Posts by Mr P Hucker
log in
1) Message boards : Science : AMD COVID-19 HPC Fund (Message 2258)
Posted 9 Mar 2021 by Mr P Hucker
(apocalyptic mode on) there will be another one (apocalyptic mode off)
The pandemic will be over by the time you get those resources lol

The government already has the plans set out for the next one, this was just a test of obedience, and we failed like sheep.
2) Message boards : Science : AMD COVID-19 HPC Fund (Message 2231)
Posted 6 Mar 2021 by Mr P Hucker
Do you finally have access to the resources?

AMD are being a bit weird here, this is like promising a kid a bike for christmas, but not telling him which christmas.
3) Message boards : Number crunching : FMA application for windows_x86_64 (Message 2206)
Posted 14 Feb 2021 by Mr P Hucker
Depends on the science application and whether most of the application memory read/writes can fit in the cpu L3 cache.

Some projects really can be sped up if the work can fit all in the L3 cache.

Other projects don't really need to do much data movement out to main memory until the task compute is entirely finished.

So the speed of main memory is not that important since only two accesses are needed, once to get the data into the cpu and once out to main memory and storage to upload the result.

As with most things related to BOINC, YMMV depending on individual project quirks.

Maybe those projects that don't quite fit in the cache are only using RAM occasionally, so my doubling of the RAM speed was still negligible. It didn't speed up the game Fallout 4 either, despite people saying that game in particular would be faster. I guess the Ryzen has a good large cache.
4) Message boards : Number crunching : FMA application for windows_x86_64 (Message 2202)
Posted 13 Feb 2021 by Mr P Hucker
Other important factors while comparing computers, for our application, are the RAM speed and CPU cache size.

I'd like to learn about this.

I changed my PC from single channel to dual channel RAM, effectively doubling the RAM speed, but nothing went faster, not one of the 10 projects I run. I guess the cache inside the CPU outweighed the slow RAM.
5) Message boards : Number crunching : FMA application for windows_x86_64 (Message 2190)
Posted 2 Feb 2021 by Mr P Hucker
It happens that the performances of the various versions are almost the same.

I am not so sure about that! I observed: tn-grid Server starts to send out only one App type to a certain computer after a while and does not send other Apps to re-check from time to time, if another App type would work better.

Why would it need to? Unless your computer has changed, eg you upgraded it. Which should cause a re-evaluation, not sure how Boinc or the server would know you changed it though.
6) Message boards : Number crunching : FMA application for windows_x86_64 (Message 2187)
Posted 1 Feb 2021 by Mr P Hucker
In Linux, my 3900X, 3950X and Epyc 7402P settled on FMA exclusively as fastest app. Takes about two weeks trying out AVX, SSE2 and FMA before declaring a winner.

How come my two fast machines (see links in last post) are almost identical? I can't see how that would change in two weeks, the timings are indistinguishable. Unless it's an OS thing, I only use Windows 10.

It happens that the performances of the various versions are almost the same. If there is not a clear winner the server simply don't care about what to send. Other important factors while comparing computers, for our application, are the RAM speed and CPU cache size.

So the server actually calculates which is the most efficient version to send to each machine? That's cool :-)

So this "two weeks" being discussed is the server seeing which works best?
7) Message boards : Number crunching : FMA application for windows_x86_64 (Message 2184)
Posted 1 Feb 2021 by Mr P Hucker
In Linux, my 3900X, 3950X and Epyc 7402P settled on FMA exclusively as fastest app. Takes about two weeks trying out AVX, SSE2 and FMA before declaring a winner.

How come my two fast machines (see links in last post) are almost identical? I can't see how that would change in two weeks, the timings are indistinguishable. Unless it's an OS thing, I only use Windows 10.
8) Message boards : Number crunching : FMA application for windows_x86_64 (Message 2181)
Posted 31 Jan 2021 by Mr P Hucker
I just deployed the FMA optimized version of the application for Windows x64. It had problems, some time ago, with the early releases of the AMD Ryzen cpus (although, if I remember correctly, the problem were solved with BIOS upgrades).
The application is marked as "beta", if you you want to try it out you need to enable "Run test applications" in your profile.

I notice FMA and AVX running on my Ryzen 9 3900XT (brand new, with brand new motherboard with latest BIOS) and my i5 8600K. The FMA ones don't seem to be any faster than the AVX tasks. Are they doing more or different calculations?

Also, why with both AVX and FMA, is the Ryzen so slow compared to the i5? It should be just over 3/4s of the speed per core, but it's only 1/2 the speed.

I don't know much about FMA and AVX, but from what I've read, FMA is a subset of AVX, which has me even more confused. Then there's FMA3 and FMA4, and Intel and AMD choosing one then the other, then going back again....

My Ryzen's completed tasks: http://gene.disi.unitn.it/test/results.php?hostid=63548&offset=0&show_names=0&state=4&appid=

My I5's completed tasks: http://gene.disi.unitn.it/test/results.php?hostid=65175&offset=0&show_names=0&state=4&appid=
9) Message boards : Science : AMD COVID-19 HPC Fund (Message 2038)
Posted 23 Oct 2020 by Mr P Hucker
Server can't mostly support the crunching power we have now with few cpus, it is "useless" to put any effort in a GPU version.What for?


It seems to manage ok now. But yes they might need a bigger one (or just upgrade it) for GPUs. It can't cost that much for some RAM or a disk or something. And if work can be completed many times faster, well that's the whole point of this science. To get the answers quickly and save lives!
10) Message boards : Science : AMD COVID-19 HPC Fund (Message 2032)
Posted 22 Oct 2020 by Mr P Hucker
Must get a better server before releasing GPU WUs.
Go CUDA go fast.


OpenCL please. I can't afford overpriced Nvidia cards.
11) Message boards : Science : AMD COVID-19 HPC Fund (Message 2028)
Posted 22 Oct 2020 by Mr P Hucker
How much do they need? How many of us are there? I'm sure a lot of us would crowd fund it. It wouldn't be very expensive between 1000 people. SETI raised quite a bit of cash by asking folk.



They can't raise resources from crowdfunding because they are based in the Thrento University, so they need to follow the "official " way, which is more longer and buricratic


If they can't accept charitable donations, the bureaucrats need sacked right now. That is absolutely beyond a joke.
12) Message boards : Science : AMD COVID-19 HPC Fund (Message 1998)
Posted 11 Oct 2020 by Mr P Hucker
They submitted a grant request for a new server several months. Not sure how that went.
If they can't get a new server, then they cannot have many more volunteers.
That's why this project isn't listed in the official BOINC project list.


How much do they need? How many of us are there? I'm sure a lot of us would crowd fund it. It wouldn't be very expensive between 1000 people. SETI raised quite a bit of cash by asking folk.

Looks like the same on other BOINC forums:

Type the URL, select it and hit the URL button. Then add = on the first URL bracket so it looks like [url=Enter the URL]. You then name it whatever you want in between the 2 brackets.

Gene@home Science Status


Ah, thanks. I guess there's a manual somewhere. I thought it maybe wasn't a function here, since on (I think) Einstein, you get a box asking for the address and the wording. But they have a non standard setup.
13) Message boards : Science : AMD COVID-19 HPC Fund (Message 1996)
Posted 11 Oct 2020 by Mr P Hucker
They dont want to.
Server cant really produce enough WUs for more users


This http://gene.disi.unitn.it/test/gene_science.php implies there's about 5 years work to do on the current project, not to mention the on hold ones. I'm sure they'd love more computing power.

By the way, how do I make the URL get named in here (i.e. some of the words of this sentence become the link), is that possible with BB tags or whatever they're called? I've seen people do it in other forums but maybe they use different code.
14) Message boards : Science : AMD COVID-19 HPC Fund (Message 1995)
Posted 11 Oct 2020 by Mr P Hucker
There is no GPU app available at TN-Grid.


So what is running on the Radeons AMD lent you?


Nothing at the moment, AMD will grant us access in about a month.

Anyway, we will use them to try to develop a slightly modified version of our algorithm, suitable for gpu-style parallelization. Also we will use their specific deep learning power to help us better understand the whole thing (gene expansion, covid, causality etc).


Looking at the specs of those AMD things, they don't seem like much more than some of the volunteers I know crunching with several cards for Milkyway and Einstein. If you can get OpenCL working nicely, collectively we'll be able to do far more than that AMD thing. Have fun playing with it (or tearing your hair out trying to get the program converted! Folding@home managed, WCGrid and Rosetta didn't.) I have 19 TFlops of GPU sat here....
15) Message boards : Number crunching : Lost credits? (Message 1994)
Posted 11 Oct 2020 by Mr P Hucker
This is very strange, we did not suffer any db crash or similar nasty things (you are also the first, if I remember correctly, that has this problem). Did you start crunching within the gridcoin group? Anyway, if you can tell me (with some proof) the number of missing credits I can add them to you manually.


I've no idea how to find out how many missing credits I had. But I made posts 3 years ago in the forums, stating I ran 4 computers, so I'm sure I got some credits. It's no big deal, I don't mind if they're irrecoverable. There seems to be no evidence of my computers from back then in my account either, although I don't know how long those records stay. I can only see the current 6 I just attached. With more powerful machines now I'll get the credits back faster than I generated them in the first place! 66 cores available. At least my account's still here. Climate Prediction deleted it altogether!
16) Message boards : Science : AMD COVID-19 HPC Fund (Message 1990)
Posted 10 Oct 2020 by Mr P Hucker
Considering the original announcement of the experiment back own 2018, if I am not mistaken the dataset is a floating point matrix. Not knowing exactly what precision is needed for those computations (F16/32/64 precision), with 8 x Radeon Instinct MI 50 accelerator compute units, the peak compute capability at F16 would be 212 TFLOPs, the min at F64 at 52.8 TFLOPs. (Data according to https://www.amd.com/en/products/professional-graphics/instinct-mi50-32gb)

As of today (09/30) on the server page:
16771.51 GFLOPs of all volunteers which translates to ~16.8 TFLOPs.

The ratio by which AMD's sponsored accelerators surpass the crunchers' current computing power is a whopping ~3.1 x (at the lower F64 end).

Hope there is no flaw in my quick calculations.... If this were true anyway, that would be awesome for TN-Grid!!


TN Grid only has 683 users with recent credit. If it was publicised more, there would be more users. It's not in the list of projects to choose within Boinc, or here: https://boinc.berkeley.edu/projects.php I only heard about this project through a mention on another project's forum.
17) Message boards : Number crunching : Lost credits? (Message 1988)
Posted 10 Oct 2020 by Mr P Hucker
I was here 3 years ago. I just came back and found I have 0 credits? Who ate them?
18) Message boards : Science : AMD COVID-19 HPC Fund (Message 1987)
Posted 10 Oct 2020 by Mr P Hucker
There is no GPU app available at TN-Grid.


So what is running on the Radeons AMD lent you?
19) Message boards : Number crunching : Error: disk limit exceeded (Message 1121)
Posted 1 Oct 2017 by Mr P Hucker
0% must be ok, that's the default on all my machines and I've never changed it. 0 must mean infinite.

Where do I find the log?

P.S. Uninstalling Malwarebytes fixed the problem with all three projects. Strange as Malwarebytes didn't inform me it was blocking anything.
20) Message boards : Number crunching : Error: disk limit exceeded (Message 1119)
Posted 30 Sep 2017 by Mr P Hucker
The machine has about 20GB free (not 12GB as I misremembered above).

Set to:
"Use at most 0GB disk space" (which means no limit).
"Leave at most 0GB disk space free"
"Use at most 0% of total disk space"
"Write to disk at most every 30 seconds"
"Use at most 0% of page file"

These are the settings it's always had, and the settings my other 3 machines have. And the problems only started on this one machine a few days ago. It's doing the same with the two other projects (SRBase and Yafu).

P.S. I wasn't emailed when you replied, yet I'm subscribed to the thread.


Next 20

Main page · Your account · Message boards


Copyright © 2023 CNR-TN & UniTN