Posts by sph

1) Message boards : Number crunching : Ryzen 5 5600X has just appeared in CPU statistics (Message 100038)
Posted 15 Dec 2020 by sph
Post:
Other projects that have Tasks that don't have fixed runtimes give a much better indication of a system's performance. The sooner it produces a Valid result, the more powerful it is.

Thanks for the feedback Grant

Without finding a valid completed task, here or on another project.... a bit hard to find a way to compare performance on BOINC. I have seen all the reviews (including Phoronix, many thanks boboviz for the link). Now just need confirmation of BOINC performance.

If anyone with a Vermeer processor can chime in, that would be most appreciated.
2) Message boards : Number crunching : Ryzen 5 5600X has just appeared in CPU statistics (Message 100035)
Posted 15 Dec 2020 by sph
Post:
Ryzen 9 5900X and Ryzen 9 5950X have also entered the list. Yet to see Ryzen 7 5800X (doesn't seem to be that popular)

The Ryzen 5 5600X has slid down the listing as the number of 5600X CPUs grow. This latest generation of AMD CPUs are not living up to the AMD hype at the moment. Currently performing same as, or worse than the previous generation.
3) Message boards : Number crunching : Ryzen 5 5600X has just appeared in CPU statistics (Message 99819)
Posted 30 Nov 2020 by sph
Post:
Ryzen Vermeer (5000 series) CPU has now appeared in the CPU statistics page.

CPU model	                                                 Num. computers	cores/computer	GFLOPS/core	GFLOPs/computer
AMD Ryzen 5 5600X 6-Core Processor [Family 25 Model 33 Stepping 0]	11	   11.45	5.84		66.85

Interested to see if the numbers improve over the next few weeks.
4) Message boards : Number crunching : Problems and Technical Issues with Rosetta@home (Message 99244)
Posted 5 Oct 2020 by sph
Post:
Issue with 50% of all Rosetta tasks on this PC.:
https://boinc.bakerlab.org/rosetta/show_host_detail.php?hostid=4975041
Tasks will run for 50000 seconds yet only yield 6.5 points to 45 points. The other 50% of Rosetta tasks on this PC work as expected.
All other PCs are fine.
I have removed Rosetta from PC and run other projects, which work as expected.
Re-added Rosetta. Tasks worked well for 4 days, then reverted back to the above failure pattern.
The pc has no detected issues.
As Rosetta is working well on my other PCs, the error is obviously only shown under specific conditions.


Further information on this issue:
If I abort these tasks after 8 hours, credit is awarded at the expected level of work completed. I can only assume the aborted tasks would result is the low credit level, but based on current trend for this pc, this is a safe assumption.
The credit is not awarded immediatley, but is awarded before the task is completed by another pc.
5) Message boards : Number crunching : Problems and Technical Issues with Rosetta@home (Message 99243)
Posted 4 Oct 2020 by sph
Post:
Issue with 50% of all Rosetta tasks on this PC.:
https://boinc.bakerlab.org/rosetta/show_host_detail.php?hostid=4975041
Tasks will run for 50000 seconds yet only yield 6.5 points to 45 points.
There’s a problem somewhere that’s causing those tasks to get stuck without performing much useful work. The lines in the output like
BOINC:: CPU time: 50422.3s, 36000s + 14400s[2020-10- 4 18:25: 5:] :: BOINC
come from the watchdog ending the tasks 10 hours after their target 4-⁠hour run time. It’s odd that they validate as successful under those circumstances.

That machine is running the 32-⁠bit Rosetta application, which I suspect doesn’t get much testing these days. Perhaps there’s a bug in the application itself, or some compatibility issue with the OS environment, or even something strange going on with the virtualisation. Hard to say.


Hi Brian
Saw the same message (and unusual error messages in others WUs) and the unexpected successful completion... hence my hunch on an error in the app.
Didnt think of the 32 bit angle, thanks for highlighting this aspect. This may definitely be a contributing factor.

Looks more and more like a format for this machine, but wont be able to schedule this for 2 - 3 weeks..... so will continue to tinker with it till then.
6) Message boards : Number crunching : Problems and Technical Issues with Rosetta@home (Message 99240)
Posted 4 Oct 2020 by sph
Post:
Issue with 50% of all Rosetta tasks on this PC.:
https://boinc.bakerlab.org/rosetta/show_host_detail.php?hostid=4975041
Tasks will run for 50000 seconds yet only yield 6.5 points to 45 points. The other 50% of Rosetta tasks on this PC work as expected.
All other PCs are fine.
I have removed Rosetta from PC and run other projects, which work as expected.
Re-added Rosetta. Tasks worked well for 4 days, then reverted back to the above failure pattern.
The pc has no detected issues.
As Rosetta is working well on my other PCs, the error is obviously only shown under specific conditions.
Just had a look at those WUs on my systems, and there are some WUs that pay out considerably less Credit than others, but no where near as low as what yours are doing.
And some of those with low Credit have produced many more Decoys than some of those with much higher Credit.
The only difference i can see is that i've process a lot more of them- more cores & threads in use & using the default processing time.

The benchmarks on that system are OK, and the system isn't losing time to doing non-crunching work, so i can't think of any particular reason for such a variation in Credit granted (although i do recall that someone had a host several months back that was exhibiting similar odd Credit payouts, but i can't remember the result of that particular issue)).




The amount of Credit granted depends on the amount of work done- which is the number of Models completed.
2 WUs of the same type running on the same system running for the same length of time may complete a similar number of Models, but one may produce only 1 Decoy, the other may produce hundreds. But both should get similar amounts of Credit as they did similar amounts of work (number of Models completed), even though the number of Decoys produced is different.

Processing a Task for a longer period will result in more Credit for that Task- but the Credit per hour will still be on par with processing it for a much shorter period of time. The only way to get more Credit per hour is more cores & threads, and/or higher clock speed and/or greater IPC (Instructions Per Clock).


Hi Grant
+1 on all feedback.
This is an older gen PC that has been able to contribute at the level expected of this generation pc. The latest optimisation of the WU seems to has introduced issues peculiar to this PC config. It is a linux virtual box VM on a windows host whereas an identical PC running Linux on the host is running fine.
If Admins cannot track the issue, I may just format the host as Linux and be done with it. Some issues dont justify the time required to debug.
Just hoping others may have also seen similar issues.

EDITS: fix typo and format
7) Message boards : Number crunching : Problems and Technical Issues with Rosetta@home (Message 99234)
Posted 4 Oct 2020 by sph
Post:
Issue with 50% of all Rosetta tasks on this PC.:
https://boinc.bakerlab.org/rosetta/show_host_detail.php?hostid=4975041
Tasks will run for 50000 seconds yet only yield 6.5 points to 45 points. The other 50% of Rosetta tasks on this PC work as expected.
All other PCs are fine.
I have removed Rosetta from PC and run other projects, which work as expected.
Re-added Rosetta. Tasks worked well for 4 days, then reverted back to the above failure pattern.
The pc has no detected issues.
As Rosetta is working well on my other PCs, the error is obviously only shown under specific conditions.






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