cplex

gcc -I/opt/cplex-studio-125/cplex/include -lcplex -L/opt/cplex-studio-125/cplex/lib/x86-64_sles10_4.1/static_pic mipex1.c I'm trying to compile an example from cplex. -I option is fine. The -L option seems to be corrupt, since it can't find the function names. Where is the error? In the specifiec link there is a libcplex.a . /tmp/ccf5sKky.o: In function `main': mipex1.c:(.text+0x9f): undefined reference to `CPXopenCPLEX' mipex1.c:(.text+0xee): undefined reference to `CPXgeterrorstring' mipex1.c:(.text+0x125): undefined reference to `CPXsetintparam' mipex1.c:(.text+0x222): undefined reference

This is a part of the engine-log output that I get from a small-scale mixed integer linear optimization problem that I solved in CPLEX 12.7.0 Nodes Cuts/ Node Left Objective IInf Best Integer Best Bound ItCnt Gap 0 0 280.0338 78 280.0338 72 0 0 428.8558 28 Cuts: 89 137 0 0 429.5221 34 Cuts: 2 142 0 0 429.7745 34 MIRcuts: 2 143 * 0+ 0 460.9166 429.7745 6.76% 0 2 429.7745 34 460.9166 429.8666 143 6.74% Elapsed time = 0.49 sec. (31.07 ticks, tree = 0.01 MB, solutions = 1) * 35 8 integral 0 438.1448 435.6381 211 0.57% Cover cuts applied: 17 Implied bound cuts applied: 10 Flow cuts applied: 11

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am currently using cplex with pyomo from the command line using pyomo -solver=cplex model.py data.dat the results are saved in the file results.json . How can I start cplex again using the previous results as a starting solution? 回答1: If you want to do more advanced things like loading a warmstart it is better to start using Pyomo by writing your own Python scripts. In your case, this might look like: from pyomo.environ import * # import the module that contains your model import model # load the data instance = model.model.create_instance

作为一个不是CS专业的学生，配置就是一项难活。断断续续搞了几天，才搞出来了（一想到最后的苦战是因为没有加引号，就想哭） 首先我们已经在IDEA上创建好一个Project了,马上开始CPLEX的配置。 第一步：加入cplex.jar 找到cplex.jar所在目录：D:\Program Files\IBM\ILOG\CPLEX_Studio127\cplex\lib （我的） File -> Project Structure -> Modules -> 新建一个与project同名的module -> add cplex.jar　　 第二步： 配置 -Djava.library.path 找到cplex1270. dll 所在目录 （我的cplex版本是12.7) Run -> Run Configurations -> VM options: -Djava.library.path="D:\Program Files\IBM\ILOG\CPLEX_Studio127\cplex\bin\x64_win64" （注意有引号） 然后，Run 就成功啦

I am trying to find small-working-example about CPLEX with functions. Bad example here how not do things. How are functions defined in CPLEX? P.s. I am doing already submitted work for the linear-optimization -course 2.3140 here , in Aalto University. hhh You write it like a mathematical problem, you had an error with index-out-of-bound. // Decision variables dvar float+ z[0..4]; dvar float a[0..4]; dvar float+ x[0..5]; dvar float+ v[0..5]; minimize sum(myZ in 0..4) z[myZ]; subject to { startX: x[0]==0; startV: v[0]==0; endX: x[4]==1; x[5]==1; endV: v[4]==0; v[5]==0; forall(t in 0..4){ a[t]<=z