Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
17257 Discussions

Error : exceeding the number of LABs

Altera_Forum
Honored Contributor II
‎07-11-2010 05:05 AM
1,416 Views

Hello?  

 

I have trouble at compiling a code; the error message shows that the fitter needs more number of LABs which the hardware (Stratix ii 180) can support. Right before having this error message, I added one multiplier (32bit*32bit) for single precision floating point and Lots of DFFE (32 bit - total about 120 DFFEs). Which of the two would be more responsible to this error message? I think that LABs are more related to logic elements but I don't have any clue for this situation. Thanks,  

 

- John
0 Kudos

Link Copied

2 Replies
Altera_Forum
Honored Contributor II
‎07-11-2010 08:38 AM
762 Views

Seems like you had a rather high device utilization before you added the said elements. 

 

Even if the device fit fails, you can determine the estimated resource utilzation of each design entity in the compilation report under Analysis & Synthesis/Resource Utilization. It will answer your question.
0 Kudos
Copy link
Altera_Forum
Honored Contributor II
‎07-11-2010 03:30 PM
762 Views

and also - if you use the lpm_mult - you can choose to implement it in DSP blocks (which if I'm not mistaken - do exist on the StratixII 180 types) instead of logic elements. I think this might help.

0 Kudos
Copy link
Reply

Community support is provided Monday to Friday. Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.