STAR Mapping taking too long

[mtiwaridros]

Hi

I am using Star v 2.3.0 for mapping.
I have 6 samples, all paired-end.
The genome generation step went without any problem.
But the mapping is taking too long: it has been running since last evening and is stuck at the following:

May 01 19:21:13 ..... Started STAR run
May 01 19:21:19 ..... Started mapping

The sam file size is increasing, but very incrementally. Similarly for the corresponding logout file.

Any ideas why this might be happening??

Thanks
M

[Brian Bushnell]

Run top and check the CPU utilization; there could be a problem. Also, how many cores are you running it on, how much memory is available, what is the size of the input, and what is the size of the reference? And, of course, what was your command line?