Parallel assign when the output is a vector

[#1]

I am running a simulation where the output of the simulation is a vector, i.e.

F_Simulation=Function({a,b}, 
/* do simulation, resuling in 3 values that are put into a 1x3 matrix named
outvec */
outvec;
);  

I want to do the simulation over a grid of values for the inputs a and b.  It seems like i could get a significant speedup in execution of the simulation study by parallelizing, using Parallel Assign.  Could be done?  Any suggestions on how to do this?  

[#2]

Maybe these give some ideas as they contain examples using Parallel Assign()

• Understanding Parallel Assign 
• Parallel Assign() is slow on certain devices 
• Multithreading troubleshooting using Parallel Assign