# Where do I find the amount of computation (CPU) time taken by AMPL or by a solver?

**URL:** https://discuss.ampl.com/t/where-do-i-find-the-amount-of-computation-cpu-time-taken-by-ampl-or-by-a-solver/49
**Category:** FAQs
**Tags:** displays-results
**Created:** [December 15, 2021, 5:25pm UTC](https://discuss.ampl.com/t/where-do-i-find-the-amount-of-computation-cpu-time-taken-by-ampl-or-by-a-solver/49 "2021-12-15T17:25:13Z")
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### Author: ![megrobert](https://avatars.discourse-cdn.com/v4/letter/m/d07c76/32.png) [@megrobert](https://discuss.ampl.com/u/megrobert)
#### Post date: [December 15, 2021, 5:25pm UTC](https://discuss.ampl.com/t/where-do-i-find-the-amount-of-computation-cpu-time-taken-by-ampl-or-by-a-solver/49/1 "2021-12-15T17:25:13Z")

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AMPL provides the following built-in timing parameters such as `_ampl_time` and `_total_solve_time` . You’ll find the complete list in [Table A-14](https://ampl.com/BOOK/CHAPTERS/24-refman.pdf#page=44) in the reference appendix of the AMPL book. These timing parameters can be used in all the same ways as ordinary AMPL parameters defined through param statements. Thus in particular you can show their values (or the values of expressions involving them) by use of `display` or `printf` commands.