Posts by Kjoshj

1) Message boards : The Lounge : COVID 19 affected your crunching? (Message 99133)
Posted 5 Jun 2020 by Kjoshj
Post:
Double post, darn mobile
2) Message boards : The Lounge : COVID 19 affected your crunching? (Message 99132)
Posted 5 Jun 2020 by Kjoshj
Post:
Sorry about the company. That’s a real bummer. We may declare BK soon, but not sure what my future holds.

I’ve done my summer idling of my winter rigs, and stopped high PPD and high energy consumption projects. No collatz, gpugrid, and am running Einstein on my single GPU that I didn’t idle. I stopped projects that use AVX until end of summer, which unfortunately includes Rosetta, LHC and Tn-Grid.

With COVID I’m running WCG almost exclusively, but have some universe still allocated, but will idle that rig for the summer too (bummer as Epyc is likely my most efficient, but dell bios doesn’t have a low tdp option for it yet, and it’s so loud to boot). Plan in the next week or two to pare down to my desktop and one server using no turbo boost until fall.
3) Message boards : The Lounge : Zen 3 Ryzen 4000 speculation (Message 98735)
Posted 22 May 2020 by Kjoshj
Post:
One of the larger structural changes is that Zen 3 will have one 8 core CCX per compute die vs the 2x 4 core CCX that we’ve had previously.

This enables all 8 cores on each die to share the full 32mb L3 cache instead of two 16mb slices that are faster for 4 cores and slower to be accessed by the other 4 on the die. Zen cores cannot access the L3 cache of separate compute dies. This should increase L3 available per thread when lightly threaded and simplify the NUMA arrangement at the cost of slightly higher L3 latency.

Haven’t heard how else they’re getting to the claimed 15% IPC improvement, and even with it, performance per watt will not jump nearly as much as the 7nm process allowed for Zen 2 to bring with the enhanced 7nm being a small improvement.
4) Message boards : Questions and problems : OS for dell 2950 server? (Message 85826)
Posted 11 Apr 2018 by Kjoshj
Post:
I know this is old, but was first result for “boinc Poweredge”

The Dell Poweredge 2950 is a severely outdated platform using DDR2 and FSB technology, unless you need the waste heat in winter or a colder environment, it may be worse for the planet to run the machine even if only to crunch helpful projects.

None on my servers are that old and I still don’t run them during the months that air conditioning is necessary.

That said all of my machines this fall got a fresh install of windows server 2012 Evaluation Edition that works for 180 days, about the same time they get powered down for the season.

The carbon cost of research cannot be ignored.



Copyright © 2024 University of California.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.