< U017E7L119N> please use this <https github com msaligane O open-source-silicon.dev #openroad

<@U017E7L119N> please use this: <https://github.co...

mehdi

07/14/2020, 10:59 PM

@User please use this: https://github.com/msaligane/OpenROAD-flow/tree/openroad/flow/platforms/sw130 I setup the hs lib for you and just realized I made "custom" changes to get the flow running. But this should work for the new libs as is (I did not include finishing steps).

20Mhz

07/15/2020, 3:44 AM

do you know if repair_clock_inverters a native command? my binary doens’t seem to have it…

mehdi

07/15/2020, 3:45 AM

which branch of the tools submodules are you using?

20Mhz

07/15/2020, 3:47 AM

i cloned the original repo, the master branch for building/installing

mehdi

07/15/2020, 3:48 AM

use the openroad branch. And when you are building use: ./build_openroad.sh -d -p -l to build the latest version of the tools

20Mhz

07/15/2020, 3:54 AM

ok, so this one is new? is there one stop shop for UI doc?… I’m still familiarizing with the whole suite…

mehdi

07/15/2020, 3:54 AM

When you run the build_openroad use --latest. It pulls the head of all submodules.

mehdi

07/15/2020, 3:55 AM

No worries, yes we need to update the doc (this was added recently).

👍 1

20Mhz

07/15/2020, 5:02 AM

getting some odd errors during global_place.tcl

[PROC] Begin InitialPlace ...

[InitialPlace]  Iter: 1 CG Error: 1.08983e-07 HPWL: 18309304

[InitialPlace]  Iter: 2 CG Error: 4.8921e-08 HPWL: 14469696

[InitialPlace]  Iter: 3 CG Error: 9.21233e-08 HPWL: 14452772

[InitialPlace]  Iter: 4 CG Error: 9.02186e-08 HPWL: 14453353

[InitialPlace]  Iter: 5 CG Error: 9.43531e-08 HPWL: 14464670

20Mhz

07/15/2020, 5:03 AM

bails out at the end:

[INFO]   NewStepLength = 30.916

[INFO]   NumBackTrak = 11

[ERROR] RePlAce divergence detected.

Please decrease init_density_penalty value (REPL-3)

20Mhz

07/15/2020, 5:03 AM

any clues?

20Mhz

07/15/2020, 5:03 AM

I’m simply trying to build the gcd block

mehdi

07/15/2020, 11:40 AM

Did you change the size of gcd?

20Mhz

07/15/2020, 12:20 PM

only to try to fix this, do you have any insight on what it means?

20Mhz

07/15/2020, 12:20 PM

changing init_density_penalty doens’t seem to help

mehdi

07/15/2020, 12:25 PM

My experience with the tiny designs is that the placer diverges when the core area is too small. Can you try increasing it?

20Mhz

07/15/2020, 12:31 PM

I’m setting it by utilization, currently at 60%

20Mhz

07/15/2020, 12:32 PM

Running Global Placement

[INFO] DBU = 1000

[INFO] SiteSize = (480, 3330)

[INFO] CoreAreaLxLy = (19680, 19980)

[INFO] CoreAreaUxUy = (90240, 89910)

[INFO] NumInstances = 292

[INFO] NumPlaceInstances = 227

[INFO] NumFixedInstances = 65

[INFO] NumDummyInstances = 0

[INFO] NumNets = 263

[INFO] NumPins = 895

[INFO] DieAreaLxLy = (0, 0)

[INFO] DieAreaUxUy = (110450, 110450)

[INFO] CoreAreaLxLy = (19680, 19980)

[INFO] CoreAreaUxUy = (90240, 89910)

[INFO] CoreArea = 4934260800

[INFO] NonPlaceInstsArea = 305294400

[INFO] PlaceInstsArea = 2977819200

[INFO] Util(%) = 64.330109

[INFO] StdInstsArea = 2977819200

[INFO] MacroInstsArea = 0

20Mhz

07/15/2020, 12:39 PM

do you know if this is off by default? how to enable?

Copy code

#ifdef ENABLE_CIMG_LIB
    pe.SaveCellPlotAsJPEG(
        string("InitPlace ") + to_string(i), false,
        string("./plot/cell/ip_") + to_string(i));

#endif

20Mhz

07/15/2020, 12:58 PM

mage to build, results unexpected xD

Copy code

InitialPlace]  Iter: 1 CG Error: 6.41183e-08 HPWL: 8071794

[CImg] *** CImgIOException *** [instance(1060,1060,1,3,0x7fe8fb672000,non-shared)] CImg<unsigned char>::save_other(): Failed to save file './plot/cell/ip_1.jpg'. Format is not natively supported, and no external commands succeeded.
libc++abi.dylib: terminating with uncaught exception of type cimg_library::CImgIOException: [instance(1060,1060,1,3,0x7fe8fb672000,non-shared)] CImg<unsigned char>::save_other(): Failed to save file './plot/cell/ip_1.jpg'. Format is not natively supported, and no external commands succeeded.
/bin/bash: line 1: 69880 Abort trap: 6           openroad -no_init -exit ./scripts/global_place.tcl

mehdi

07/15/2020, 1:02 PM

@20Mhz sorry I don't see all these errors. I can take a look after my morning meetings. I think the previous cmd is for visuals.

20Mhz

07/15/2020, 1:04 PM

sure, my though was to enable the plots to get more insight on the convergence problem, I manage to rebuild, but CIMG code bailed out, I’m guessing there is some sort of version issue. need to shift to work myself now, to be continued, thanks

20Mhz

07/15/2020, 1:21 PM

I was missing -D cimg_use_jpeg flag. now works, will see

mehdi

07/15/2020, 1:23 PM

It generates really cool visuals on larger designs usually 👌

20Mhz

07/15/2020, 1:25 PM

looking odd?

20Mhz

07/15/2020, 1:27 PM

thats just after the first failure

Copy code

[InitialPlace]  Iter: 1 CG Error: 6.41183e-08 HPWL: 8071794
INFO: ./plot/cell/ip_1.jpg image has been saved

mehdi

07/15/2020, 1:31 PM

As I mentioned the placer diverges on tiny area butnI think this issue was fixed. I don't see this divergence when I increase the core size. I will check later and get back to you. Can you try a larger design? Aes or jpeg?

20Mhz

07/15/2020, 1:31 PM

20Mhz

07/15/2020, 2:04 PM

found it, I had accidentally removed the density option, at least now I have pretty screenshots :)

mehdi

07/15/2020, 2:12 PM

😅 great! What are you using them for?

20Mhz

07/15/2020, 2:20 PM

I’m just testing, what I meant is that I created the screenshot for debugging, but at the end It was just a typo xD

mehdi

07/15/2020, 2:23 PM

BTW, what is the change you made to get the visuals?

20Mhz

07/15/2020, 2:27 PM

OpenROAD-flow/tools/build/OpenROAD/src/replace/CMakeFiles/replace.dir/flags.make

Copy code

CXX_DEFINES = -DOPENROAD_BUILD -D ENABLE_CIMG_LIB -D cimg_use_jpeg
CXX_INCLUDES = -I /usr/local//opt/libjpeg/include -I /opt//X11/include/ -I/Users/ronaldv/Projects/repositories/CImg ...

✅ 1

20Mhz

07/25/2020, 4:00 PM

@mkk

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