> Pthread_getspecific and pthread_setspecific are part of the pthread
> library. On Linux you probably need to specify -lpthread along with
> other options passed to gcc and libtool.
> So, um, where/how do I put that in?
make LIBS=-lpthread
___
Help
> Let me put it more directly:
> I replaced glpenv02.c with the version someone posted as being
> thread-safe. ./configure worked fine, but make yielded:
> /bin/bash ../libtool --tag=CC --mode=link gcc -g -O2 -o glpsol
> glpsol.o ../src/libglpk.la -lm -L/usr/include/
> libtool: link: gcc -
Let me put it more directly:
I replaced glpenv02.c with the version someone posted as being thread-safe.
./configure worked fine, but make yielded:
/bin/bash ../libtool --tag=CC --mode=link gcc -g -O2 -o glpsol glpsol.o
../src/libglpk.la -lm -L/usr/include/
libtool: link: gcc -g -O2
> I'm trying to solve shortest path problem using glpsol and mps format. I
> have it working correct with one example but I'm getting wrong results
> with another one and I can't understand if there's something wrong with
> my input or if it's glpsol that gives wrong output.
> My directed graph is
Hi,
I'm trying to solve shortest path problem using glpsol and mps format. I
have it working correct with one example but I'm getting wrong results
with another one and I can't understand if there's something wrong with
my input or if it's glpsol that gives wrong output.
My directed graph is
> OTOH, please excuse my ignorance, but assuming all
> my variables are marked as binary in CPLEX LP file, do I really need to
> call glp_intopt() after glp_simplex() even if glp_get_status(lp) ==
> GLP_OPT assertion holds?
Yes. Glp_simplex solves lp relaxation, i.e. it considers all integer
varia
Hi,
On Thu, 22 Apr 2010, Andrew Makhorin writes:
> Most likely your instance has multiple optima, so your program finds
> one optimal solution while glpsol finds another. As you can see the
> optimal objective value is the same in both cases.
>
> Note that to solve mip you need to call glp_simple
>> I'm having troubles while trying to get the solution variables via C
>> API. Below is the code I use in my program:
>
>> return (int) glp_get_col_prim(lp, i);
>
> Please note that glp_get_col_prim returns a floating-point value, so
> it would be better to write:
>
>return (int) (glp
> is there
> any parallel implementation of GLPK? My other 23 cores are sitting
> idle.]
Currently not.
> I'm having troubles while trying to get the solution variables via C
> API. Below is the code I use in my program:
> return (int) glp_get_col_prim(lp, i);
Please note that glp_get_col
Hi,
[First, thanks Mr. Andrew Makhorin for such a fantastic tool. BTW, if
you would need any relatively huge (~200MB) sample CPLEX LP problems to
benchmark GLPK, I'd be happy to share our archives. Moreover, is there
any parallel implementation of GLPK? My other 23 cores are sitting
idle.]
I'm ha
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