{"action":"opened","issue":{"url":"https://api.github.com/repos/JuliaOpt/JuMP.jl/issues/784","repository_url":"https://api.github.com/repos/JuliaOpt/JuMP.jl","labels_url":"https://api.github.com/repos/JuliaOpt/JuMP.jl/issues/784/labels{/name}","comments_url":"https://api.github.com/repos/JuliaOpt/JuMP.jl/issues/784/comments","events_url":"https://api.github.com/repos/JuliaOpt/JuMP.jl/issues/784/events","html_url":"https://github.com/JuliaOpt/JuMP.jl/issues/784","id":159669040,"number":784,"title":"Solver support for setvalue","user":{"login":"brad-sturt","id":2012630,"avatar_url":"https://avatars.githubusercontent.com/u/2012630?v=3","gravatar_id":"","url":"https://api.github.com/users/brad-sturt","html_url":"https://github.com/brad-sturt","followers_url":"https://api.github.com/users/brad-sturt/followers","following_url":"https://api.github.com/users/brad-sturt/following{/other_user}","gists_url":"https://api.github.com/users/brad-sturt/gists{/gist_id}","starred_url":"https://api.github.com/users/brad-sturt/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/brad-sturt/subscriptions","organizations_url":"https://api.github.com/users/brad-sturt/orgs","repos_url":"https://api.github.com/users/brad-sturt/repos","events_url":"https://api.github.com/users/brad-sturt/events{/privacy}","received_events_url":"https://api.github.com/users/brad-sturt/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-06-10T16:07:13Z","updated_at":"2016-06-10T16:07:13Z","closed_at":null,"body":"Gurobi supports MISOCP in JuMP, but does not support warm starting those models.\r\n\r\nFor example:\r\n\r\n```\r\nmodel = Model(solver=GurobiSolver())\r\n@variable(model, x_[1:10])\r\n@variable(model, y_ >= 0)\r\n@variable(model, z, Bin)\r\n@constraint(model, y_ >= norm2{x_[i], i=1:10})\r\n@objective(model, Min, sum{i*x_[i], i=1:10})\r\n@constraint(model, sum{x_[i], i=1:10} == 5)\r\nsetvalue(z, 1)\r\nstatus = JuMP.solve(model)\r\n```\r\n\r\nThis solves correctly, but also gives\r\n\r\n```\r\nWARNING: Solver does not appear to support providing initial feasible solutions.\r\n```\r\n\r\nIs it correct that Gurobi does not support MISOCP initial values? Where can I check to find out what solvers in which formulations support initial values? Thanks!"}}
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