# \[AMPL 24580\] generate a pool with several solutions (not optimal)

**URL:** https://discuss.ampl.com/t/ampl-24580-generate-a-pool-with-several-solutions-not-optimal/445
**Category:** Google Group Mirror
**Created:** [March 20, 2023, 1:19am UTC](https://discuss.ampl.com/t/ampl-24580-generate-a-pool-with-several-solutions-not-optimal/445 "2023-03-20T01:19:49Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![juan.carlos](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.ampl.com/juan.carlos/32/192_2.png) [@juan.carlos](https://discuss.ampl.com/u/juan.carlos)
#### Post date: [March 20, 2023, 1:19am UTC](https://discuss.ampl.com/t/ampl-24580-generate-a-pool-with-several-solutions-not-optimal/445/1 "2023-03-20T01:19:49Z")

</div>

Hi,

I’m trying to generate a pool with optimal solutions. However, after executing my model for 8 hours, I didn’t find an optimal solution.  
The solution I found was: _absmipgap = 0.036, relmipgap = 0.6_

Therefore, I decided to generate a pool of solutions that are the same or better than the one I found, using these options:

_‘poolstub=allopt populate=2 populatelim=5 poolintensity=4 poolagap=0.005 poolreplace=1 timelimit=3600’_

However, after executing 1 hour, it printed only 2 solutions that are identically the same.

So, which options do you recommend ? I gave up finding several optimal solutions, but some solutions that are more or less the same or better would work !

In addition, why did it print two solutions identically the same ?

Thanks in advance