Posts by Peter Hucker
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1) Message boards : Number crunching : WUs sticking on AMD RX 560 GPU (Message 67579)
Posted 14 days ago by Peter Hucker
Do you mean where yours says "(Cypress/Hemlock)"? Look at mine, they just say "AMD Radeon R9 200 Series (4096MB) OpenCL: 2.0" - no driver version, but they work fine. Similar to his "AMD Radeon (TM) R9 380 Series (4096MB) OpenCL: 2.0", so I doubt that's the problem.

What do you mean by "2nd user"? Are you referring to a WU being run by more than one person to check it's valid? If so I can't see why that doesn't work with GPUs, both users are doing precisely the same work, and they never fail on my GPU.
2) Message boards : Number crunching : WUs sticking on AMD RX 560 GPU (Message 67575)
Posted 15 days ago by Peter Hucker
Why would Einstein recognise his drivers and not Milkyway? Don't they both use the same OpenCL? Neither needs anything fancy like Virtualbox?
3) Message boards : Number crunching : WUs sticking on AMD RX 560 GPU (Message 67571)
Posted 15 days ago by Peter Hucker
No computation errors on my R9 290 or my RX 560. Seems to be limited to certain cards.
4) Message boards : News : New Separation Runs 7 May (Message 67532)
Posted 29 days ago by Peter Hucker
I didn't notice my projects slowing when I upgraded to 10.

And this says it's free if you don't want a few unimportant personalisation things. I have one machine not activated and it runs fine. It's not my main machine so maybe a few little things might annoy me if I was using it directly, but it's fine for Boinc which is all it does:

https://www.howtogeek.com/244678/you-dont-need-a-product-key-to-install-and-use-windows-10/
5) Message boards : News : New Separation Runs 7 May (Message 67529)
Posted 29 days ago by Peter Hucker
I never thought about the OS, didn't think that would make a difference. There are people still using 7? 10 is free you know....
6) Message boards : News : New Separation Runs 7 May (Message 67521)
Posted 20 May 2018 by Peter Hucker
Have trashed about 113 tasks so far on Windows7 64 bit and BOINC 7.8.3.

These tasks have issues.


They're working on both my AMD GPUs. Perhaps there's a bug in the Nvidea GPU code? Has anyone else got a Nvidea GPU that can tell us whether they work ok or not?
7) Message boards : Number crunching : WUs sticking on AMD RX 560 GPU (Message 67516)
Posted 20 May 2018 by Peter Hucker
It's only running Boinc. Milkyway on the RX 560 GPU, and Asteroids on the six core i5.

Again it's stopped doing it after being running for a while. Very odd.
8) Message boards : Number crunching : GPU stopped due to quad core task (Message 67514)
Posted 20 May 2018 by Peter Hucker
Ah, it's happened again and I think I was wrong to blame the 4 core Milkyway nbody. This time I have 4 1-core Milkyway modfits running on my quad core CPU, and nothing on the GPU, with only Einstein 1GPU+1CPU tasks queued. The reason being the modfits are on high priority as they're the second choice for the processor and were downloaded when Asteroids had no work left. I guess Boinc is making the most sensible choice after all, I think it always fills all cores and GPUs whenever possible, but if something has little deadline left, that has to come first.
9) Message boards : Number crunching : WUs sticking on AMD RX 560 GPU (Message 67502)
Posted 19 May 2018 by Peter Hucker
When I restarted the computer just now (for another reason), it's now stalling again. Maybe the card's dodgy and needs to warm up?!
10) Message boards : News : New Separation Runs 7 May (Message 67501)
Posted 19 May 2018 by Peter Hucker
All working fine here on two GPUs (R9 290 and RX 560), although some were stalling for an extra 4 minutes (on top of the usual 5 minutes GPU runtime) on my brand new machine (the RX 560). But now they're not stalling for the last 24 hours. Yet when I restarted the computer just now, it's now stalling again. Maybe the card's dodgy and needs to warm up?!
11) Message boards : Number crunching : Which GPU? (Message 67500)
Posted 19 May 2018 by Peter Hucker
n-body is a cpu application.


It is at the moment, but they say they'll make it into GPU once testing is complete.
12) Message boards : Number crunching : WUs sticking on AMD RX 560 GPU (Message 67496)
Posted 19 May 2018 by Peter Hucker
For some reason it's stopped doing it! The last 24 hours of tasks (one every 5 minutes) have been almost identical times. There are no more taking up to 9 minutes. Oh well, I guess that's good news, although I'll never figure out what was wrong. I've changed nothing at this end, so perhaps the earlier 4-bundle WUs were buggy?
13) Message boards : Number crunching : Which GPU? (Message 67489)
Posted 18 May 2018 by Peter Hucker
I can't find anything on nbody being 64 or 32 bit in the last 6 years. Can you tell me where your post is as I'd like to see any answers.

The 7970 (in the UK at least) is the best flops per £ for SP flops aswell, so I'd still go for it no matter what it's computing.
14) Message boards : Number crunching : Which GPU? (Message 67487)
Posted 18 May 2018 by Peter Hucker
https://docs.google.com/spreadsheets/d/1ImSDoLeuZFvmO6xoMpy2VMs9Du_6sHT5GqcORMtx2tQ

That link should work for my Spreadsheet. Still a work in progress and there's some missing data and some extra fluff like the "fake rank" column where I decided to try and assign a very-rough estimate of overall general performance based on Cores*Clockspeed.

The main focus is showing 3 main variables (GFLOPS, Price, Watts) and how they interact.

Unfortunately due to locking/merging certain cells I cannot dynamically sort the columns how I would like. Still determining if there is a way I can do that.


This is part of your spreadsheet (the best 43 for DP FLOPS) with UK prices from Ebay including 2nd hand cards when available, then sorted by DP FLOPS per £. I'll be getting the Radeon HD 7970:

https://www.dropbox.com/s/twgw7qjf0bkqoa2/Boinc%20card%20choice.xlsx?dl=0
15) Message boards : Number crunching : Which GPU? (Message 67486)
Posted 18 May 2018 by Peter Hucker
I guess you're right. When I (stupidly) tried to make money with altcoin mining, I bought several graphics cards brand new. For boinc I tend to use what I have lying around or purchased for other purposes. I've got my own computer which is for games, watching TV, internet etc. I've got some made out of scrap parts people have given to me. And I've got a few that are under test while I construct them for customers.
16) Message boards : Number crunching : Which GPU? (Message 67482)
Posted 18 May 2018 by Peter Hucker
I notice graphics card manufactures are designing cards to work well with coin mining, so why don't they design them to work well with boinc? We want double precision! And we want it now!
17) Message boards : Number crunching : WUs sticking on AMD RX 560 GPU (Message 67480)
Posted 17 May 2018 by Peter Hucker
Both machines are running Asteroids on their CPUs. The good machine has an old 4 core i5 3570K. The offending machine has a brand new i5 8600K. So the machine that's playing up has a less powerful GPU with a CPU that has more cores, each core with more power than the good machine, so I can't see that limiting anything. The WUs are also not showing much in the way of CPU usage, as I'd expect with a faster CPU and slower GPU. When they pause, the main timer ticks on, but not the CPU timer, and the % complete sticks for a minute.

I'll have to look at it tomorrow to see if the GPU usage falls off when it sticks, by looking at the MSI Afterburner software. I neglected to setup remote access for it and it's not where I can easily connect a monitor just now.
18) Message boards : Number crunching : WUs sticking on AMD RX 560 GPU (Message 67478)
Posted 17 May 2018 by Peter Hucker
1 WU at a time.

Pauses at random points in the middle.

Only got the card 2 days ago, and it's been like that for the whole time.
Here's the results from the offending machine, note the varied runtimes:
https://milkyway.cs.rpi.edu/milkyway/results.php?hostid=774136&offset=0&show_names=0&state=4&appid=
Here's the results from the nicely running 290 machine, note the identical runtimes:
https://milkyway.cs.rpi.edu/milkyway/results.php?hostid=769926&offset=0&show_names=0&state=4&appid=

Windows 10 Home, freshly installed 2 days ago with all updates and latest Radeon driver. All hardware is brand spanking new. Windows hasn't been activated, but should that matter?

I checked it's not overheating, and it's running at 55C. It's in a well ventilated case with five 120mm case fans!

The only thing I can think of that may be missing are the Virtualbox extensions. I had to install these to make another project work on the good machine. The offending machine I just installed the latest boinc from the webpage which includes virtualbox, but no mention of extensions. But I don't think Milkyway needs these?
19) Message boards : Number crunching : WUs sticking on AMD RX 560 GPU (Message 67476)
Posted 17 May 2018 by Peter Hucker
On my R9 290, the WUs run smoothly all the way through. But on my RX 560, they seem to pause now and again. What looks like it should take 4.5 minutes takes 9.5 minutes.
20) Message boards : Number crunching : Which GPU? (Message 67474)
Posted 17 May 2018 by Peter Hucker
It's the emulation I was considering. I read somewhere something like "for some reason Milkyway doesn't use well known algorithms to run on single precision hardware, but Einstein and SETI do". As far as I know the emulator would use two single precision calculations to get a double precision one done, but single precision on most graphics cards is well more than twice as fast.


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