Hello Thank you for the quick response. The client and server machine are the same. I checked about the disk performance. Yes, you are right, the disk write speed is very slow. That's why they are taking very long time to submit the job. I will have to replace the disk i guess. Thank you Suchit Kumar

You may want to make sure that the endpoints of your source are precisely the corner points of your bowtie. Two neighboring points may appear as one in the GUI, but may be different in the lower decimals. In such a case, you will get a very small mesh step. An alternative to remedy this is to use a source that is aligned with the grid and modify the tips of the patches of the rotated bowtie such that they touch the tips of the source. Close to the feed, this should not matter a lot. You can check this by comparing the feedpoint impedance and the near-field to those of your original simulation.