Conversation with #inferno at Tue Oct 15 18:50:16 2013 on powerman@irc.freenode.net (irc)
(18:50:16) #inferno: Topic for #inferno set by mennis at 17:30:16 on 12/28/09
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(21:48:36) trsohmers: leetspete: I'm going to be meeting with some local Plan9 people later this week... they seem more interested in 9Front then Inferno
(21:49:02) trsohmers: For the Epiphany processor we talked about yesterday, do you think Inferno would be better?
(21:58:01) zutto: tbh, i dont think you'll see much of a difference between inferno and 9front ;l
(22:46:51) leetspete: trsohmers: I think Inferno tends to have better facilities for coordinating swarms of nodes, where Plan 9 is a little more rigid about the structure.
(22:47:12) trsohmers: Are their resource requirements about the same?
(22:48:04) trsohmers: I saw that Inferno doesn't require a MMU, and could run with less than 1MB of memory
(22:48:11) leetspete: About the same for the kernel.
(22:48:32) leetspete: Yeah, since the memory is managed pretty rigidly in userspace in Inferno.
(22:49:58) trsohmers: The concern is that each core only has 32K memory
(22:50:02) trsohmers: (in this version)
(22:50:30) trsohmers: so you only have 512KB on the Epiphany chip, but you can address off chip memory (but obviously it is much slower)
(22:51:32) leetspete: Right, that's the shared memory from the architecture docs?
(22:52:45) leetspete: I think you might be a little sad if you try to run the whole thing in under 32k.  Is it Harvard or Von Neumann?
(22:56:50) leetspete: One thing you might try, 32k is much more than enough to do a 9P interface.  A kernel per board, cores exposed via 9P.  Or hack the thread management up, might be easier.
(23:00:11) leetspete: If I recall correctly, the way the Blue Gene Plan 9 stuff works is that there's one Plan 9 kernel per Cell, running on PPC cores and farming tasks out to the vector processors.
(23:00:29) leetspete: But, maybe don't quote me on that.  I was up all night.  :P
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(03:00:03) trsohmer_: leetspete: The shared memory is the full 512K... the slow off chip memory would be the RAM of the ARM chip
(03:00:11) trsohmer_: which would be 1GB
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(12:30:43) qrstuv: what's the logic behind not having arbitrary goto's?
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