Posts by Dr.Diesel

21) Message boards : Number crunching : Intel security flaw (Message 1910355)
Posted 3 Jan 2018 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
AMD patch is now in:

https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?h=x86/pti&id=694d99d40972f12e59a3696effee8a376b79d7c8
22) Message boards : Number crunching : Intel security flaw (Message 1910318)
Posted 3 Jan 2018 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
Looks like pretty much no gaming hit, so probably the same for us.

Phoronix has an initial bench set, with I/O getting hit pretty hard, might be some rough times ahead for Intel. The bug doesn't affect AMD but the initial patch hit all 64bit systems regardless of maker, I suspect AMD will submit a patch in the next day or two to fix that, if they've not already.

In any case if one wishes to continue on anyhow (on Linux), the nopti kernel parameter will revert the patch at boot. Windows details won't be out for a couple more weeks.
23) Message boards : Number crunching : Panic Mode On (109) Server Problems? (Message 1906764)
Posted 13 Dec 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
Ooo, just noticed our Special Fundraiser icons have also disappeared.
24) Message boards : Number crunching : Panic Mode On (109) Server Problems? (Message 1906763)
Posted 13 Dec 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
7-8 Tbar Triple updates didn't fetch any work either, on any of my machines.
25) Message boards : Number crunching : Panic Mode On (109) Server Problems? (Message 1906740)
Posted 13 Dec 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
I attempted to suspend a few ready to report tasks (hoping a to trickle a few in), and my entire backlog disappeared. :(
26) Message boards : Number crunching : Panic Mode On (109) Server Problems? (Message 1906722)
Posted 13 Dec 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:

It always takes a few hours until the servers catch up with demand.


Check out the Database/file status, As of. Servers might be up, or at least showing up, but the project is still down/stuck/messed up.
27) Message boards : News : Special Fundraiser for Parkes Data Store and GPU development system (Message 1905393)
Posted 7 Dec 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
Just donated as well, many thanks to Eric and the families above for matching!
28) Message boards : Number crunching : Suggestions to further improve my performance? (Message 1904426)
Posted 2 Dec 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
So I ran across this post:

https://setiathome.berkeley.edu/forum_thread.php?id=82127&postid=1899214

That mentioned tweaking the sbs value to 1024 and got me poking around. I'm running Tbars special app and noticed that I only have a single .txt config file:

ap_cmdline_7.08_x86_64-pc-linux-gnu__opencl_nvidia_100.txt

With the following contents:

-unroll 12 -sbs 256 -ffa_block 3072 -ffa_block_fetch 1536

So I take that (new to this please bare with me) that I'm running no special options except for the Astropulse Nvidia WUs. Is this because Tbar has already built the options into the binaries, or do I have some optimizations still left on the table? Could I benefit from changing the sbs value above or additional config options?

Many thanks for the help.
29) Message boards : Number crunching : Panic Mode On (108) Server Problems? (Message 1904276)
Posted 2 Dec 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
Which, again, is in fact not the science database that runs informix .


Is this along with each's systems OS and primary DB documented anywhere?
30) Message boards : Number crunching : Panic Mode On (108) Server Problems? (Message 1904255)
Posted 1 Dec 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
Eric mentioned Informix, which I suspect is IBM's Informix DB, probably waiting on a new build from them. Or at minimum awaiting an undocumented config switch as a temp work-a-round. There was some backend working happening last night, perhaps they gave it a go and ran into further issues.

It is that and last I heard we are on an older version of it.
I would hope it is a well know issue they ran into and time, because of the large size of the db, is the only factor.


Having worked with IBM in the past, I further feel for Eric's sanity.
31) Message boards : Number crunching : Modest GPU upgrade suggestions? (Message 1904121)
Posted 1 Dec 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
If it has a full length PCIe slot a Nvidia 1060 3Gb is a good value. However depending on it's age it might have an AGP slot, too far back for me to recall what would be best, if anything.
32) Message boards : Number crunching : Panic Mode On (108) Server Problems? (Message 1904095)
Posted 1 Dec 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
Eric mentioned Informix, which I suspect is IBM's Informix DB, probably waiting on a new build from them. Or at minimum awaiting an undocumented config switch as a temp work-a-round. There was some backend working happening last night, perhaps they gave it a go and ran into further issues.
33) Message boards : News : No work. Database issues. (Message 1904080)
Posted 1 Dec 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
I used this off-time to clean my heatsinks and fans, plus install an additional 1070 in one of my development rigs.

Big thanks to Eric and company that are likely spending their free time to get this fixed up.
34) Message boards : News : SETI@home 2017 fundraising drive has begun. (Message 1899821)
Posted 8 Nov 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
Your first post in 18 years. Well done Sir, and thank you!


Me too, as of a few days ago, here to stay now.
35) Message boards : Number crunching : Panic Mode On (108) Server Problems? (Message 1899015)
Posted 4 Nov 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
I'm not up on SETI's current storage infrastructure, but in today's announcement from Eric he mentioned needing 300TB of additional storage! That cost will be huge, especially if that needs to be spinning storage, so any hope for "other" improvements are not likely for a while I presume.

I wouldn't consider $7000 (Toshiba 3TB @$70 X 100) a huge cost if they get $70,000 a year for donations.


. . To be fair it would be a little more as they would need to be a raid array for security. But less than double that I am sure. But even at $10K to $12k it is a significant burden but not what I would consider a HUGE cost, especially compared to other requirements that are much more expensive.

Stephen

??


Lots of parts still missing:

- 100 bay enclosure, SuperMicro makes a 90 bay for $6000 (However you would not use 3TB drives for an array of this size)
- Toshiba 3TB drives are SATA, so you'll need a 100 port controller card, which isn't made, but you can get low range 24 port cards for ~$500/each
- MB/RAM/Fiber cards?

This is not how they'd build such an array anyhow, and we have no idea what throughput is required. Given their budget, this array would be significant, even if they homebrewed it.
36) Message boards : Number crunching : Panic Mode On (108) Server Problems? (Message 1898955)
Posted 3 Nov 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
[quote]I wouldn't consider $7000 (Toshiba 3TB @$70 X 100) a huge cost if they get $70,000 a year for donations.


It's not quite that easy. :)
37) Message boards : Number crunching : Panic Mode On (108) Server Problems? (Message 1898952)
Posted 3 Nov 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
Keith, please see here:

http://setiathome.berkeley.edu/donor_letter_nov17.php
38) Message boards : Number crunching : Panic Mode On (108) Server Problems? (Message 1898947)
Posted 3 Nov 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
I'm not up on SETI's current storage infrastructure, but in today's announcement from Eric he mentioned needing 300TB of additional storage! That cost will be huge, especially if that needs to be spinning storage, so any hope for "other" improvements are not likely for a while I presume.
39) Message boards : Number crunching : Panic Mode On (108) Server Problems? (Message 1898861)
Posted 3 Nov 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
So I'm new to the forums here, returning to the project after a way too long absence.

My machines ran out of work last night too, and the last two outages they have set idle running out of work (though I think I'm prepared for bunkering now, but manual intervention shouldn't really be necessary given the outages are scheduled and known). If the project really needs our computing resources sounds like there are fairly easy opportunities to improve?

Do none of the official backend SETI guys read the forums, are they aware of our ligament needs and concerns?
40) Message boards : Number crunching : Suggestions to further improve my performance? (Message 1898543)
Posted 1 Nov 2017 by Profile Dr.Diesel Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Post:
Thank you Keith, that is very helpful.


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