SAC1
This is a repository where you can download binary distributions of the SAC/BRIS (also known as Mac SAC) for computers running MacOS. If you are not running MacOS, you need to compile SAC yourself by installing it from source. An automated script to do this can be found here; this is a shell script that downloads, patches and compiles the source code based on educated guesses about your system.
SAC/BRIS is based on the 10.6d source code, updated to equivalent functionality as 10.6f, and extended from there. It is compatible with IRIS's SAC (except for any bugs) but does not contain IRIS's recent extensions to query metadata via SAC and download data. (These features will be added in a future release.) SAC/BRIS is documented in the book, The Seismic Analysis Code (Cambridge University Press).
Downloads are in the form of a MacOS disk image (folder) that you can mount
and look inside of. Generally, you will find an MacOS package to install and
a separate uninstall app. The pkgutil --pkgs command on MacOS will list the
packages that you have installed. For packaging purposes, SAC is called
uk.ac.bris.gly.sac. The uninstall app will uninstall SAC and, optionally,
erase all knowledge of having ever
had it installed. After you install, you can close and throw away the disk
image. You can save and cherish it, or download it again later to get the
uninstall app if you decide to get rid of SAC.
If your Mac won't let you install from unknown .dmg (disk image) files,
temporarily turn off enforcement of this rule from the command line:
sudo spctl --master-disable
which will allow you to see and check "Anywhere" from the
System Preferences -> Security & Privacy "General" menu.
After installing, you might want to revert to the original protection level
by re-enabling checks: sudo spctl --master-enable
MacOS has evolved through the years through different releases (Panther,
Tiger, Leopard, ..., Big Sur, Monterey) and on different hardware
(Motorola, PowerPC 32 and 64 bit, Intel 32 and 64 bit, and Apple (ARM)).
Your download choice depends on the OS release and hardware you're running
on, which, if you're unfamiliar with the details, you can get from the
About this Mac Apple menu item, and from the uname -a command.
There are also some features that you might or might not want. The main choice you have is whether you prefer to use X graphics or native Mac graphics. If you want to have an pure Mac system, you can opt out of needing to install X and download the no X variant.
SAC implicitly has parallel processing built into it. For example, if you want to filter data, then the filtering command acts on all traces in SAC memory simultaneously. Internally, SAC will take advantage of any multiple CPUs on your machine to handle the processing for each trace, speeding up the processing. If you don't want to have SAC monopolize all the processing power of your system, don't download a version marked parallel.
Not all choices are available for all OS/hardware combinations. If you crave one, we can build one to suit provided we have a system with that OS/hardware combination. Otherwise, build it yourself from source.
Information about all of the releases may be found here.
| SAC/BRIS Release | 11.6 | 10.9-10.6 | 10.5-10.4 |
|---|---|---|---|
| grh-116 | M1 X+mac | Intel X+mac | |
| grh-115 | Intel X+mac | ||
| grh-114 | Intel X+mac | ||
| grh-113 | Intel X+mac | ||
| grh-112 | Intel X+mac | ||
| grh-111 | Intel X+mac | ||
| grh-110 | Intel X+mac parallel Intel X+mac | Intel X+mac PPC X+mac |
- M1 - Apple silicon (ARM 64 bit) hardware.
- Intel - Intel hardware.
- PPC - PowerPC hardware.
- X+mac - Support for both X11 graphics and native Mac graphics.
- mac - Support for native Mac graphics ONLY. This means that you do NOT have to have X11 installed on your Mac in order to run SAC.
- X - Support for X11 graphics only.
- parallel - Support for parallel trace operations with OpenMP; sequential operations on traces, otherwise. OpenMP support provided within the SAC libraries and neither gfortran nor OpenMP need be installed on your computer -- at least that's the idea, so if OpenMP features don't work, report it as a bug!
Footnotes
-
Revision 14 ↩