Do you know if there is any way to install CPLEX on Julia 1.4.2 32 bit? I know I need one of the latest versions of CPLEX in 32 bit. I tried to install CPLEX 12.6.3 32bit but it gave me a lot of problems and I didn’t get anything.
I tried to install CPLEX 12.6.3
You need CPLEX 12.9 or 12.10.
The wider issue is that I’m not sure if this is tested. You will need CPLEX 32-bit and Julia 32-bit. There may be a range of bugs that you will need to fix.
A post of the errors you are seeing would be helpful.
Why the need for 32bit?
I want to establish a communication between a simulator and Julia. Julia has to call CPLEX, the problem is that the simulator is 32 bits and I have an error if Julia is 64.
This is the error:
Building CPLEX → `C:\Users\Usuario\.julia\packages\CPLEX\Hxpuk\deps\build.log`
┌ Error: Error building `CPLEX`:
│ ERROR: LoadError: Unable to locate CPLEX installation. Note this must be downloaded separately. See the CPLEX.jl README for further instructions.
│ Stacktrace:
│ [1] error(::String) at .\error.jl:33
│ [2] try_local_installation() at C:\Users\Usuario\.julia\packages\CPLEX\Hxpuk\deps\build.jl:64
│ [3] top-level scope at C:\Users\Usuario\.julia\packages\CPLEX\Hxpuk\deps\build.jl:80
│ [4] include(::String) at .\client.jl:439
│ [5] top-level scope at none:5
│ in expression starting at C:\Users\Usuario\.julia\packages\CPLEX\Hxpuk\deps\build.jl:77
└ @ Pkg.Operations D:\buildbot\worker\package_win32\build\usr\share\julia\stdlib\v1.4\Pkg\src\Operations.jl:899
This is my CPLEX.jl:
__precompile__()
module CPLEX
using Libdl
@static if Sys.isapple()
Libdl.dlopen("libstdc++",Libdl.RTLD_GLOBAL)
end
if isfile(joinpath(dirname(@__FILE__),"..","deps","deps.jl"))
include("../deps/deps.jl")
else
error("CPLEX not properly installed. Please run Pkg.build(\"CPLEX\")")
end
### imports
import Base: convert, unsafe_convert, show, copy
# Standard LP interface
using MathProgBase.SolverInterface
# exported functions
# export is_valid,
# set_logfile,
# get_error_msg,
# read_model,
# write_model,
# get_sense,
# set_sense!,
# get_obj,
# set_obj!,
# set_warm_start!,
# free_problem,
# close_CPLEX,
# get_param_type,
# set_param!,
# get_param,
# add_vars!,
# add_var!,
# get_varLB,
# set_varLB!,
# get_varUB,
# set_varUB!,
# set_vartype!,
# get_vartype,
# num_var,
# add_constrs!,
# add_constrs_t!,
# add_rangeconstrs!,
# add_rangeconstrs_t!,
# num_constr,
# get_constr_senses,
# set_constr_senses!,
# get_rhs,
# set_rhs!,
# get_constrLB,
# get_constrUB,
# set_constrLB!,
# set_constrUB!,
# get_nnz,
# get_constr_matrix,
# set_sos!,
# add_qpterms!,
# add_diag_qpterms!,
# add_qconstr!,
# optimize!,
# get_objval,
# get_solution,
# get_reduced_costs,
# get_constr_duals,
# get_constr_solution,
# get_infeasibility_ray,
# get_unbounded_ray,
# get_status,
# get_status_code,
# setcallbackcut,
# cbcut,
# cblazy,
# cbget_mipnode_rel,
# cbget_mipsol_sol,
# cplex_model
using SparseArrays
using LinearAlgebra
include("cpx_common.jl")
include("cpx_env.jl")
v = version()
if startswith(v,"12.8")
include("full_defines_1280.jl")
include("cpx_params_1280.jl")
elseif startswith(v,"12.9")
include("full_defines_1290.jl")
include("cpx_params_1290.jl")
elseif startswith(v, "12.10")
include("full_defines_12100.jl")
include("cpx_params_12100.jl")
else
error("Unsupported CPLEX version $v. Only 12.8, 12.9, and 12.10 are currently supported.")
end
include("cpx_model.jl")
include("cpx_params.jl")
include("cpx_vars.jl")
include("cpx_constrs.jl")
include("cpx_quad.jl")
include("cpx_solve.jl")
include("cpx_callbacks.jl")
include("cpx_highlevel.jl")
include("cpx_generic_callbacks.jl")
include("CplexSolverInterface.jl")
include("MOI/MOI_wrapper.jl")
end
Did you follow the instructions in the README?