I have integrated the simpleFoam solver of OpenFOAM-2.4.0 with paralution_PCG. The solver is compiled successfully. But, when I execute a test case using that compiled solver, I get the increase in execution time as compared with the execution time required to execute a test case using simpleFoam solver (without using paralution_PCG). I have taken grid size of 40*40*40 and executed the test case for different number of gpu cores like 4, 8, 16, 32, 64. Even, I have tried by increasing the grid size to 80*80*80, the same result is there. As paralution library is used to accelerate the performance of the solver, but in my case it is not like that..
How can I increase the performance of simpleFoam integrated with paralution_PCG.. any idea??