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Posts by SBretz

1) Message boards : Number crunching : GPU upgrade time (Message 70380)
Posted 17 Jan 2021 by SBretz
Post:
Update: The wife's computer is running GPU tasks on the 970 I installed. The older AMD GPU does not run tasks. It probably isn't compatible for GPU workloads. IDK the model number but I remember it was in the 6000 range from about 8-10 yrs ago. It was the highest end model that AMD recommended to run with their first gen of APU's. The only reason it is in the computer is to run the second monitor. As I may have mentioned, the 970 doesn't have the VGA adaptor for her second panel. I think this will eventual give me a reason to upgrade my monitor from a 1080 to a 1440. Then I could use the DVI and usb outputs on the 970 for her dual monitor instead of two GPU's.

As far as GPU computing not running on it earlier, I just had to wait for it to run out of some of the CPU workloads and let it download GPU work units.
2) Message boards : Number crunching : GPU upgrade time (Message 70289)
Posted 29 Dec 2020 by SBretz
Post:
Update. The power supply that came as part of my newegg bundle arrived. I got that installed in my wife's PC along with one of my evga 970's. She has a dual monitor setup and didn't want to loose it so I had to leave the older radeon 6670 in there as the 970 had two DVI ports and two hdmi's. One of the monitors (the junky one) uses the older VGA with not other options for connection.

I do not see her PC running any GPU tasks. Is this a coincidence that there are no GPU tasks or does BOINC not like having two different brand GPUs?


You need an cc_config.xml file that tell Boinc to use all the gpu's it finds in the machine before it will use both gpu's all the time.

This one will work great for that:

<cc_config>
<options>
<use_all_gpus>1</use_all_gpus>
<report_results_immediately>1</report_results_immediately>
</options>
</cc_config>

Copy that using Notepad in Windows to the Boinc folder located at c:\program data\boinc and save it there. Then in the Boinc Manager go to Options, read config files and Boinc should start using both gpu's right away assuming MilkyWay still supports both of your gpu's.


Thanks for the reply Mikey. I did poke around the config thinking it was set to zero. I even changed the "no_gpu" setting to see if that made a change. It ended up removing the GPU options in the computer preferences. I put that back to the way is was.
It might just be coincidence. IDK if the old GPU was even capable of running GPU task, so it may have been only workloads left in the que from running CPU only. I will keep an eye on it. and see if any gpu workloads come up.
3) Message boards : Number crunching : GPU upgrade time (Message 70282)
Posted 27 Dec 2020 by SBretz
Post:
Update. The power supply that came as part of my newegg bundle arrived. I got that installed in my wife's PC along with one of my evga 970's. She has a dual monitor setup and didn't want to loose it so I had to leave the older radeon 6670 in there as the 970 had two DVI ports and two hdmi's. One of the monitors (the junky one) uses the older VGA with not other options for connection.

I do not see her PC running any GPU tasks. Is this a coincidence that there are no GPU tasks or does BOINC not like having two different brand GPUs?

Next, the home theater PC will be getting my old i7-6700k and the other evga 970. I am super stoked to get rid of the old phenom 2 555 (two core, not hyper treading). The new CPU and ddr4 should really make that PC responsive.
4) Message boards : Number crunching : GPU upgrade time (Message 70268)
Posted 23 Dec 2020 by SBretz
Post:

The dip could just be a couple of units finishing at the same time so the gpu is slightly underused as it switches to the next task.


I thought that at first too. I was checking back to the boinc manager when I would see the dip expecting to see a new work unit starting but they would be in the middle of the of a run.

IDK what is causing it. More CPUs/GPU helped a little bit but the largest impact to keep the GPU up on runtime was to throw more instances at it.
I was suprised that I could use such low CPU/GPU.

With 4 instances running it needs only 0.2 CPU's to divide amount all four work loads. The pretty much leaves another CPU thread open.
5) Message boards : Number crunching : GPU upgrade time (Message 70266)
Posted 23 Dec 2020 by SBretz
Post:
It appears that 4 instances is the sweet spot. I am running only 0.05cpus per wu and the gpu is staying near 100%. It occasionly is dipping to 60ish% and then right back up to 99% usage. The times per wu is coming in from as low as 2:08 to 2:36 is the lowest and highest I have seen so far.

I had one computational error, but it was on a CPU only task.
6) Message boards : Number crunching : GPU upgrade time (Message 70265)
Posted 23 Dec 2020 by SBretz
Post:
Interesting...
I noticed when running one instance that there was down time on the GPU so I set the ratio to 4cpu's/1gpu and it stayed up around 99% with some drop offs.
Running 12cpus had not difference so I dropped to 2 cpus. At 4cpus it knocks out a data packet in about 36sec. At 2cpus it drops to 48secs. With one instance running there are still occasional down time dips in the GPU usage graph.
I will play with this some more. I think 2 instances will keep the GPU usage up near 99% all the time, I will just need to dial in the amount of CPU cores I need to feed the GPU consistantly so that it doesn't drop off. This "should" keep the gpu pegged. If not I will go back up to 4 gpu instances and turn down the CPU ratio until I see a drop in GPU usage and then go to the last known 99% usage setting.

With one core/1cpu. The GPU usage will spike up to around 45-60% and the fall off to 0-6%. I suspect the GPU is waiting for the CPU to feed in for data.
7) Message boards : Number crunching : GPU upgrade time (Message 70264)
Posted 23 Dec 2020 by SBretz
Post:
Oh, not computational errors. I am running the latest update of windows 10 pro for now.
I will be downgrading to the home version when my nvme shows up.


PS: sorry, I didn't see the "Edit" button until after I made the second post.
8) Message boards : Number crunching : GPU upgrade time (Message 70263)
Posted 23 Dec 2020 by SBretz
Post:
The 6900xt came in today.
I currently have it set up with 4 instances running with .25cpu cores per card. It looks like it is running through the 1.46 (opencl_ati_101) packets at around 2:10 to 2:30.

This is the first time I have run mulitple instances on one gpu... do I have too much CPU allocated to them? The base set up was 0.988 cpus/1gpu. But I see the modified text in the config file has 0.05cpu/0.5gpus.
Should I be running the cpu one factor of 10 lower than I have now?

PS- This is awesome seeing this new rig chew through so much in so little time.
9) Message boards : Number crunching : GPU upgrade time (Message 70251)
Posted 18 Dec 2020 by SBretz
Post:
17 pcs! That sounds like you are overseeing a computer lab.
10) Message boards : Number crunching : GPU upgrade time (Message 70246)
Posted 18 Dec 2020 by SBretz
Post:
Update: Yesterday I was able to secure a new CPU. I was able to land a 5900x. Tonight I was trying to get a GPU. I missed out on the 6800xt but was able to land a 6900xt. Yeah, it is over priced for its performance, but it should be good for any gaming for good bit of time plus it should be pretty descent at crunching numbers.

I am not sure how you guys "dyno" these cards for these work loads. I will look into it when I get the new system up and running. I may need your help getting numbers if I am too "stoopid" to figure it out myself.
11) Message boards : Number crunching : GPU upgrade time (Message 70210)
Posted 2 Dec 2020 by SBretz
Post:
Stock is pretty bad. It looks like 80% of AMD's silicon fab is going to the consoles so GPU's and CPU's will be pretty hard to get for the next month or two.
12) Message boards : Number crunching : GPU upgrade time (Message 70203)
Posted 28 Nov 2020 by SBretz
Post:
I doubt many of the gaming geeks would be crunching numbers like we nerds do so it may be a bit of a wait.
The cards are pretty hard to get ahold of with the current state of supply. I will let you know when/if I get one and we can go from there.
13) Message boards : Number crunching : GPU upgrade time (Message 70196)
Posted 26 Nov 2020 by SBretz
Post:
Yelp...I could not get one. The search on newegg would not lead to the new cards directly in an effort to thwart scammers' bots.
I will keep trying.

I really want to get rid of these 970's. I am tired of having to turn down the textures and details in games due to the 3.5gb of vram.
14) Message boards : Number crunching : GPU upgrade time (Message 70192)
Posted 25 Nov 2020 by SBretz
Post:
6800/6800XT board partners release their GPU's tomorrow. Fingers crossed that I will get one.
I missed out on the reference card release because I had to take my daughter to school; she doesn't have school tomorrow.
15) Message boards : Number crunching : GPU upgrade time (Message 70181)
Posted 21 Nov 2020 by SBretz
Post:
Don't they still have the dish arrays out West? They used to have the Allen array and there was another that I can't think of name right now. Arecibo was just one source of data from what I understood.
16) Message boards : Number crunching : GPU upgrade time (Message 70179)
Posted 21 Nov 2020 by SBretz
Post:
The new cnda cards are supposed to super fast with fp32/64....but I am not willing to spend that much on a GPU.. plus it may not be that great a games.

Does anyone know if seti uses FP64 as well...for when ever that project comes back around?

- Sam.
17) Message boards : Number crunching : GPU upgrade time (Message 70175)
Posted 20 Nov 2020 by SBretz
Post:
Thanks for the reply.

It looks like the latest and greatest from team red has a better ratio than team green. RDNA2 is 1/16, rtx3000 is around 1/64,

Here is a link that has the fp32/64 numbers.

https://www.techpowerup.com/gpu-specs/radeon-rx-6800-xt.c3694

So I guess I will get and RDNA2 card this time around.
18) Message boards : Number crunching : GPU upgrade time (Message 70173)
Posted 20 Nov 2020 by SBretz
Post:
Its time to retire the old 970 sli setup for something newer. The 970's will be split up and put into other machines that will still continue to do work for the cause...so don't worry about loosing them.
I am torn between the 6800/6800xt and the 3070/3080. Is there any benefit with Cuda over open CL or vise versa? Any of the gpus will be more than enough for the gaming I do so I would like to know if either architecture is better than the other of milkyway. I also do seti, but that project is on break for now.

Any advise would be appreciated.


Thank you,


-Sam




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