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I’m wondering what types of EE sub-fields you use daily to make these projects. Power Systems? Controls? Embedded Systems? If you have any particular references or textbooks you would recommend as well, I’d love to know.
Thanks in advance.
Jim
Thanks for the suggestion. It is a great idea to post textbook references! The trouble is, the university I went to (being in Hungary) didn’t use the textbooks normally available in the US. So, I will have to ask you: if you know of good text-books, please let me know, and I’ll compile a list. This applies to links to good on-line resources as well.
For the sub-fields I use in these projects, that’s a mixture I guess. It’s basic EE, digital, power mostly on the HW side, and control theory, embedded systems, general CS for the SW side.
Doradolist seems to have a list of textbooks used at major universities in the US.
Hi, i´m lookin how to debrick router airlink ar430w, how can i do solve??
thanks a lot
Sorry, I have no idea. I’m not familiar with that router.
Hi! I downloaded the most recent cray_xmp_sim-0.96 I cant get the sim to run?
Try cray_xmp_sim.exe xmp_sim.cfg in the bin or bin64 folder depending on your architecture.
Andras:
You speak of the “2nd Computer Revolution “. Check out the NY Times article on UBER tests in Pittsburgh.
http://www.nytimes.com/2016/09/11/technology/no-driver-bring-it-on-how-pittsburgh-became-ubers-testing-ground.html?_r=0
Your posts from 2013 were prescient.
GTC
New Castle, PA
Hey – I tried connecting via telnet and SSH to your simulator, and nothing 😐 just nothing after connecting (telnet) or typing in the password (SSH).
Hi!
This should be solved for the most part now. For some reason after a while processes don’t get cleaned up properly and get stuck in the ‘zombie’ state. When that start happening, the OS eventually runs out of process handles (or whatever it’s called under UNICOS). At that point you won’t be able to log in as logon would not be able to start the shell for you.
I still don’t know why this happens (any help would be appreciated!) but what I did was to restart the simulator daily to start from a clean slate. This seems to help, but in some rare cases it still gets stuck in that state.
So, try now, it should work.
Andras
Hello
Hey wish for you to check out the chaple lang. it is a free language it is a open source programming language for the cray.. just thought i would let you know..
Phil
Thanks! I’ll check it out. It seems though it doesn’t support anything as old as the J90.
I kept playing with it and found a clue:
PARAMETER LIST
DEVICE: DK20-1 DD29
SYSTEM: X
PROCESSORS: 1
OS: COS
CRAY: ALL
TABLE MEMORY: N
BUFFER MEMORY: 0 14000000
IOS: Y
RESTART: Y
LABEL NOT FOUND – ABORT
I think this means it has written to a disk that it want loaded.
Any suggestions?
Well, you’ve crashed. Why? That’s hard to tell. This is the ‘kernel panic’ from the IOPs. It means something went horribly wrong, or you’ve pressed CTRL-D.
Various daemons do partial tasks but the logon message fails with error 0251.
I cannot find a reference to error 0215 in Cray materials I have access to.
Do you know what this error is?
In general, the CPU does not respond.
TTY finds certain channels.
CONC fails.
CRAY fails.
boot_tape.tap is available but cos_117 is the image we need.
You probably haven’t booted the mainframe. So the Cray is actually sitting in reset and all you talk to is the I/O subsystem.