LabVIEW fpga compile: translation error then again translate

Hello everyone,

I have a question about the process of compiling LV FPGA.

The context:

I am compiling a binary FPGA for the NOR-5644R (viterx6 inisde). the process is quite long (up to 7 hours depending on how is our CLIP). I am canvassing any idea of attaching the compilation process.

The fact:

By analyzing the log file of the previous compilation, I noticed that the stage translate is made twice, probably because one is a failure. the excerpt from log files are copy/paste below.

Further, it seems the errors (at least some of them) translate the first are induced by the commented lines of NOR provided file UCF (RfRioFpga.ucf)

The question:

Why to translate step to do it twice (the first being failed)? would it not quicker to make only the second succefull one? in other words, it is really necessary for the first fails to translate step for the FPGA binay?

Any ideas?

Thanks in advance!

See you soon,.

Patrice

----

log file extract 1:

"...

NGDBUILD Design summary of results:
Error number: 387
Number of warnings: 1443

Total in time REAL until the end of the NGDBUILD: 2 h 16 min 45 s
Time CPU until total NGDBUILD: 2 h 11 min 21 sec

One or more errors were found during the NGDBUILD. No file NGD will be written.

Writing the file of log NGDBUILD 'RfRioFpga.bld '...

'Translate' process failed

..."

log file excerpt 2:

"...

NGDBUILD Design summary of results:
Number of errors: 0
Number of warnings: 818

Writing the file 'RfRioFpga.ngd '... NGD
Total in time REAL until the end of the NGDBUILD: 29 min 17sec
Time CPU until total NGDBUILD: 27 min 33sec

Writing the file of log NGDBUILD 'RfRioFpga.bld '...

NGDBUILD done.

'Translate' process completed successfully

..."

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Hi Patrice,

It seems strange that it performs this step two times (and was worried when I saw the first time), but there is good reason for that, certainly.  LabVIEW inserts constraints for components, he adds, but sometimes the components get optimized out by the compiler.  When the compiler encounters stressed that points to the now non-existent component, it error.  LabVIEW circumvents this by running the process to translate two times. The first time, it may fail. LabVIEW will remove the constraints that fail, then run again translate it.  Unfortunately there is no way around this problem.

Tags: NI Software

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