CPU tasks.

Keith Myers
Keith Myers
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Tom M wrote: Rolf

Tom M wrote:

Rolf wrote:

How to create a wisdom.dat file and where to put that file, see first post in this link

https://einsteinathome.org/content/gamma-ray-pulsar-search-fgrpb1-cpu-app-version-108

I recommend running the command at the same time as you have some load on the CPU, it gives the best result in my experience. So run the command while at the same time processing a few FGRP tasks ideally. There is a discussion about this in the same thread I think - if in doubt you can try it out yourself, just create several wisdom.dat files and see which one is best.

 

Ok, what am I missing?

tom@TheMonolith:~/Desktop/BOINC/projects/einstein.phys.uwm.edu$ ./fftwf-wisdom_FGRP5_1.08_x86_64-pc-linux-gnu -o FGRPB1wisdom.dat rib67108864

When I run this command it goes away and doesn't come back until I do a control C?

Tom M

 

DON'T CTRL-C the terminal session.  Just let it run.  It can take up to 30 minutes before finishing the profile depending on the speed of your cpu.  Once the profile is finished, the terminal prompt will appear and you can close the terminal session and you can find your new wisdom file in the project directory.

 

Keith Myers
Keith Myers
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Mine only took about 10-15

Mine only took about 10-15 minutes to generate the file.  But I'm sure I run my cpus much faster than you do at stock.

 

Keith Myers
Keith Myers
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The Ryzen 3950X is Zen 2

Tom M wrote:

Apparently Linux Gamma-Ray#5 cpu tasks have the following results on two different Amd model cpus.

Neither run with Turbo settings.

Amd 2700 ~8 hours

Amd 3950x ~3 hours

 

The Ryzen 3950X is Zen 2 based silicon with much greater FPU performance over the older Ryzen 2700X Zen+ architecture.  Really night and day difference in the designs.  That is primarily the difference in observed results.

 

cecht
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Average recent task times for

Average recent task times for Linux Gamma-Ray#5 on a Pentium G5600, 3.9 GHz, 2c/4t, running 1 task:

without wisdom file: ~2.4 hr

with wisdom file: ~1.6 hr

Ideas are not fixed, nor should they be; we live in model-dependent reality.

Keith Myers
Keith Myers
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Average recent task times for

Average recent task times for Linux Gamma-Ray#5 on a Ryzen 3950X, 4.2 GHz, 16c/32t, running 4 tasks:

Average of 10 LATeah1029f tasks:

Without wisdom file = 1.49hrs

With wisdom file = 1.047 hrs

 

Jan Vaclavik
Jan Vaclavik
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Why is this not done by the

Why is this not done by the project automatically?

mikey
mikey
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Jan Vaclavik wrote: Why is

Jan Vaclavik wrote:

Why is this not done by the project automatically? 

Because your pc needs to stop crunching and be disconnected from the net etc to get the best results, how does an online program do that? Follow the links in the early part of the discussion and you will see how it's done.

Jan Vaclavik
Jan Vaclavik
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mikey wrote: Because your pc

mikey wrote:

Because your pc needs to stop crunching and be disconnected from the net etc to get the best results, how does an online program do that? Follow the links in the early part of the discussion and you will see how it's done.

The app could hog all available threads and prevent other projects from crunching. Disconnecting was mentioned as a recommendation.

Be it as it may, it sounds like a headache. I guess having dedicated users take care of it themselves is good decision.

Keith Myers
Keith Myers
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I actually ran the first

I actually ran the first wisdom profile while I was crunching.  Didn't seem to have any effect.  No different than running with BOINC stopped on another host.  But I am crunching on either 24 or 32 thread cpus.

Depends on whether the science app is written to run the profiler first whenever a wisdom file is not found.

The old BRP4G gpu app for Windows did this.  But I guess the developers didn't bother to write that function into the FGRP5 cpu application.

 

Keith Myers
Keith Myers
Joined: 11 Feb 11
Posts: 4968
Credit: 18767186164
RAC: 7117581

Quote:Be it as it may, it

Quote:
Be it as it may, it sounds like a headache. I guess having dedicated users take care of it themselves is good decision.

Wasn't any headache at all.  Just a quick copy and paste in Terminal and wait 10 minutes. Done.

 

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