Solving and benchmarking QUBO problems with Gurobi in Python
https://www.reddit.com/r/programming/comments/1vija3m/solving_and_benchmarking_qubo_problems_with/
<!-- SC_OFF -->State-of-the-art classical optimizer Gurobi for Quadratic Unconstrained Binary Optimization (QUBO) problems. The core gurobipy implementation for QUBO is relatively compact: ```python model = gp.Model() x = model.addMVar(n, vtype=GRB.BINARY) model.setObjective(x @ Q @ x, GRB.MINIMIZE) model.optimize() solution = x.X.astype(int) objective = model.ObjVal ``` Complete workflow in Python. First formulate a graph problem (weighted Max-Cut) as QUBO, solve it with Gurobi, benchmark increasingly large instances, and understand what the solver is doing beyond the optimize() call. Interested in feedback on the modeling, benchmarking methodology, and which additional Gurobi metrics would make the comparison more rigorous. <!-- SC_ON --> submitted by /u/Future_Ad7567 (https://www.reddit.com/user/Future_Ad7567)
[link] (https://youtu.be/TB1ny8o4ImQ) [comments] (https://www.reddit.com/r/programming/comments/1vija3m/solving_and_benchmarking_qubo_problems_with/)
https://www.reddit.com/r/programming/comments/1vija3m/solving_and_benchmarking_qubo_problems_with/
<!-- SC_OFF -->State-of-the-art classical optimizer Gurobi for Quadratic Unconstrained Binary Optimization (QUBO) problems. The core gurobipy implementation for QUBO is relatively compact: ```python model = gp.Model() x = model.addMVar(n, vtype=GRB.BINARY) model.setObjective(x @ Q @ x, GRB.MINIMIZE) model.optimize() solution = x.X.astype(int) objective = model.ObjVal ``` Complete workflow in Python. First formulate a graph problem (weighted Max-Cut) as QUBO, solve it with Gurobi, benchmark increasingly large instances, and understand what the solver is doing beyond the optimize() call. Interested in feedback on the modeling, benchmarking methodology, and which additional Gurobi metrics would make the comparison more rigorous. <!-- SC_ON --> submitted by /u/Future_Ad7567 (https://www.reddit.com/user/Future_Ad7567)
[link] (https://youtu.be/TB1ny8o4ImQ) [comments] (https://www.reddit.com/r/programming/comments/1vija3m/solving_and_benchmarking_qubo_problems_with/)
Here's why OOP makes a lot of sense to me.
https://www.reddit.com/r/programming/comments/1vikuz4/heres_why_oop_makes_a_lot_of_sense_to_me/
<!-- SC_OFF -->I kind of feel like OOP has a bad rep in the programming community. Personally, after having programmed Java for over 20 years, its object-oriented programming model feels very natural to me. So, I wanted to share how I think about programming, how I translate my ideas and thoughts to code, and why OOP is actually a really nice programming style for me. Perhaps it could help you out too. <!-- SC_ON --> submitted by /u/OSBY_Glabay (https://www.reddit.com/user/OSBY_Glabay)
[link] (https://youtu.be/MAnXlpXpFRQ) [comments] (https://www.reddit.com/r/programming/comments/1vikuz4/heres_why_oop_makes_a_lot_of_sense_to_me/)
https://www.reddit.com/r/programming/comments/1vikuz4/heres_why_oop_makes_a_lot_of_sense_to_me/
<!-- SC_OFF -->I kind of feel like OOP has a bad rep in the programming community. Personally, after having programmed Java for over 20 years, its object-oriented programming model feels very natural to me. So, I wanted to share how I think about programming, how I translate my ideas and thoughts to code, and why OOP is actually a really nice programming style for me. Perhaps it could help you out too. <!-- SC_ON --> submitted by /u/OSBY_Glabay (https://www.reddit.com/user/OSBY_Glabay)
[link] (https://youtu.be/MAnXlpXpFRQ) [comments] (https://www.reddit.com/r/programming/comments/1vikuz4/heres_why_oop_makes_a_lot_of_sense_to_me/)
A shell exclamation mark is not for yelling. Be lazy. | Filip Roséen
https://www.reddit.com/r/programming/comments/1vilqxz/a_shell_exclamation_mark_is_not_for_yelling_be/
submitted by /u/refp (https://www.reddit.com/user/refp)
[link] (https://refp.se/articles/your-shell-and-the-lazy-exclamation-mark) [comments] (https://www.reddit.com/r/programming/comments/1vilqxz/a_shell_exclamation_mark_is_not_for_yelling_be/)
https://www.reddit.com/r/programming/comments/1vilqxz/a_shell_exclamation_mark_is_not_for_yelling_be/
submitted by /u/refp (https://www.reddit.com/user/refp)
[link] (https://refp.se/articles/your-shell-and-the-lazy-exclamation-mark) [comments] (https://www.reddit.com/r/programming/comments/1vilqxz/a_shell_exclamation_mark_is_not_for_yelling_be/)
DRY vs. SRP
https://www.reddit.com/r/programming/comments/1virrlk/dry_vs_srp/
<!-- SC_OFF -->After re-reading "Clean Architecture" I ended up with some confusion regarding Bob's take on repetition and single responsibility. Ge defines the SRP as a function only serving one actor. Dies that mean, that repetitve code is justified according to him, as long as it serves seperate actors/user groups? I am aware that such decisions depend on the specific situation. I was just wondering if others found the same contradiction, or if i misunderstood it. Thanks <!-- SC_ON --> submitted by /u/TalesGameStudio (https://www.reddit.com/user/TalesGameStudio)
[link] (http://uncle-bob.com/) [comments] (https://www.reddit.com/r/programming/comments/1virrlk/dry_vs_srp/)
https://www.reddit.com/r/programming/comments/1virrlk/dry_vs_srp/
<!-- SC_OFF -->After re-reading "Clean Architecture" I ended up with some confusion regarding Bob's take on repetition and single responsibility. Ge defines the SRP as a function only serving one actor. Dies that mean, that repetitve code is justified according to him, as long as it serves seperate actors/user groups? I am aware that such decisions depend on the specific situation. I was just wondering if others found the same contradiction, or if i misunderstood it. Thanks <!-- SC_ON --> submitted by /u/TalesGameStudio (https://www.reddit.com/user/TalesGameStudio)
[link] (http://uncle-bob.com/) [comments] (https://www.reddit.com/r/programming/comments/1virrlk/dry_vs_srp/)
Assembly Hall of Shame: Racing to the bottom of CPU performance
https://www.reddit.com/r/programming/comments/1vjketg/assembly_hall_of_shame_racing_to_the_bottom_of/
submitted by /u/f311a (https://www.reddit.com/user/f311a)
[link] (https://github.com/xoreaxeaxeax/asm-hall-of-shame) [comments] (https://www.reddit.com/r/programming/comments/1vjketg/assembly_hall_of_shame_racing_to_the_bottom_of/)
https://www.reddit.com/r/programming/comments/1vjketg/assembly_hall_of_shame_racing_to_the_bottom_of/
submitted by /u/f311a (https://www.reddit.com/user/f311a)
[link] (https://github.com/xoreaxeaxeax/asm-hall-of-shame) [comments] (https://www.reddit.com/r/programming/comments/1vjketg/assembly_hall_of_shame_racing_to_the_bottom_of/)
Hungarian Assignment Algorithm: Applied Optimal Transport for Programmers
https://www.reddit.com/r/programming/comments/1vjndxo/hungarian_assignment_algorithm_applied_optimal/
submitted by /u/DataBaeBee (https://www.reddit.com/user/DataBaeBee)
[link] (https://leetarxiv.substack.com/p/hungarian-assignment-algorithm) [comments] (https://www.reddit.com/r/programming/comments/1vjndxo/hungarian_assignment_algorithm_applied_optimal/)
https://www.reddit.com/r/programming/comments/1vjndxo/hungarian_assignment_algorithm_applied_optimal/
submitted by /u/DataBaeBee (https://www.reddit.com/user/DataBaeBee)
[link] (https://leetarxiv.substack.com/p/hungarian-assignment-algorithm) [comments] (https://www.reddit.com/r/programming/comments/1vjndxo/hungarian_assignment_algorithm_applied_optimal/)
The Sentinel Object Pattern in Python
https://www.reddit.com/r/programming/comments/1vjpp19/the_sentinel_object_pattern_in_python/
<!-- SC_OFF -->Officially added in Python 3.15 https://peps.python.org/pep-0661/ <!-- SC_ON --> submitted by /u/Grouchy-Trade-7250 (https://www.reddit.com/user/Grouchy-Trade-7250)
[link] (https://python-patterns.guide/python/sentinel-object/) [comments] (https://www.reddit.com/r/programming/comments/1vjpp19/the_sentinel_object_pattern_in_python/)
https://www.reddit.com/r/programming/comments/1vjpp19/the_sentinel_object_pattern_in_python/
<!-- SC_OFF -->Officially added in Python 3.15 https://peps.python.org/pep-0661/ <!-- SC_ON --> submitted by /u/Grouchy-Trade-7250 (https://www.reddit.com/user/Grouchy-Trade-7250)
[link] (https://python-patterns.guide/python/sentinel-object/) [comments] (https://www.reddit.com/r/programming/comments/1vjpp19/the_sentinel_object_pattern_in_python/)
Beyond Senior - Creating Hope
https://www.reddit.com/r/programming/comments/1vkdq8p/beyond_senior_creating_hope/
<!-- SC_OFF -->Every time I leave a role I try and write up where my philosophy landed and what I want to take into my next role. Having seen this play out at enough companies over the years to where people progressively lose motivation and stop believing change is possible I've come to the opinion that one of the most valuable things we can do as engineering leaders is to provide hope. The post goes more into it, but I do not mean any vapid rah-rah motivational speeches, I mean earning back that hope every day by snowballing small wins into larger ones and making people believe that their effort matters. <!-- SC_ON --> submitted by /u/keyslemur (https://www.reddit.com/user/keyslemur)
[link] (https://baweaver.com/writing/2026/08/09/beyond-senior-creating-hope/) [comments] (https://www.reddit.com/r/programming/comments/1vkdq8p/beyond_senior_creating_hope/)
https://www.reddit.com/r/programming/comments/1vkdq8p/beyond_senior_creating_hope/
<!-- SC_OFF -->Every time I leave a role I try and write up where my philosophy landed and what I want to take into my next role. Having seen this play out at enough companies over the years to where people progressively lose motivation and stop believing change is possible I've come to the opinion that one of the most valuable things we can do as engineering leaders is to provide hope. The post goes more into it, but I do not mean any vapid rah-rah motivational speeches, I mean earning back that hope every day by snowballing small wins into larger ones and making people believe that their effort matters. <!-- SC_ON --> submitted by /u/keyslemur (https://www.reddit.com/user/keyslemur)
[link] (https://baweaver.com/writing/2026/08/09/beyond-senior-creating-hope/) [comments] (https://www.reddit.com/r/programming/comments/1vkdq8p/beyond_senior_creating_hope/)
Change Your Root: Chroot Basics
https://www.reddit.com/r/programming/comments/1vllv5l/change_your_root_chroot_basics/
submitted by /u/iximiuz (https://www.reddit.com/user/iximiuz)
[link] (https://labs.iximiuz.com/tutorials/change-your-root-chroot-basics-1cef74c2) [comments] (https://www.reddit.com/r/programming/comments/1vllv5l/change_your_root_chroot_basics/)
https://www.reddit.com/r/programming/comments/1vllv5l/change_your_root_chroot_basics/
submitted by /u/iximiuz (https://www.reddit.com/user/iximiuz)
[link] (https://labs.iximiuz.com/tutorials/change-your-root-chroot-basics-1cef74c2) [comments] (https://www.reddit.com/r/programming/comments/1vllv5l/change_your_root_chroot_basics/)
The dangers of Postgres subtransactions
https://www.reddit.com/r/programming/comments/1vlm2vs/the_dangers_of_postgres_subtransactions/
<!-- SC_OFF -->Really good article explaining the implementation detail within Postgres regarding subtransactions. Very cool benchmark that I was unaware of <!-- SC_ON --> submitted by /u/Wooden-News-962 (https://www.reddit.com/user/Wooden-News-962)
[link] (https://planetscale.com/blog/the-dangers-of-postgres-subtransactions) [comments] (https://www.reddit.com/r/programming/comments/1vlm2vs/the_dangers_of_postgres_subtransactions/)
https://www.reddit.com/r/programming/comments/1vlm2vs/the_dangers_of_postgres_subtransactions/
<!-- SC_OFF -->Really good article explaining the implementation detail within Postgres regarding subtransactions. Very cool benchmark that I was unaware of <!-- SC_ON --> submitted by /u/Wooden-News-962 (https://www.reddit.com/user/Wooden-News-962)
[link] (https://planetscale.com/blog/the-dangers-of-postgres-subtransactions) [comments] (https://www.reddit.com/r/programming/comments/1vlm2vs/the_dangers_of_postgres_subtransactions/)
Squeak 6.1 (a modern Smalltalk programming environment implemented in itself) was released!
https://www.reddit.com/r/programming/comments/1vlqtmx/squeak_61_a_modern_smalltalk_programming/
<!-- SC_OFF --> After more than 4 years of work, our community has put together a big bouquet of new capabilities and improvements: A new tree browser for navigating and organizing classes Objectland, bringing back and extending the colorful world of examples from Squeak 3 Plenty of new features, bugfixes, and speed-ups for programming tools, the Morphic UI framework, and the rest of the system Original announcement on Fosstodon: https://fosstodon.org/@squeak/117071273007117118 <!-- SC_ON --> submitted by /u/LinqLover (https://www.reddit.com/user/LinqLover)
[link] (https://squeak.org/release_notes/6.1/) [comments] (https://www.reddit.com/r/programming/comments/1vlqtmx/squeak_61_a_modern_smalltalk_programming/)
https://www.reddit.com/r/programming/comments/1vlqtmx/squeak_61_a_modern_smalltalk_programming/
<!-- SC_OFF --> After more than 4 years of work, our community has put together a big bouquet of new capabilities and improvements: A new tree browser for navigating and organizing classes Objectland, bringing back and extending the colorful world of examples from Squeak 3 Plenty of new features, bugfixes, and speed-ups for programming tools, the Morphic UI framework, and the rest of the system Original announcement on Fosstodon: https://fosstodon.org/@squeak/117071273007117118 <!-- SC_ON --> submitted by /u/LinqLover (https://www.reddit.com/user/LinqLover)
[link] (https://squeak.org/release_notes/6.1/) [comments] (https://www.reddit.com/r/programming/comments/1vlqtmx/squeak_61_a_modern_smalltalk_programming/)
Don't Stall Me Now: Hiding Memory Latency in eBPF
https://www.reddit.com/r/programming/comments/1vlwzdy/dont_stall_me_now_hiding_memory_latency_in_ebpf/
submitted by /u/mttd (https://www.reddit.com/user/mttd)
[link] (https://dl.acm.org/doi/10.1145/3789240.3829175) [comments] (https://www.reddit.com/r/programming/comments/1vlwzdy/dont_stall_me_now_hiding_memory_latency_in_ebpf/)
https://www.reddit.com/r/programming/comments/1vlwzdy/dont_stall_me_now_hiding_memory_latency_in_ebpf/
submitted by /u/mttd (https://www.reddit.com/user/mttd)
[link] (https://dl.acm.org/doi/10.1145/3789240.3829175) [comments] (https://www.reddit.com/r/programming/comments/1vlwzdy/dont_stall_me_now_hiding_memory_latency_in_ebpf/)
The fastest double-to-string algorithm you’ve never heard of
https://www.reddit.com/r/programming/comments/1vm65dm/the_fastest_doubletostring_algorithm_youve_never/
submitted by /u/mttd (https://www.reddit.com/user/mttd)
[link] (https://vitaut.net/posts/2026/yy-dtoa/) [comments] (https://www.reddit.com/r/programming/comments/1vm65dm/the_fastest_doubletostring_algorithm_youve_never/)
https://www.reddit.com/r/programming/comments/1vm65dm/the_fastest_doubletostring_algorithm_youve_never/
submitted by /u/mttd (https://www.reddit.com/user/mttd)
[link] (https://vitaut.net/posts/2026/yy-dtoa/) [comments] (https://www.reddit.com/r/programming/comments/1vm65dm/the_fastest_doubletostring_algorithm_youve_never/)
How Tailscale helped discover a 16+ year old SQLite WAL-Reset bug
https://www.reddit.com/r/programming/comments/1vmglvj/how_tailscale_helped_discover_a_16_year_old/
submitted by /u/callcifer (https://www.reddit.com/user/callcifer)
[link] (https://tailscale.com/blog/sqlite-wal-reset-bug) [comments] (https://www.reddit.com/r/programming/comments/1vmglvj/how_tailscale_helped_discover_a_16_year_old/)
https://www.reddit.com/r/programming/comments/1vmglvj/how_tailscale_helped_discover_a_16_year_old/
submitted by /u/callcifer (https://www.reddit.com/user/callcifer)
[link] (https://tailscale.com/blog/sqlite-wal-reset-bug) [comments] (https://www.reddit.com/r/programming/comments/1vmglvj/how_tailscale_helped_discover_a_16_year_old/)
Hardware researcher spins up 'CPU deoptimization' project to find the slowest single x86 instruction, creates hall of shame — worst offender takes 198 billion cycles spanning 62 seconds to execute
https://www.reddit.com/r/programming/comments/1vmhj23/hardware_researcher_spins_up_cpu_deoptimization/
submitted by /u/masiroo (https://www.reddit.com/user/masiroo)
[link] (https://www.tomshardware.com/pc-components/cpus/hardware-researcher-spins-up-cpu-deoptimization-project-to-find-the-slowest-machine-code-worst-offender-takes-198-billion-cycles-to-execute) [comments] (https://www.reddit.com/r/programming/comments/1vmhj23/hardware_researcher_spins_up_cpu_deoptimization/)
https://www.reddit.com/r/programming/comments/1vmhj23/hardware_researcher_spins_up_cpu_deoptimization/
submitted by /u/masiroo (https://www.reddit.com/user/masiroo)
[link] (https://www.tomshardware.com/pc-components/cpus/hardware-researcher-spins-up-cpu-deoptimization-project-to-find-the-slowest-machine-code-worst-offender-takes-198-billion-cycles-to-execute) [comments] (https://www.reddit.com/r/programming/comments/1vmhj23/hardware_researcher_spins_up_cpu_deoptimization/)
Preparing for Change: Safe Switching over Sealed APIs (Java)
https://www.reddit.com/r/programming/comments/1vmnuu2/preparing_for_change_safe_switching_over_sealed/
submitted by /u/joemwangi (https://www.reddit.com/user/joemwangi)
[link] (https://openjdk.org/projects/amber/guides/exhaustiveness-guide) [comments] (https://www.reddit.com/r/programming/comments/1vmnuu2/preparing_for_change_safe_switching_over_sealed/)
https://www.reddit.com/r/programming/comments/1vmnuu2/preparing_for_change_safe_switching_over_sealed/
submitted by /u/joemwangi (https://www.reddit.com/user/joemwangi)
[link] (https://openjdk.org/projects/amber/guides/exhaustiveness-guide) [comments] (https://www.reddit.com/r/programming/comments/1vmnuu2/preparing_for_change_safe_switching_over_sealed/)
Linus Torvalds Explains What Makes Linux So Fast
https://www.reddit.com/r/programming/comments/1vmoddq/linus_torvalds_explains_what_makes_linux_so_fast/
submitted by /u/Rechenplaner (https://www.reddit.com/user/Rechenplaner)
[link] (https://www.youtube.com/watch?v=RQ1IfKUD1nw) [comments] (https://www.reddit.com/r/programming/comments/1vmoddq/linus_torvalds_explains_what_makes_linux_so_fast/)
https://www.reddit.com/r/programming/comments/1vmoddq/linus_torvalds_explains_what_makes_linux_so_fast/
submitted by /u/Rechenplaner (https://www.reddit.com/user/Rechenplaner)
[link] (https://www.youtube.com/watch?v=RQ1IfKUD1nw) [comments] (https://www.reddit.com/r/programming/comments/1vmoddq/linus_torvalds_explains_what_makes_linux_so_fast/)
Node.js creator liberates Durable Objects from Cloudflare
https://www.reddit.com/r/programming/comments/1vmrnni/nodejs_creator_liberates_durable_objects_from/
submitted by /u/stronghup (https://www.reddit.com/user/stronghup)
[link] (https://www.theregister.com/devops/2026/08/12/nodejs-creator-liberates-durable-objects-from-cloudflare-with-celld/5286954) [comments] (https://www.reddit.com/r/programming/comments/1vmrnni/nodejs_creator_liberates_durable_objects_from/)
https://www.reddit.com/r/programming/comments/1vmrnni/nodejs_creator_liberates_durable_objects_from/
submitted by /u/stronghup (https://www.reddit.com/user/stronghup)
[link] (https://www.theregister.com/devops/2026/08/12/nodejs-creator-liberates-durable-objects-from-cloudflare-with-celld/5286954) [comments] (https://www.reddit.com/r/programming/comments/1vmrnni/nodejs_creator_liberates_durable_objects_from/)
Degradability
https://www.reddit.com/r/programming/comments/1vmssvs/degradability/
submitted by /u/fagnerbrack (https://www.reddit.com/user/fagnerbrack)
[link] (https://fagnerbrack.com/degradability-91ce5a6e2367) [comments] (https://www.reddit.com/r/programming/comments/1vmssvs/degradability/)
https://www.reddit.com/r/programming/comments/1vmssvs/degradability/
submitted by /u/fagnerbrack (https://www.reddit.com/user/fagnerbrack)
[link] (https://fagnerbrack.com/degradability-91ce5a6e2367) [comments] (https://www.reddit.com/r/programming/comments/1vmssvs/degradability/)
Programming smart pathing in Starcraft 2
https://www.reddit.com/r/programming/comments/1vmvxdz/programming_smart_pathing_in_starcraft_2/
submitted by /u/LaughNgamez (https://www.reddit.com/user/LaughNgamez)
[link] (https://www.youtube.com/watch?v=DfkFpxzdqZs) [comments] (https://www.reddit.com/r/programming/comments/1vmvxdz/programming_smart_pathing_in_starcraft_2/)
https://www.reddit.com/r/programming/comments/1vmvxdz/programming_smart_pathing_in_starcraft_2/
submitted by /u/LaughNgamez (https://www.reddit.com/user/LaughNgamez)
[link] (https://www.youtube.com/watch?v=DfkFpxzdqZs) [comments] (https://www.reddit.com/r/programming/comments/1vmvxdz/programming_smart_pathing_in_starcraft_2/)
Beyond WASI: Running any Rust application in the browser with BrowserPod 3.0
https://www.reddit.com/r/programming/comments/1vn7p6q/beyond_wasi_running_any_rust_application_in_the/
submitted by /u/vilgefortz91 (https://www.reddit.com/user/vilgefortz91)
[link] (https://labs.leaningtech.com/blog/browserpod-rust) [comments] (https://www.reddit.com/r/programming/comments/1vn7p6q/beyond_wasi_running_any_rust_application_in_the/)
https://www.reddit.com/r/programming/comments/1vn7p6q/beyond_wasi_running_any_rust_application_in_the/
submitted by /u/vilgefortz91 (https://www.reddit.com/user/vilgefortz91)
[link] (https://labs.leaningtech.com/blog/browserpod-rust) [comments] (https://www.reddit.com/r/programming/comments/1vn7p6q/beyond_wasi_running_any_rust_application_in_the/)