09-06-2012 02:33 AM
Global Optimization does not work in my design, while it compiles and work w/o this option.
When allowing "global optimization" in MAP, the Implementation process stops with :
ERROR:ConstraintSystem:300 - In file: topdesign.pcf(360): Syntax error at or before 'K': 'K' is not a valid constraint
ERROR:Par:51 - The .pcf file contains errors. PAR cannot proceed.
Somebody having the same?
I discovered total crashes with the g.o. option in former ISE and stopped using this.
(a webcase is pending).
Now, after having started with 14.2, I tried this again but there still seem to be problems.
09-06-2012 03:34 PM
10-11-2012 12:03 AM
This problem occurs when the -global_opt option is turned on during MAP. It appears that invalid characters are written to the physical constraints file (.pcf) at the end of MAP.
This issue will not be fixed as the -global_opt option is being deprecated and will not be available to use for the newer devices or next generation tools.
The following options can be used as possible workarounds:
10-11-2012 04:11 AM
I wonder, what g.o. in fact does. Is it right assuming that it only overrides other settings?
Or is it an additional directive?
> switching to Linux
Not so easy, if the companies tell us engineers which HW and SW infrastructure to use. :-)