Forum Discussion
Contributorseed -> how to get same SOF for each compilation run?
The source files drive the logic generation / mapping phases.
So if you compile with the exact same sources, the logic produced will be exactly the same.
The SEED value only drives the fitter.
Different SEED values will produce different placements of the exact same logic.
So if you don't change the source files, the logic will be the same.
If you don't change the seed, the placement will be the same.
ContributorOK... I've checked the report files... The SEED is located in the *.fit.rpt and *.syn.rpt files.
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From the *.fit.rpt file:
Fitter Initial Placement Seed : 1
But this is a seed for the FITTER ONLY (am I wrong?)
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But in the *.syn.rpt, there are many other seeds (see below)
So, which one should I choose for putting it to my QSF as a global SEED? Should I put all of these seeds (for Fitter and also for Synthesizer) in order to receive the same compilation results?
Anyway, from *.syn.rpt, It seems that each IP was synthesized with its own SEED, but where is the SEED which has been used for synthesizing the Glue Logic?
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From *.syn.rpt file:
C:\Projects\barracuda\ASIC\TX\synt\quartus\output_files\barracuda_tx_top.syn.rpt(10790): ; hssi_10g_tx_pcs_pseudo_seed_a ; 288230376151711743 ; String ;
C:\Projects\barracuda\ASIC\TX\synt\quartus\output_files\barracuda_tx_top.syn.rpt(10791): ; hssi_10g_tx_pcs_pseudo_seed_b ; 288230376151711743 ; String ;
C:\Projects\barracuda\ASIC\TX\synt\quartus\output_files\barracuda_tx_top.syn.rpt(11644): ; hssi_10g_tx_pcs_pseudo_seed_a ; 1111111111111111111111111111111111111111111111111111111111 ; Unsigned Binary ;
C:\Projects\barracuda\ASIC\TX\synt\quartus\output_files\barracuda_tx_top.syn.rpt(11645): ; hssi_10g_tx_pcs_pseudo_seed_b ; 1111111111111111111111111111111111111111111111111111111111 ; Unsigned Binary ;
C:\Projects\barracuda\ASIC\TX\synt\quartus\output_files\barracuda_tx_top.syn.rpt(12450): ; hssi_10g_tx_pcs_pseudo_seed_a ; 1111111111111111111111111111111111111111111111111111111111 ; Unsigned Binary ;
C:\Projects\barracuda\ASIC\TX\synt\quartus\output_files\barracuda_tx_top.syn.rpt(12451): ; hssi_10g_tx_pcs_pseudo_seed_b ; 1111111111111111111111111111111111111111111111111111111111 ; Unsigned Binary ;
C:\Projects\barracuda\ASIC\TX\synt\quartus\output_files\barracuda_tx_top.syn.rpt(13263): ; hssi_10g_tx_pcs_pseudo_seed_a ; 1111111111111111111111111111111111111111111111111111111111 ; Unsigned Binary ;
C:\Projects\barracuda\ASIC\TX\synt\quartus\output_files\barracuda_tx_top.syn.rpt(13264): ; hssi_10g_tx_pcs_pseudo_seed_b ; 1111111111111111111111111111111111111111111111111111111111 ; Unsigned Binary ;
C:\Projects\barracuda\ASIC\TX\synt\quartus\output_files\barracuda_tx_top.syn.rpt(14090): ; hssi_10g_tx_pcs_pseudo_seed_a ; 1111111111111111111111111111111111111111111111111111111111 ; Unsigned Binary ;
