EM searches, BRP Raidiopulsar and FGRP Gamma-Ray Pulsar
Bernd Machenschalk
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28 Apr 2022 7:03:04 UTC
Topic 227463
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Dear E@H participants!
I did write this occasionally hidden in other forum threads, but I thought I should put this more officially: the electromagnetic (i.e. non-gravitational-wave) searches on Einstein@Home are changing.
* There are currently no more scientifically promising targets for the Gamma-Ray searches than what we currently have prepared "work" for. So the FGRP searches/applications will eventually run out of work.
* We do have a PHD student now who will take a closer, more elaborated look at the Arecibo survey (BRP4). There are quite a few "beams" left there, so we are massively ramping up the throughput to get it done in ("PHD") time. However, the large span of various devices that process these tasks, from small Android phones to modern CPUs (and some GPUs) gives us, and particularly our database, some headache. Therefore we decided to split the search again, as we did in the past for the GPUs: basically the slower ARM-bases hosts will continue to process the current "BRP4" tasks, while the faster Intel x86 based CPUs and GPUs will be shifted to "BRP4G", where these get "bundles" of (currently) 8 BRP4 tasks to process as one task. These will run 8x as long as now, but will also get 8x as much credit. (sorry if you don't like this, our DB is already aching at the flood of small tasks).
* For the better, more modern GPUs we are setting up a new search ("BRP7") that will examine data from MEERKAT and FAST radio telescopes that CPUs are still too slow to process. We're working on that, but are still busy dealing with the side-effects of the increased BRP4 throughput.
Thank you for contributing to Einstein@Home
BM
Will there be an Nvidia app
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Will there be an Nvidia app for BRP4G? Or will that be left to Intel still? Also currently it looks like there is no Intel App for BRP4G, only BRP4
will there be an Nvidia app for the new BRP7? Do you have any estimates to when this new search will begin?
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Bernd Machenschalk
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Thank YOU for letting us know. We anxiously await these "new" tasks.
Proud member of the Old Farts Association
Longer runtimes are fine by
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Longer runtimes are fine by me. It would be nice if BRP4 would also work for Nvidia/AMD.
I realize this is really low priority, but is there a chance the Arecibo Data Progress on the Server Status page could be fixed? Also, the current BRP4G app is called "Arecibo, GPU". This might generate a lot of questions on the forums as to why they are called that but aren't running on the GPU. If that could be fixed, I think it would be useful.
New radio data is always exciting.
Thanks for the update Bernd ,
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Thanks for the update Bernd , I was wondering why it was taking more requests to load up with that version.
Thanks for the feedback! A
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Thanks for the feedback! A few things I can answer right away:
Well, a few are (Intel GPUs). But that naming struck me, too, but I couldn't think of a much better name, so I left it. I modified it to "Arcecibo, fast", which is not much more descriptive, but should be less confusing.
Oh well - the progress counter is broken again. I thought I fixed it a couple of weeks or months ago. After all that shuffling around with the BRP4 applications and app versions is done, I'll attend to that again.
I do hope that we get the new search that will make use of AMD+NVidia GPUs out the door next week, certainly in May. Definitely long before FGRPB1G runs out of work.
BM
Hello Bernd. I think
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Hello Bernd.
I think Arecibo Fast is better. At least this way, people running CPU tasks won't wonder why the app name has GPU in it.
Thank you for your comment.
Falconet wrote: ... Arecibo
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Nooooo! Totally confusing for whether we are seeing a profusion of Arecibo data fused somehow with FAST data from China...!
Why not the simply descriptive description:
Arecibo CPU/GPU
?
Keep searchin',
Martin
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Bernd Machenschalk
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Bernd, I agree with ML1... no "Arecibo, Fast"... for the same reasons, China!
Unless, when you "get the new search that will make use of AMD+NVidia GPUs out the door next week, certainly in May", you would have all three GPU makers doing the BRP4G app, how about "Arecibo, Intel GPU" only? It may not be a cute name, but it certainly is understandable.
Regardless, keep up the good work. You and your teammates are definitely doing the dirty work behind the scenes, and personally, I want you to know that it does not go unnoticed!!
Proud member of the Old Farts Association
i dunno i think the
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i dunno i think the difference between "fast" and "FAST" is pretty obvious.
fast - verb
FAST - acronym/noun
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Ian&Steve C. wrote: i dunno
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I dunno either... I think you're right, though. I just hadn't been thinking... I'll just finish my JD&Pepsi and have another.
Proud member of the Old Farts Association