# PicoCalc uLisp 4.7b benchmarks and images

**URL:** <https://forum.clockworkpi.com/t/picocalc-ulisp-4-7b-benchmarks-and-images/16511>\
**Category:** PicoCalc\
**Created:** [April 3, 2025, 11:59pm UTC](https://forum.clockworkpi.com/t/picocalc-ulisp-4-7b-benchmarks-and-images/16511 "2025-04-03T23:59:21Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![picolisper](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.clockworkpi.com/picolisper/32/11491_2.png) [@picolisper](https://forum.clockworkpi.com/u/picolisper)\
**Post date:** [April 3, 2025, 11:59pm UTC](https://forum.clockworkpi.com/t/picocalc-ulisp-4-7b-benchmarks-and-images/16511/1 "2025-04-03T23:59:21Z")

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I’ve done some [benchmarks](https://dev.metacircular.net/2025/04/first-light) with the PicoCalc running uLisp 4.7b:

| | ARM @ 150MHz | ARM @ 200MHz | RISC-V @ 150MHz | RISC-V @ 200MHz |
| --- | --- | --- | --- | --- |
| tak | 4.6s | 3.4s | 6.6s | 4.8s |
| fib | 3.2s | 2.4s | 4.9s | 3.6s |
| q | 6.2s | 4.6s | 9.5s | 6.7s |
| q2 | 11.3s | 8.4s | 16.7s | 12.0s |
| factor | 1.6s | 1.2s | 2.2s | 1.6s |
| sieve | 18.1s | 13.6s | 23.6 | 17.1s |

I also have some [images built](https://dev.metacircular.net/picocalc-uf2) for anyone that wants to try it.

I sent off my patches to the uLisp author, who is trying to add support for the PicoCalc in uLisp right now.

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**Author:** ![mih](https://avatars.discourse-cdn.com/v4/letter/m/b782af/32.png) [@mih](https://forum.clockworkpi.com/u/mih)\
**Post date:** [April 9, 2025, 10:02pm UTC](https://forum.clockworkpi.com/t/picocalc-ulisp-4-7b-benchmarks-and-images/16511/2 "2025-04-09T22:02:31Z")

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Did not found repo with ulisp 4.7b sources with PicoCalc patches, so made an simple port of patches in [https://github.com/mhbvr/ulisp-arm/tree/picocalc\_orig](https://github.com/mhbvr/ulisp-arm/tree/picocalc_orig)

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**Author:** ![DigitalDreams](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.clockworkpi.com/digitaldreams/32/16007_2.png) [@DigitalDreams](https://forum.clockworkpi.com/u/DigitalDreams)\
**Post date:** [April 9, 2025, 10:43pm UTC](https://forum.clockworkpi.com/t/picocalc-ulisp-4-7b-benchmarks-and-images/16511/3 "2025-04-09T22:43:06Z")

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Any chance you can do with the latest MMBasic (v6.00) too for comparison ?

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<div class="post-metadata">

**Author:** ![picolisper](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.clockworkpi.com/picolisper/32/11491_2.png) [@picolisper](https://forum.clockworkpi.com/u/picolisper)\
**Post date:** [April 9, 2025, 10:59pm UTC](https://forum.clockworkpi.com/t/picocalc-ulisp-4-7b-benchmarks-and-images/16511/4 "2025-04-09T22:59:43Z")

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I handed off my patches to the uLisp author and quickly started hacking on my own custom uLisp for the board, no public repo right now.