lekernel | wow, vivado takes 2min 18s just to *parse* the lm32 source code | 12:17 |
---|---|---|
Fallenou | maybe afterward place and route is much more efficient ? :) | 12:24 |
lekernel | wow no, everything is mega slow | 12:32 |
lekernel | even opening the netlist to automatically create clock constraints in the GUI takes minutes | 12:32 |
Fallenou | weird :/ | 12:33 |
Fallenou | even the old ISE was not like that | 12:33 |
lekernel | the power of java: combining the development slowness of compiled languages with the runtime slowness of interpreted languages | 12:35 |
lekernel | aha! seems lm32 can run at 200MHz in kintex 7 | 12:59 |
kristianpaul | could* ? | 13:14 |
kristianpaul | or you actually got it runnungin? | 13:14 |
kristianpaul | even 150mhz the worst case, is a nice jump :) | 13:15 |
lekernel | according to vivado p&r results, it can | 13:18 |
lekernel | actually, among those 2-3min most | 14:23 |
lekernel | are spent loading the libraries | 14:23 |
lekernel | ... | 14:23 |
Fallenou | nice techno improvement :) | 14:40 |
Fallenou | more than 2x speedup ! | 14:41 |
Fallenou | lekernel: is vivado using map, par, xst ? or new tools ? | 14:42 |
Fallenou | is it just another gui? | 14:43 |
lekernel | new tools | 14:48 |
lekernel | seems they rewrote the whole thing in java (lol) | 14:48 |
lekernel | synthesis + PAR of a 8-bit shift register (!) takes more than 30 minutes | 14:49 |
lekernel | most of it, of course, is spent doing autocrap-style tasks like loading libraries, checking licenses and other inane things, etc. | 14:49 |
Fallenou | dear god | 14:55 |
Fallenou | I can build my minimalist mmu-enabled soc in 5 min with my new core i5 desktop computer :) | 14:55 |
Fallenou | using old tools on 14.1 | 14:56 |
cde | lekernel: could you send me any .jar from vivado, for example from the P&R? | 18:07 |
lekernel | phew, it's huge... gigabytes... | 18:11 |
lekernel | probably easier you download it yourself from xilinx | 18:11 |
lekernel | what are you looking for exactly? | 18:12 |
GitHub102 | [migen] sbourdeauducq pushed 2 new commits to master: https://github.com/milkymist/migen/compare/2e14569b5c64...c273866b08cd | 18:56 |
GitHub102 | [migen/master] fhdl: support inverted clock ports in instances - Sebastien Bourdeauducq | 18:56 |
GitHub102 | [migen/master] fhdl: support expressions in instance ports - Sebastien Bourdeauducq | 18:56 |
--- Sun Sep 23 2012 | 00:00 |
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