EM searches, BRP Raidiopulsar and FGRP Gamma-Ray Pulsar

Ian&Steve C.
Ian&Steve C.
Joined: 19 Jan 20
Posts: 3928
Credit: 45805922642
RAC: 63778951

Ian&Steve C. wrote: but this

Ian&Steve C. wrote:

but this might be a problem with the application, need to test on something more modern.

well there doesnt seem to be anything inherently wrong with the v0.05 nvidia-opencl application. running just fine on a GTX 1060 6GB.

it seems Fermi is still too old, even for the opencl app. this GPU only supports OpenCL 1.1

 

Bernd, you might need to put a opencl check in the scheduler to not send to GPUs with less than OpenCL 1.2. or recompile the app (or another version of the app) that works with older GPUs with opencl 1.1 if you want to support these old cards.

_________________________________________________________________________

JohnDK
JohnDK
Joined: 25 Jun 10
Posts: 115
Credit: 2523420478
RAC: 1902182

I have errors on all my 27

I have errors on all my 27 WUs, every wingman also have errors, except one which ran for almost 6000 secs. Seems something isn't going well.

Harri Liljeroos
Harri Liljeroos
Joined: 10 Dec 05
Posts: 4290
Credit: 3176131872
RAC: 1921798

The Nvidia 0.05 opencl win

The Nvidia 0.05 opencl win application fails both on GTX-970 and GTX-1070. Runtime is only 15-20 seconds.

archae86
archae86
Joined: 6 Dec 05
Posts: 3157
Credit: 7206484931
RAC: 931774

I've run about 40 of the

I've run about 40 of the current v0.05 MeerKAT tasks on three hosts, all running Windows on three different AMD Navi-class GPU cards.

I'm running about 10% computation errors.  Mine generally occur after what appears to be full normal run times.  This is hugely worse than the same machines have seen running 1.28 Gamma-ray pulsar binary search.

I've only got six validations.  Every one is with a quorum partner who is also running Windows/AMD.

Two of those validations came on Work Units which had already piled up more than ten errors while computing on other people's machines.  Unlike mine, those compute errors generally had come quickly (8 to 63 elapsed seconds).  They were generally on Windows machines running NVidia cards (so maybe that is why that application has vanished from the application list for the moment).

On the machine that has run the most tasks, I have clear indications that 2X beats 1X and that 3X beats 2X both in GPU utilization and in productivity indicated by task completion times.  This result is likely card specific and perhaps task specific, as I think the GPU memory usage is pretty substantial.

Jim1348
Jim1348
Joined: 19 Jan 06
Posts: 463
Credit: 257957147
RAC: 0

There is a new Linux

There is a new Linux version (at least the time is updated).

0.05 (BRP7-opencl-nvidia)     23 Aug 2022, 13:46:01 UTC

It is running OK for me on a GTX 1060 after 20 minutes and 50% complete.

But it is set to use only 0.5C + 1NV, so I set it to use a full core.

   
Ian&Steve C.
Ian&Steve C.
Joined: 19 Jan 20
Posts: 3928
Credit: 45805922642
RAC: 63778951

Yeah the v0.05 Nvidia-OpenCL

Yeah the v0.05 Nvidia-OpenCL version seems to work fine (when the task doesn’t get stuck). But it’s about 20-25% slower still than the CUDA app. 

_________________________________________________________________________

Mr P Hucker
Mr P Hucker
Joined: 12 Aug 06
Posts: 838
Credit: 519025159
RAC: 11373

Richard Haselgrove

Richard Haselgrove wrote:

Peter Hucker of the Scottish Boinc Team wrote:

Since Einstein task list doesn't allow filtering by app...

Yes, it does. Use the drop-down list to the top-right of the main task list - you can select any app that you currently have tasks for in the list. You can also sort the list by sent time, to bring the current (v0.05) tests to the top.

Call me stupid if you wish, but this is the main task list?  https://einsteinathome.org/account/tasks

There's no drop down box displaying for me.  Applications is just black text, not selectable in any way.

If this page takes an hour to load, reduce posts per page to 20 in your settings, then the tinpot 486 Einstein uses can handle it.

Ian&Steve C.
Ian&Steve C.
Joined: 19 Jan 20
Posts: 3928
Credit: 45805922642
RAC: 63778951

Peter Hucker of the Scottish

Peter Hucker of the Scottish Boinc Team wrote:

Richard Haselgrove wrote:

Peter Hucker of the Scottish Boinc Team wrote:

Since Einstein task list doesn't allow filtering by app...

Yes, it does. Use the drop-down list to the top-right of the main task list - you can select any app that you currently have tasks for in the list. You can also sort the list by sent time, to bring the current (v0.05) tests to the top.

Call me stupid if you wish, but this is the main task list?  https://einsteinathome.org/account/tasks

There's no drop down box displaying for me.  Applications is just black text, not selectable in any way.

try this one, which is the same as the "Tasks" link at the bottom of your main Account Dashboard.

https://einsteinathome.org/account/tasks/0/0 (you're missing the /0/0)

 

 

 

_________________________________________________________________________

Mr P Hucker
Mr P Hucker
Joined: 12 Aug 06
Posts: 838
Credit: 519025159
RAC: 11373

Ian&Steve C. wrote:AMD has

Ian&Steve C. wrote:

AMD has far more software/driver issues. this is really me going against the grain to make such an old card work on an relatively modern OS.

[[snip]]

anyone else get a Fermi card working?

I've got 12 Tahiti chips working on Windows 11 (10 year old AMDs).  I've never had a software problem in the 27 years I've used AMD.  No problems with Radio apart from when they physically explode.  That reminds me I've got a capacitor to replace.

If this page takes an hour to load, reduce posts per page to 20 in your settings, then the tinpot 486 Einstein uses can handle it.

Bernd Machenschalk
Bernd Machenschalk
Moderator
Administrator
Joined: 15 Oct 04
Posts: 4308
Credit: 249907641
RAC: 32976

Short report:We did

Short report:

For the latest app version (0.05) we did change the precision of some variables from float to double (to increase validity and improve validation). For CUDA this required us to change the kernel calling API. This works well on Linux, but apparently doesn't on Windows. The OpenCL app obviously doesn't work either on NVidia, but thanks to the recent testing we now at least have a problem that we can reproduce deterministically on our own machines, and thus fix more easily. We're working on it. For now I disabled all app versions again.

BM

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.