From subsecret
Since there is no official 64bit Rasbian distribution for the Raspberry Pi 3, there has been a lot of discussion if a 64bit version would actually give any performance benefit.
I try to answer the question by performing BWA-0.6.2 on various kernels and distributions.
I have added a heatsink and fan to the RPI3, to allow for non-throttled performance.
Debian bootstrap is used for building and testing
debootstrap --no-check-gpg --variant=buildd --arch=armhf unstable arm32-sbuild http://ftp.debian.org/debian debootstrap --no-check-gpg --variant=buildd --arch=arm64 unstable arm64-sbuild http://ftp.debian.org/debian
pi64: https://github.com/bamarni/pi64
openSUSE: http://download.opensuse.org/ports/aarch64/tumbleweed/images/openSUSE-Tumbleweed-ARM-XFCE-raspberrypi3.aarch64-Current.raw.xz
| Dist | Kernel | Kernel-arch | GCC | 32bit | 64bit |
|---|---|---|---|---|---|
| Raspbian | stock | 32bit | N/A | ||
| Raspbian | self-compiled | 32bit | |||
| Raspbian | self-compiled | 64bit | |||
| openSUSE | stock | 64bit | |||
| pi64 | stock | 64bit |
