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Posts by Mr P Hucker

21) Message boards : News : Separation Application Shutting Down on Tuesday, Jun 20th (Message 76244)
Posted 13 Jul 2023 by Mr P Hucker
Post:
We're not talking about BOINC's built in benchmark. Which in itself is worthless. We're talking about benchmarking software such as Cinebench, 3DMark and others.

Some people are just too dumb to read about those benchmarks and see what they are actually benchmarking. They just look at the numbers like wow, that must be good.

Tired of repeating myself to someone who refuses to learn anything.
And I'm tired of you not understanding it's very easy to write a benchmark which tests everything, then you could have a gaming score, a video editing score, a Boinc type score, etc, etc. All you need is a bunch of instructions of the type used in these projects.
22) Message boards : News : Separation Application Shutting Down on Tuesday, Jun 20th (Message 76243)
Posted 13 Jul 2023 by Mr P Hucker
Post:
I you are interested in CPU-x verses CPU-y buy one of each and experiment to your hearts content. The rest of us mostly don't care.
When they cost a grand each, that's a preposterous thing to do.
23) Message boards : News : Separation Application Shutting Down on Tuesday, Jun 20th (Message 76239)
Posted 11 Jul 2023 by Mr P Hucker
Post:
The problem is do you run Boinc at 100% cpu usage or 90% or even 80 or less percent? That all needs to be factored in when you are using someone elses benchmark numbers. We can 'assume' alot of things but if you don't do it yourself there are ALOT of variables that can affect how benchmark numbers are arrived at.
Those won't make that much difference. Anyway all I'm interested in is comparing CPU x with CPU y. The benchmark isn't like Boinc, it always runs 100%.
24) Message boards : News : Separation Application Shutting Down on Tuesday, Jun 20th (Message 76232)
Posted 11 Jul 2023 by Mr P Hucker
Post:
I don't know what your argument is. I posted a screenshot that explained how that web site got their benchmark totals. It claims to use some "top secret formula" which basically means, they have no idea. Just plugging in numbers. I avoid sites that don't go into detail on how they get their results because it's poppy cock at best.
You said the sites were guessing, but they don't have to get a CPU themselves to test it, if the benchmark suite they use is available to the public, which a lot are, they can look at what scores users got.

There are BILLIONS of possible combinations. You want to write something that can emulate all that. Go ahead.
There are a manageable number of instructions types, eg AVX. There's cache size and speed. A reasonable number of things to look at.

Benchmark software developers are only going to write benchmarks for their target audience. As I have said, multiple times. They're just for gaming, office work and other similar stuff.
I doubt Boinc is all that different to other programs.
25) Message boards : News : Separation Application Shutting Down on Tuesday, Jun 20th (Message 76230)
Posted 10 Jul 2023 by Mr P Hucker
Post:
No reviewers buy or get free samples of EPYC (or any server grade CPU) because that's not their target audience. The benchmark you think you found for the 7742, the site doesn't even own it. They're just "guessing" what it can do, which is the wrong way.
I assumed if they haven't got their own, they use tests users have done with their software and average them. I know some do. I've run benchmark software on my own computer then it lets you compare with other people who have used it, so you know if your CPU is working properly.

There is no such thing as a "end all, be all" software suite that can test every possible thing a CPU can do.
Why on earth not? Just write a program which does each of the sorts of calculations proper programs do.

As I said before. Benchmarks you find on sites like that do not benchmark for the niche market BOINC is in.

They target gamers mostly, but also office work and audio/video production/editing.
They give a score for different types of calculation. Surely Boinc falls into one of those.
26) Message boards : News : Separation Application Shutting Down on Tuesday, Jun 20th (Message 76221)
Posted 10 Jul 2023 by Mr P Hucker
Post:
Oh sorry, Toms Hardware does that
Does Tom's Hardware have benchmarks for the two aforementioned CPUs (mine and Ian&Steve's) which agrees with Boinc's speed?
27) Message boards : News : Separation Application Shutting Down on Tuesday, Jun 20th (Message 76219)
Posted 10 Jul 2023 by Mr P Hucker
Post:
Why is a benchmark not simply running a test suite? When I find a list of benchmarks on a website, they should have run a variety of programs to come up with that value.
In the beginning because people didn't want to run something they weren't getting credit for, nor did it help the Science the Project was trying to do as everyone essentially ran the same mini task.
I was asking why things like cpubenchmark.net don't use a program which tests all the aspects of a CPU.
28) Message boards : News : Separation Application Shutting Down on Tuesday, Jun 20th (Message 76217)
Posted 10 Jul 2023 by Mr P Hucker
Post:
Bench marks are not the be all and end all for the testing of a CPU, as no single bench mark does every thing (at least as far as I have seen), it there was a single bench mark that could test every thing then they would not have to run a "Test Suite" to see how a CPU preforms they could just run one programme.
Why is a benchmark not simply running a test suite? When I find a list of benchmarks on a website, they should have run a variety of programs to come up with that value.
29) Message boards : News : Separation Project Coming To An End (Message 76212)
Posted 8 Jul 2023 by Mr P Hucker
Post:
personally I think he should just purge/delete them to cleanup anything in this kind of pending-limbo state.
Agreed, although maybe Boinc server isn't that simple? I can imagine it getting annoyed if you just deleted files. If Tom's a physicist who doesn't know much about the Boinc server software, it may be easiest to tell it to clean itself up.

It seems they've all gone anyway. So the only thing left is people without a check, so you don't get credit, not the end of the world.
30) Message boards : News : Separation Project Coming To An End (Message 76204)
Posted 7 Jul 2023 by Mr P Hucker
Post:
Amicable numbers for gpu used 10 gb of ram
I seemed to use 8. Didn't work too well on a machine with 8.
31) Message boards : News : Separation Application Shutting Down on Tuesday, Jun 20th (Message 76202)
Posted 7 Jul 2023 by Mr P Hucker
Post:
Small cache? LMAO

Dude, Google is like... right here. www.google.com

3900X = 64MB L3 cache
3900XT = 64MB L3 cache
7742 (EPYC, 64-core, ROME) = 256MB L3 cache
And the dictionary is right there. I said "maybe". There has to be some reason it's rubbish at running the benchmark. Like I told Ian&Steve, a benchmark is just aprogram, and his CPU isn't very good at it.

As I have told you before and I'll say it again. Benchmarks are useless metrics. If you want to know how a CPU performs, then get real world data from what you actually intend to use the CPU for.
Not possible with so many Boinc projects.

The EPYC is good on every BOINC project. Not just Universe@home. I only picked Universe@home because I knew GPUUG users have EPYCs that run it nearly 24/7. So I knew I'd be getting good results from their EPYC hosts.
And yet it can't run benchmarks very well. There's something up with it.

You are right. EPYCs are good at one thing. Number crunching which is what 99% of these BOINC projects need. What they are NOT good at is gaming which is what 99% of all benchmarks revolve around.
Gaming is still numbers, angles of trajectories of light and moving objects. Just like er.... physics in LHC, Milkyway, Universe.
32) Message boards : News : Separation Project Coming To An End (Message 76200)
Posted 7 Jul 2023 by Mr P Hucker
Post:
It sounds like you don't have enough RAM in the system to use it fully for that project. Add more RAM and watch RAM utilization.

A good rule to follow is having 1GB of RAM per thread. So you'll want at least 128GB of RAM for that 5995 TR Pro CPU.

Just keep in mind, 1GB is a good rule of thumb, but not the end all. Some projects can and will use more than 1GB per task. 1GB is the bare minimum. I've recently been going with 2GB or 4GB per thread on my hosts due to the increase in memory foot prints at some projects that I run.
I just tell Boinc to use x% of RAM. If I see "waiting for memory" on any tasks, I add more.
33) Message boards : News : Separation Project Coming To An End (Message 76199)
Posted 7 Jul 2023 by Mr P Hucker
Post:
then i guess you'll never know.
I thought you were the expert on GPUs and would know these things.
34) Message boards : News : Separation Project Coming To An End (Message 76194)
Posted 7 Jul 2023 by Mr P Hucker
Post:
Because they don’t need the extra precision. And implementing it would ostracize a large portion of their user base, reduce a very large chunk of their overall processing power, and gain nothing in the quality of their science results.
So what are researchers running on the pro cards and why isn't that sort of work done in Boinc?
Ask them.
I don't know them, and they'll be too busy doing their research.
35) Message boards : News : Separation Project Coming To An End (Message 76190)
Posted 6 Jul 2023 by Mr P Hucker
Post:
Because they don’t need the extra precision. And implementing it would ostracize a large portion of their user base, reduce a very large chunk of their overall processing power, and gain nothing in the quality of their science results.
So what are researchers running on the pro cards and why isn't that sort of work done in Boinc?
36) Message boards : News : Separation Application Shutting Down on Tuesday, Jun 20th (Message 76189)
Posted 6 Jul 2023 by Mr P Hucker
Post:
No point being pedantic about verbiage. You did the wrong thing. That’s what matters.

Universe tasks are not standardized. You cannot compare single tasks to each other without knowing they are the same size computationally. I told you this from the beginning and you went and immediately did exactly what I told you not to do.
As I just told you, I looked at a range of times.

Your other mistake is relying on a single benchmark. There is no “one-size-fits-all” benchmark. You need to either pick a benchmark that’s more similar to the intended workload (or just use the intended workload as a bench) or take a collection of relevant benchmarks and compare those.
A good CPU should be fast at everything. I'm not going to buy something which is good at Universe only to find it's rubbish at other programs. Universe as I said already is a very small simple program.

A benchmark is designed to test all aspects of a CPU.
37) Message boards : News : Separation Project Coming To An End (Message 76185)
Posted 6 Jul 2023 by Mr P Hucker
Post:
or Titan V which is better than all of those.

but Einstein uses DP also. and it is needed for the calculations, but it's only a small part of the overall computation (not 100% like MW) and they just coded the app in a way to revert that calculation to the CPU if the GPU doesn't support it.
What I meant was if they're making fast expensive DP cards for researchers, there must be a lot of programs they're using which utilise it fully like MW, or they'd just buy gaming cards. Why aren't we seeing fully DP apps in Boinc? MW did well with them.
38) Message boards : News : Separation Application Shutting Down on Tuesday, Jun 20th (Message 76184)
Posted 6 Jul 2023 by Mr P Hucker
Post:
it takes the tiniest bit of effort to google the specs. you don't have to theorize if an EPYC has "tiny" cache when you can go to the product page and see that it has 256MB L3 cache. not that Cinebench is very sensitive to cache size anyway.
Well something is making it rubbish at benchmarks. Benchmarks are just a program, which means you have a CPU good at certain things only.

your confusion is because you did exactly what I told you not to do. you compared two cherry picked tasks that are not comparable. if you look at systems that have been running continuously for a long time and have stabilized RAC, you'll see the 64-core EPYCs are about 4x, maybe 5x, faster than your 3900X/T, not 10x. Skillz was right, you need to be told everything twice.
I did not cherry pick anything, I looked at a few pages of tasks and picked the longest and shortest ones.
39) Message boards : News : Separation Project Coming To An End (Message 76180)
Posted 6 Jul 2023 by Mr P Hucker
Post:
Folding@home uses single precision

https://fahbench.github.io/details.html
This part is interesting: "Consumer GPUs are really bad at double precision calculations (so manufacturers can sell more expensive enterprise units to researchers)."

Only one Boinc project has ever needed/used DP, Milkyway. Why? There are quite a lot of us with DP cards, the older cards like 280X, the posh ones like Radeon VII.
40) Message boards : News : Separation Application Shutting Down on Tuesday, Jun 20th (Message 76179)
Posted 6 Jul 2023 by Mr P Hucker
Post:
it's two 64-core CPUs. HT is on, so that's 128 threads each, and 256 threads total for the system.
the only project the system runs is Universe, and it crunches at 90% CPU utilization (roughly 230 threads) 24/7
~3.0M ppd total, ~1.5M ppd each CPU.

comparing cherry picked tasks from hosts is pointless since universe has varying task lengths. they are not all the same so it's easy to end up comparing two tasks that aren't comparable.

go nuts and cope.
Perhaps.... your CPU is very fast at Universe since it's a simple program, even my 8 core Android runs it. Maybe your CPU has a tiny cache or something and can't cope with bigger programs like Cinebench, so falls flat on the floor for benchmarks. I'll stick to the tried and tested benchmark scores, not what you happened to have found it's good at. Maybe someone can recite the alphabet really fast, doesn't mean they're exceedingly clever.


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