Gurobi developer, former CPLEX and SCIP developer, mixed integer programminghttps://bsky.app/profile/achterberg.bsky.socialhttps://bsky.app/profile/achterberg.bsky.social/post/3mr2tlq5p6223Ed has another paper on arxiv: using PDHG as a low accuracy LP solver inside branch-and-bound to get a primal heuristic for MIPs. arxiv.org/abs/2607.14483 https://arxiv.org/abs/2607.1448320 Jul 2026 08:06 +0000at://did:plc:wcraftajyvr3x2i37754guee/app.bsky.feed.post/3mr2tlq5p6223https://bsky.app/profile/achterberg.bsky.social/post/3mp57e5r73k2sAs a successor to the Burrito Optimization Game, Gurobi has launched a new online game for learning and teaching basic optimization. Check out the Gurobean Coffee Optimization Game! www.gurobean.com https://www.gurobean.com25 Jun 2026 19:52 +0000at://did:plc:wcraftajyvr3x2i37754guee/app.bsky.feed.post/3mp57e5r73k2shttps://bsky.app/profile/achterberg.bsky.social/post/3mk5ysswsvs2zarxiv.org/abs/2604.16192 Ed is pretty productive these days. Another paper on LP solving, comparing simplex, barrier and PDHG on artificial models. https://arxiv.org/abs/2604.1619223 Apr 2026 12:21 +0000at://did:plc:wcraftajyvr3x2i37754guee/app.bsky.feed.post/3mk5ysswsvs2zhttps://bsky.app/profile/achterberg.bsky.social/post/3m6eqos23222zAnother article by Ed Rothberg on PDHG. arxiv.org/abs/2511.13894 https://arxiv.org/abs/2511.1389424 Nov 2025 11:42 +0000at://did:plc:wcraftajyvr3x2i37754guee/app.bsky.feed.post/3m6eqos23222zhttps://bsky.app/profile/achterberg.bsky.social/post/3m535cqucxk27Nice and short article by Ed Rothberg on concurrent crossover for PDHG (PDHG on GPU, crossover on CPU). arxiv.org/abs/2510.24429 https://arxiv.org/abs/2510.2442907 Nov 2025 22:36 +0000at://did:plc:wcraftajyvr3x2i37754guee/app.bsky.feed.post/3m535cqucxk27https://bsky.app/profile/achterberg.bsky.social/post/3m52he3aenc27Nice report about the Gurobi Summit in Vienna from Tim Varelmann, winner of the tuning challenge: https://www.bluebirdoptimization.com/blog-posts-en/faster-solutions-sweeter-rewards07 Nov 2025 16:03 +0000at://did:plc:wcraftajyvr3x2i37754guee/app.bsky.feed.post/3m52he3aenc27https://bsky.app/profile/achterberg.bsky.social/post/3li5k5z2jls2oI am excited to announce the Gurobi Engineering MIP School: https://jobs.lever.co/GurobiOptimization/7498617e-c256-4265-a6ea-8e3917deddaf We are looking for passionate programmers who like efficient algorithms, data structures, math and optimization and want to learn the ins and outs of mixed integer programming in theory and practice.14 Feb 2025 15:43 +0000at://did:plc:wcraftajyvr3x2i37754guee/app.bsky.feed.post/3li5k5z2jls2o