why cannot I pass the "Cell Placement" in SE? The site utilization is = 140.2 is too high! Impossibl

I set the row utilization in "initialization floorplan" to be 70%,

Can anybody tell me why I get error message in after "Cell Placement"
to be "too high row utilization -- 140%"?

thanks a lot,

-Walalla

--------------------------------------------------------------------------
15:58:56 * PLACE : The site utilization is = 140.2 is too high!
** SE-USER-61 ERROR **
15:58:56 * PLACE : * Impossible to place without overlaps!

--------------------------------------------------------------------------


15:58:47 * PLACE :
15:58:47 * PLACE : Begin LEF/DEF in ...
15:58:47 * PLACE : Reading "dbs/fir_srg.opt.lef" ...
15:58:51 * PLACE : Reading "dbs/fir_srg.opt.def" ...
** SE-USER-60 WARNING **
15:58:53 * PLACE : design has no clock net
15:58:53 * PLACE : A total of 1 warning.
15:58:53 * PLACE : Read in 11 layers, 4 routing layers, 0 overlap
layer
15:58:53 * PLACE : Read in 132 macros, 18 used
15:58:53 * PLACE : Read in 414 components
15:58:53 * PLACE : 414 core components: 414 unplaced, 0 placed, 0
fixed
15:58:53 * PLACE : Read in 17 physical pins
15:58:53 * PLACE : 17 physical pins: 0 unplaced, 17 placed, 0 fixed
15:58:53 * PLACE : Read in 2 logical pins
15:58:53 * PLACE : Read in 429 nets
15:58:53 * PLACE : Read in 3 special nets
15:58:53 * PLACE : Read in 2056 terminals
15:58:53 * PLACE : End LEF/DEF in: cpu: 0:00:04, real: 0:00:07, peak:
16.70 megs.
15:58:53 * PLACE :
15:58:53 * PLACE : Begin buildData ...
15:58:53 * PLACE : SiliconEnsemble(TM) placement mode
15:58:53 * PLACE : design name = fir_srg
15:58:53 * PLACE : number of instance = 414
15:58:53 * PLACE : number of placeable core instance = 414
15:58:53 * PLACE : number of fixed core instance = 0
15:58:53 * PLACE : number of placeable block instance = 0
15:58:53 * PLACE : number of fixed block instance = 0
15:58:53 * PLACE : number of placeable IO instance = 0
15:58:53 * PLACE : number of fixed IO instance = 0
15:58:53 * PLACE : number of pin = 17
15:58:53 * PLACE : number of placeable spare cell = 0
15:58:53 * PLACE : number of special net = 3
15:58:54 * PLACE : number of net = 429
15:58:54 * PLACE : number of site = 1
15:58:54 * PLACE : number of core site = 1
15:58:54 * PLACE : number of pad site = 0
15:58:54 * PLACE : core box = ((-151.50 -126.00)(153.00 130.00))
15:58:54 * PLACE : row orientation = horizontal, row height = 1
15:58:54 * PLACE : number of core site per core row = 203
15:58:54 * PLACE : number of core row = 19
15:58:54 * PLACE :
15:58:54 * PLACE : number of routing layer = 4
15:58:54 * PLACE : layer 1 = Metal1 (metal1), average pitch = 1.5, dir
= horizontal
15:58:54 * PLACE : tracks in core = 171, freeTrackPct.1 = 10%
15:58:54 * PLACE : average blockage for core inst = 100%
15:58:55 * PLACE : LLC.Ignore.Layer.1 = true
15:58:55 * PLACE : layer 2 = Metal2 (metal2), average pitch = 1.5, dir
= vertical
15:58:55 * PLACE : tracks in core = 203, freeTrackPct.2 = 70%
15:58:55 * PLACE : average blockage for core inst = 10%
15:58:55 * PLACE : LLC.Ignore.Layer.2 = true
15:58:55 * PLACE : layer 3 = Metal3 (metal3), average pitch = 1.5, dir
= horizontal
15:58:55 * PLACE : tracks in core = 171, freeTrackPct.3 = 100%
15:58:55 * PLACE : average blockage for core inst = 0%
15:58:55 * PLACE : LLC.Ignore.Layer.3 = true
15:58:55 * PLACE : layer 4 = Metal4 (metal4), average pitch = 3.0, dir
= vertical
15:58:55 * PLACE : tracks in core = 102, freeTrackPct.4 = 60%
15:58:55 * PLACE : average blockage for core inst = 0%
15:58:55 * PLACE : LLC.Ignore.Layer.4 = true
15:58:55 * PLACE :
15:58:55 * PLACE : total site size = 3857 (100.00%)
15:58:55 * PLACE : total core inst size = 5406 (140.16%)
qty=414
15:58:55 * PLACE : average row utilization = 140.16%
15:58:55 * PLACE :
15:58:55 * PLACE : num inst of height 2 = 414 5406 sites
(100.0% of inst sites)
15:58:56 * PLACE : min-max inst length = 3-22
15:58:56 * PLACE : average inst length = 6.53, standard deviation =
5.53
15:58:56 * PLACE :
15:58:56 * PLACE : The site utilization is = 140.2 is too high!
** SE-USER-61 ERROR **
15:58:56 * PLACE : * Impossible to place without overlaps!
15:58:56 * PLACE : PLACE FAILS
Place interface : Elapsed date = 0
Place interface : Elapsed time = 0:00:20
Place interface : CPU time used = 0:00:05

 

Look at your floor plan output to see what the core size, site size
and utilization are at that point. It is possible that you're using
the Floorplan command in SE incorrectly.

Muzaffer Kal

http://www.dspia.com
ASIC/FPGA design/verification consulting specializing in DSP algorithm implementations