Profile FishFryProject donor
I'm guessing there's enough sieving done every day, so I vote for GFNs and LLRs:

llrTRP
llrESP
llrSGS
genefer 17 mega
llrPSP
llrGCW
genefer 18


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