[chem engineer]

hi everyone
I wrote a UDF for the time dependent velocity inlet in a 3D pipe. I can compile it in series mode and there is no problem but when I compile it in parallel mode I face the following error:

Deleted old libudf\ntx86\3ddp_host\libudf.dll
libudf\ntx86\3ddp_node\libudf.dll
The system cannot find the file specified.
(system "copy c:\Fluent.Inc\fluent6.3.26\src\makefile_nt.udf libudf\ntx86\3ddp_host\makefile")
1 file(s) copied.
(chdir "libudf")()
(chdir "ntx86\3ddp_host")()
(system "copy c:\Fluent.Inc\fluent6.3.26\src\makefile_nt.udf libudf\ntx86\3ddp_node\makefile")
1 file(s) copied.
(chdir "libudf")()
(chdir "ntx86\3ddp_node")()

Done.
"c:\Fluent.Inc\ntbin\ntx86"
cells....
Warning: The current working directory d:\lida\t e z\cfd\run\par-udf is not shared!
This may cause file open issues accross network!


Error: open_udf_library: The system cannot find the path specified.

Error Object: #f


asI perceived from other threads I should modify my UDF for parallel mode but I don't know how to do it. I will be thankful if anyone could help me with this problem. my velocity inlet is a step function of time.that is a flow entering a 3D pipe as a fully developed flow before time 10 second and the flow will stop(velocity is zero) after time 10 second. my UDF is as follows:

#include "udf.h"
#include "math.h"
DEFINE_PROFILE(unsteady_velocity_profile, t, i)
{
real current_time;
real x[ND_ND];
real y;
real z;
real a;
real n;
real Umax;
real Umean;
real R;
face_t f;
current_time = CURRENT_TIME;
begin_f_loop(f, t)
{
F_CENTROID(x,f,t);
y=x[1];
z=x[2];
n=7;
R=0.254; /* m */
Umean=10; /* m/s */
Umax=Umean*(((n+1)*(2*n+1))/(2*pow(n,2)));
a=pow((pow(y,2)+pow(z,2)),0.5);
if (current_time < 10)
{
F_PROFILE(f,t,i)=Umax*pow((1-sqrt(pow(z,2)+pow(y,2))/R),(1/n));
}
else
{
F_PROFILE(f,t,i)=0;
}
}
end_f_loop(f, t)
}