OK, I'm really not a hardware-guy: I want to run bwa and here is a snapshot of my /proc/cpuinfo

#grep "physical id" /proc/cpuinfo | sort | uniq | wc -l
4
#grep ^processor /proc/cpuinfo | wc -l
16
#grep 'cpu cores' /proc/cpuinfo | sort | uniq
cpu cores    : 4

what would you suggest as a good value for the number of threads to be used by bwa (option -t ) ?

Thank you ! :-)